Qashqai J11. Engine control system (MR20DD) — part 23
ECM-354
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2118 THROTTLE CONTROL MOTOR
5.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning part.
2.
CHECK THROTTLE CONTROL MOTOR
Check the throttle control motor. Refer to
ECM-354, "Component Inspection"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-149, "Removal and Installation"
Component Inspection
INFOID:0000000010703044
1.
CHECK THROTTLE CONTROL MOTOR
1.
Turn ignition switch OFF.
2.
Disconnect electric throttle control actuator harness connector.
3.
Check the resistance between electric throttle control actuator terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-149, "Removal and Installation"
.
+
−
Continuity
Electric throttle control actu-
ator
ECM
Connector
Terminal
Connector
Terminal
F45
5
F16
69
Not existed
73
Existed
6
69
Existed
73
Not existed
Electric throttle control actuator
Resistance
(Approx.)
+
−
Terminal
5
6
1 - 15
Ω
[at 25
°
C (77
°
F)]
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
ECM-355
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
DTC Description
INFOID:0000000010703045
DTC DETECTION LOGIC
POSSIBLE CAUSE
Electric throttle control actuator
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B
1.
Turn ignition switch ON and wait at least 1 second.
2.
Set selector lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.
3.
Set selector lever to P (CVT) or Neutral (M/T) position.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Turn ignition switch ON and wait at least 1 second.
6.
Set selector lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.
7.
Set selector lever to P (CVT) or Neutral (M/T) position.
8.
Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
9.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-356, "Diagnosis Procedure"
.
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2119
ETC ACTR-B1
(Throttle actuator control throttle
body range/performance)
A
Electric throttle control actuator does not function properly due to the return
spring malfunction.
B
Throttle valve opening angle in fail-safe mode is not in specified range.
C
ECM detects the throttle valve is stuck open.
Engine operating condition in fail-safe mode
Fail safe mode
Vehicle behavior
Traveling con-
trol mode
Accelerator an-
gle variation
control
ECM controls the accelerator pedal depression speed to make it slower than actual speed. This
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.
Engine output
control
ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle
speed to encourage the driver to repair malfunction.
Others
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed
opening (approx. 5 degrees) by the return spring.
NOTE:
For pattern A and B refer to A and B of P2119 DTC detection logic.
For C of P2119 DTC detection logic ECM behaves as above.
ECM-356
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Turn ignition switch ON and wait at least 1 second.
2.
Set selector lever to D (CVT) or 1st (M/T) position and wait at least 3 seconds.
3.
Set selector lever to P (CVT) or Neutral (M/T) position.
4.
Start engine and let it idle for 3 seconds.
5.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-356, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010703046
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Turn ignition switch OFF.
2.
Remove the intake air duct. Refer to
EM-147, "Removal and Installation"
.
3.
Check if foreign matter is caught between the throttle valve and the housing.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Remove the foreign matter and clean the electric throttle control actuator inside, then perform
throttle valve closed position learning. Refer to
.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
Replace electric throttle control actuator. Refer to
EM-149, "Removal and Installation"
>> INSPECTION END
P2122, P2123 APP SENSOR
ECM-357
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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P2122, P2123 APP SENSOR
DTC Description
INFOID:0000000010703047
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (APP sensor 1 circuit is open or shorted.)
• Accelerator pedal position sensor (APP sensor 1)
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-358, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2122
APP SEN 1/CIRC
(Throttle/pedal position sensor/switch “D”
circuit low)
An excessively low voltage from the APP sensor 1 is sent to ECM.
P2123
APP SEN 1/CIRC
(Throttle/pedal position sensor/switch “D”
circuit high)
An excessively high voltage from the APP sensor 1 is sent to ECM.
Engine operating condition in fail-safe mode
Fail safe mode
Vehicle behavior
Others
The ECM controls the electric throttle control actuator in regulating the throttle opening in order
for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
Therefore, the acceleration will be poor.
NOTE:
If accelerator pedal position sensor 1 and 2 malfunction at the same time conducts following con-
trol.
• ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed
opening (approx. 5 degrees) by the return spring.
ECM-358
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2122, P2123 APP SENSOR
Diagnosis Procedure
INFOID:0000000010703048
1.
CHECK DTC PRIORITY
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT-1
1.
Turn ignition switch OFF.
2.
Disconnect accelerator pedal position (APP) sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT-2
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace malfunctioning part.
4.
CHECK APP SENSOR 1 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
4.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK APP SENSOR INPUT SIGNAL CIRCUIT
1.
Check the continuity between APP sensor harness connector and ECM harness connector.
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E20
4
Ground
5 V
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
4
E57
122
Existed
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
2
E57
127
Existed
P2122, P2123 APP SENSOR
ECM-359
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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2.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
6.
CHECK APP SENSOR
Check the APP sensor. Refer to
ECM-359, "Component Inspection"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
Component Inspection
INFOID:0000000010703049
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Turn ignition switch ON.
4.
Check the voltage between ECM harness connector terminals as per the following condition.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
3
E57
126
Existed
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
126
127
Accelerator pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
119
120
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
ECM-360
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2127, P2128 APP SENSOR
P2127, P2128 APP SENSOR
DTC Description
INFOID:0000000010703050
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors
- APP sensor 2 circuit is open or shorted.
- Sensor power supply 2 circuit is shorted.
• Accelerator pedal position sensor (APP sensor 2)
• Sensor power supply 2 circuit
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-361, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2127
APP SEN 2/CIRC
(Throttle/pedal position sensor/switch “E”
circuit low)
An excessively low voltage from the APP sensor 2 is sent to ECM.
P2128
APP SEN 2/CIRC
(Throttle/pedal position sensor/switch “E”
circuit high)
An excessively high voltage from the APP sensor 2 is sent to ECM.
Engine operating condition in fail-safe mode
Fail safe mode
Vehicle behavior
Others
The ECM controls the electric throttle control actuator in regulating the throttle opening in order
for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
Therefore, the acceleration will be poor.
NOTE:
If accelerator pedal position sensor 1 and 2 malfunction at the same time conducts following con-
trol.
• ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed
opening (approx. 5 degrees) by the return spring.
P2127, P2128 APP SENSOR
ECM-361
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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Diagnosis Procedure
INFOID:0000000010703051
1.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-1
1.
Turn ignition switch OFF.
2.
Disconnect accelerator pedal position (APP) sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 2.
2.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-2
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 3.
3.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-3
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Perform
ECM-392, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace malfunctioning part.
5.
CHECK APP SENSOR 2 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
APP sensor
Voltage
(Approx.)
Connector
+
−
Terminal
E20
5
1
5 V
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E20
5
Ground
5 V
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
5
E57
118
Existed
ECM-362
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2127, P2128 APP SENSOR
4.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
6.
CHECK ECM GROUND CIRCUIT
Check the continuity between ECM harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace malfunctioning part.
7.
CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT
1.
Check the continuity between APP sensor harness connector and ECM harness connector.
2.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace malfunctioning part.
8.
CHECK APP SENSOR
Check the APP sensor. Refer to
ECM-362, "Component Inspection"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
Component Inspection
INFOID:0000000010703052
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Turn ignition switch ON.
4.
Check the voltage between ECM harness connector terminals as per the following condition.
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
1
E57
120
Existed
+
−
Continuity
ECM
Connector
Terminal
F15
11
Ground
Existed
E57
123
125
128
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
6
E57
119
Existed
P2127, P2128 APP SENSOR
ECM-363
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
126
127
Accelerator pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
119
120
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
ECM-364
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2135 TP SENSOR
P2135 TP SENSOR
DTC Description
INFOID:0000000010703053
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector (TP sensor 1 or 2 circuit is open or shorted.)
• Electric throttle control actuator (TP sensor 1 or 2)
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-364, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010703054
1.
CHECK DTC PRIORITY
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2135
TP SENSOR-B1
(Throttle/pedal position sensor/switch “A”/
“B” voltage correlation)
Rationally incorrect voltage is sent to ECM compared with the signals from
TP sensor 1 and TP sensor 2.
Engine operating condition in fail-safe mode
Fail safe mode
Vehicle behavior
Others
• The ECM controls the electric throttle control actuator in regulating the throttle opening in order
for the idle position to be within +10 degrees.
• The ECM regulates the opening speed of the throttle valve to be slower than the normal con-
dition. So, the acceleration will be poor.
NOTE:
If throttle position sensor1 and 2 malfunction at the same time conducts following control.
• ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed
opening (approx. 5 degrees) by the return spring.
P2135 TP SENSOR
ECM-365
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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If DTC P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
CHECK THROTTLE POSITION SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect electric throttle control actuator harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between electric throttle control actuator harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
4.
Also check harness for short to ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for power supply circuit.
NO
>> Repair or replace malfunctioning part.
4.
CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT
1.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
+
−
Voltage
(Approx.)
Electric throttle control actuator
Connector
Terminal
F45
2
Ground
5 V
+
−
Continuity
Electric throttle control actu-
ator
ECM
Connector
Terminal
Connector
Terminal
F45
2
F16
60
Existed
+
−
Continuity
Electric throttle control actu-
ator
ECM
Connector
Terminal
Connector
Terminal
F45
4
F16
75
Existed
ECM-366
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2135 TP SENSOR
2.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
6.
CHECK THROTTLE POSITION SENSOR
Check the throttle position sensor. Refer to
ECM-366, "Component Inspection"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-149, "Removal and Installation"
.
Component Inspection
INFOID:0000000010703055
1.
CHECK THROTTLE POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Perform “Throttle Valve Closed Position Learning”. Refer to
4.
Turn ignition switch ON.
5.
Set selector lever to D (CVT) or 1st (M/T) position.
6.
Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace electric throttle control actuator. Refer to
EM-149, "Removal and Installation"
.
+
−
Continuity
Electric throttle control actu-
ator
ECM
Connector
Terminal
Connector
Terminal
F45
1
F16
63
Existed
3
71
ECM
Condition
Voltage
Connector
+
–
Terminal
F16
63
75
Accelerator pedal
Fully re-
leased
More than 0.36 V
Fully de-
pressed
Less than 4.75 V
71
Fully re-
leased
Less than 4.75 V
Fully de-
pressed
More than 0.36 V
P2138 APP SENSOR
ECM-367
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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P2138 APP SENSOR
DTC Description
INFOID:0000000010703056
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector
- APP sensor 1 or 2 circuit is open or shorted.
- Sensor power supply 2 circuit is shorted.
• Accelerator pedal position sensor (APP sensor 1 or 2)
• Sensor power supply 2 circuit
FAIL-SAFE
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-368, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P2138
APP SENSOR
(Throttle/pedal position sensor/switch “D”/
“E” voltage correlation)
Rationally incorrect voltage is sent to ECM compared with the signals from
APP sensor 1 and APP sensor 2.
Engine operating condition in fail-safe mode
Fail safe mode
Vehicle behavior
Others
The ECM controls the electric throttle control actuator in regulating the throttle opening in order
for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
Therefore, the acceleration will be poor.
NOTE:
If accelerator pedal position sensor 1 and 2 malfunction at the same time conducts following con-
trol.
• ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed
opening (approx. 5 degrees) by the return spring.
ECM-368
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P2138 APP SENSOR
Diagnosis Procedure
INFOID:0000000010703057
1.
CHECK DTC PRIORITY
If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
CHECK APP SENSOR 1 POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect accelerator pedal position (APP) sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace malfunctioning part.
4.
CHECK APP SENSOR 2 POWER SUPPLY-1
1.
Turn ignition switch OFF.
2.
Disconnect APP sensor harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> GO TO 5.
5.
CHECK APP SENSOR 2 POWER SUPPLY-2
Check the voltage between APP sensor harness connector and ground.
APP sensor
Voltage
(Approx.)
Connector
+
−
Terminal
E20
4
2
5 V
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E20
4
Ground
5 V
APP sensor
Voltage
(Approx.)
Connector
+
−
Terminal
E20
5
1
5 V
P2138 APP SENSOR
ECM-369
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
ECM
N
P
O
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 6.
6.
CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace malfunctioning part.
7.
CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Perform
ECM-392, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace malfunctioning part.
8.
CHECK APP SENSOR 1 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace malfunctioning part.
9.
CHECK APP SENSOR 2 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between APP sensor harness connector and ECM harness connector.
4.
Also check harness for short to power.
+
−
Voltage
(Approx.)
APP sensor
Connector
Terminal
E20
5
Ground
5 V
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
5
E57
118
Existed
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
2
E57
127
Existed
+
−
Continuity
APP sensor
ECM
Connector
Terminal
Connector
Terminal
E20
1
E57
120
Existed
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