Qashqai J11. Engine control system (MR20DD) — part 21
ECM-322
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1217 ENGINE OVER TEMPERATURE
Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
NOTE:
Use component function check to check the overall function of the
cooling fan. During this check, a DTC might not be confirmed.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES
>> Proceed to
ECM-322, "Diagnosis Procedure"
.
NO
>> GO TO 3.
3.
PERFORM COMPONENT FUNCTION CHECK-2
Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES
>> Proceed to
ECM-322, "Diagnosis Procedure"
.
NO
>> GO TO 4.
4.
PERFORM COMPONENT FUNCTION CHECK-3
With CONSULT
1.
Turn ignition switch ON.
2.
Select “FAN DUTY CONTROL” in “ACTIVE TEST” mode of “ENGINE” using CONSULT. Refer to
3.
Check that cooling fan speed varies according to the percentage.
Is the inspection result normal?
YES-1 >> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
.
YES-2 >> Confirmation after repair: INSPECTION END
NO
>> Proceed to
ECM-322, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010703013
1.
CHECK DTC PRIORITY
If DTC P1217 is displayed with DTC UXXXX or P0607, first perform the trouble diagnosis for DTC UXXXX or
P0607.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
CHECK COOLING FAN OPERATION
With CONSULT
1.
Turn ignition switch ON.
2.
Select “FAN DUTY CONTROL” in “ACTIVE TEST” mode of “ENGINE” using CONSULT. Refer to
3.
Check that cooling fan speed varies according to the percentage.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Proceed to
ECM-396, "Diagnosis Procedure"
.
3.
CHECK COOLING SYSTEM FOR LEAK-1
Check cooling system for leak. (Refer to
Is leakage detected?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK COOLING SYSTEM FOR LEAK-2
Check the following for leak.
• Hose
• Radiator
SEF621W
P1217 ENGINE OVER TEMPERATURE
ECM-323
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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• Water pump
>> Repair or replace malfunctioning part.
5.
CHECK RADIATOR CAP
Check radiator cap. (Refer to
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace radiator cap. Refer to
6.
CHECK THERMOSTAT
Check thermostat. (Refer to
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace thermostat. Refer to
CO-51, "Removal and Installation"
7.
CHECK WATER CONTROL VALVE
Check water control valve. (Refer to
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace water control valve. Refer to
CO-53, "Removal and Installation"
8.
CHECK ENGINE COOLANT TEMPERATURE SENSOR
Check engine coolant temperature sensor. (Refer to
ECM-187, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Replace engine coolant temperature sensor. Refer to
.
9.
OVERHEATING CAUSE ANALYSIS
If the cause cannot be isolated, check the
CO-36, "Troubleshooting Chart"
.
>> INSPECTION END
ECM-324
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1225 TP SENSOR
P1225 TP SENSOR
DTC Description
INFOID:0000000010703014
DTC DETECTION LOGIC
POSSIBLE CAUSE
Electric throttle control actuator (TP sensor 1 and 2)
FAIL-SAFE
Not applicable
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 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
ECM-324, "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:0000000010703015
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
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1225
CTP LEARNING-B1
(Closed throttle position learning bank 1)
Closed throttle position learning value is excessively low.
P1226 TP SENSOR
ECM-325
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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P1226 TP SENSOR
DTC Description
INFOID:0000000010703016
DTC DETECTION LOGIC
POSSIBLE CAUSE
Electric throttle control actuator (TP sensor 1 and 2)
FAIL-SAFE
Not applicable
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 10 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Repeat steps 2 and 3 for 32 times.
5.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
ECM-325, "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:0000000010703017
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
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1226
CTP LEARNING-B1
(Closed throttle position learning bank 1)
Closed throttle position learning is not performed successfully, repeatedly.
ECM-326
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P155D GENERATOR
P155D GENERATOR
DTC Description
INFOID:0000000010703018
DTC DETECTION LOGIC
POSSIBLE CAUSE
Generator
FAIL-SAFE
Not applicable
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
1.
Start the engine and let it idle at least 10 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-326, "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:0000000010703019
1.
CHECK CHARGING SYSTEM
Perform trouble diagnosis for charging system. Refer to
ECM-145, "Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> Replace generator. Refer to
CHG-52, "MR20DD : Exploded View"
.
NO
>> Repair or replace error-detected parts.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P155D
GENERATOR
• ECM receives mechanical malfunction signal sent from generator.
• ECM receives electrical malfunction signal sent from generator.
P1564 ASCD STEERING SWITCH
ECM-327
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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P1564 ASCD STEERING SWITCH
DTC Description
INFOID:0000000010703020
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connectors (ASCD steering switch circuit is open or shorted.)
• ASCD steering switch
• ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
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.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 10 seconds.
2.
Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3.
Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4.
Press ACCEL/RES switch for at least 10 seconds, then release it and wait at least 10 seconds.
5.
Press COAST/SET switch for at least 10 seconds, then release it and wait at least 10 seconds.
6.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-327, "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:0000000010703021
1.
CHECK DTC PRIORITY
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
.
NO
>> GO TO 2.
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1564
ASCD SW
(ASCD switch)
ECM detects that input signal from the ASCD steering switch is out of the
specified range.
ECM-328
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1564 ASCD STEERING SWITCH
1.
Turn ignition switch ON.
2.
Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode of
“ENGINE” using CONSULT.
3.
Check each item indication as per the following conditions.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 3.
3.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect combination switch (spiral cable) harness connector.
4.
Check the continuity between combination switch (spiral cable) and ECM harness connector.
5.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT
1.
Check the continuity between ECM harness connector and combination switch.
Monitor item
Condition
Indication
MAIN SW
MAIN switch
Pressed
ON
Released
OFF
CANCEL SW
CANCEL switch
Pressed
ON
Released
OFF
RESUME/ACC SW
ACCEL/RES switch
Pressed
ON
Released
OFF
SET SW
COAST/SET switch
Pressed
ON
Released
OFF
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
110
111
MAIN switch: Pressed
0 V
CANCEL switch: Pressed
1.0 V
COAST/SET switch: Pressed
2.0 V
ACCEL/RES switch: Pressed
3.0 V
All ASCD steering switches: Released
4.0 V
+
–
Continuity
Combination switch
(Spiral cable)
ECM
Connector
Terminal
Connector
Terminal
M66
28
E57
111
Existed
P1564 ASCD STEERING SWITCH
ECM-329
< 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 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK ASCD STEERING SWITCH
Check ASCD steering switch. Refer to
ECM-329, "Component Inspection"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace ASCD steering switch. Refer to
ST-8, "Removal and Installation"
Component Inspection
INFOID:0000000010703022
1.
CHECK ASCD STEERING SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect combination switch (spiral cable) harness connector.
3.
Check the resistance between combination switch harness connector terminals as per the following condi-
tions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace ASCD steering switch. Refer to
ST-8, "Removal and Installation"
+
–
Continuity
Combination switch
(Spiral cable)
ECM
Connector
Terminal
Connector
Terminal
M66
27
E57
110
Existed
Combination switch
(Spiral cable)
Condition
Resistance
(Approx.)
Connector
+
−
Terminal
M303
8
9
MAIN switch: Pressed
0
Ω
CANCEL switch: Pressed
250
Ω
COAST/SET switch: Pressed
660
Ω
ACCEL/RES switch: Pressed
1,480
Ω
All ASCD steering switches: Released
4,000
Ω
ECM-330
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1568 SIGNAL INVALID
P1568 SIGNAL INVALID
DTC Description
INFOID:0000000010703023
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Chassis control module
• ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P1568 is displayed with DTC UXXXX, first perform the confirmation procedure for DTC UXXXX.
Is applicable DTC detected?
YES
>> Perform diagnosis for detected DTC. 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.
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 5 seconds.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-330, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010703024
1.
CHECK DTC PRIORITY
If DTC P1568 is displayed with DTC UXXXX, first perform the confirmation procedure for DTC UXXXX.
Is applicable DTC detected?
YES
>> Perform diagnosis for detected DTC. Refer to
.
NO
>> GO TO 2.
2.
CHECK SELF-DIAGNOSTIC RESULT OF CHASSIS CONTROL MODULE
Check that the chassis control module does not detect any DTC.
Is any DTC detected?
YES
>> GO TO 3.
NO
>> Replace chassis control module. Refer to
DAS-312, "Removal and Installation"
.
3.
REPLACE CHASSIS CONTROL MODULE
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1568
ICC COMMAND VALUE
(Intelligent cruise control command value)
ECM detects that a throttle valve opening angle request signal sent from
chassis control module is difference from the specified value calculated by
ECM.
P1568 SIGNAL INVALID
ECM-331
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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1.
Replace chassis control module. Refer to
DAS-312, "Removal and Installation"
2.
Perform DTC Confirmation Procedure again.
Is DTC P1568 detected again?
YES
>> Replace ECM. Refer to
ECM-416, "Removal and Installation"
NO
>> INSPECTION END
ECM-332
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1572 BRAKE PEDAL POSITION SWITCH
P1572 BRAKE PEDAL POSITION SWITCH
DTC Description
INFOID:0000000010703025
DTC DETECTION LOGIC
NOTE:
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not stored in ECM
memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed. 1st trip DTC is erased
when ignition switch OFF. And even when malfunction A is detected in two consecutive trips, DTC is not
stored in ECM memory.
POSSIBLE CAUSE
• Harness or connectors
- Stop lamp switch circuit is shorted.
- Brake pedal position switch circuit is shorted.
• Stop lamp switch
• Brake pedal position switch
• Incorrect stop lamp switch installation
• Incorrect brake pedal position switch installation
• ECM
FAIL-SAFE
Not applicable
DTC CONFIRMATION PROCEDURE
1.
CHECK DTC PRIORITY
If DTC P1572 is displayed with DTC P0605, perform the trouble diagnosis for DTC P0605.
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.
NOTE:
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for mal-
function B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
Will CONSULT be used?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1.
Start engine.
2.
Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
3.
Press MAIN switch and make sure that CRUISE indicator is displayed in combination meter.
4.
Drive the vehicle for at least 5 consecutive seconds as per the following conditions.
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
P1572
ASCD BRAKE SW
(ASCD brake switch)
A
When the vehicle speed is above 30 km/h (19 MPH), ON signals from the
stop lamp switch and the brake pedal position switch are sent to the ECM
at the same time.
B
Brake pedal position switch signal is not sent to ECM for extremely long
time while the vehicle is driving.
P1572 BRAKE PEDAL POSITION SWITCH
ECM-333
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
5.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
NO
>> GO TO 4.
4.
PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1.
Drive the vehicle and maintain the following condition for at least 5 seconds.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
2.
Check DTC.
Is DTC detected?
YES
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
NO-1
>> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
5.
PERFORM COMPONENT FUNCTION CHECK
Without CONSULT
NOTE:
Use component function check to check the overall function of brake pedal position switch and stop lamp
switch circuit. During this check, a DTC might not be confirmed.
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following conditions.
Is the inspection result normal?
YES-1 >> To check malfunction symptom before repair: Refer to
GI-41, "Intermittent Incident"
YES-2 >> Confirmation after repair: INSPECTION END
Vehicle speed
More than 30 km/h (19 mph)
Selector lever
Except P or N position (CVT)
Except neutral position (M/T)
Vehicle speed
More than 30 km/h (19 mph)
Selector lever
Except P or N position (CVT)
Except neutral position (M/T)
Driving condition
Depress the brake pedal for more
than five seconds so as not to come
off from the above-mentioned vehicle
speed.
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
115
128
Brake pedal
Slightly depressed
Battery voltage
Fully released
0 V
116
Slightly depressed
0 V
Fully released
Battery voltage
ECM-334
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1572 BRAKE PEDAL POSITION SWITCH
NO
>> Proceed to
ECM-334, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000010703026
1.
CHECK DTC PRIORITY
If DTC P1572 is displayed with DTC P0605, perform the trouble diagnosis for DTC P0605.
Is applicable DTC detected?
YES
>> Perform diagnosis of applicable. Refer to
NO
>> GO TO 2.
2.
CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT
With CONSULT
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode of “ENGINE” using CONSULT.
3.
Check “BRAKE SW1” indication as per the following conditions.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT
1.
Select “BRAKE SW2” in “DATA MONITOR” mode of “ENGINE” using CONSULT.
2.
Check “BRAKE SW2” indication as per the following conditions.
Without CONSULT
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following.
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal
Slightly de-
pressed
OFF
Fully re-
leased
ON
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
116
128
Brake pedal
Slightly de-
pressed
0 V
Fully released
Battery voltage
Monitor item
Condition
Indication
BRAKE SW2
Brake pedal
Slightly de-
pressed
ON
Fully re-
leased
OFF
P1572 BRAKE PEDAL POSITION SWITCH
ECM-335
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 7.
4.
CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect brake pedal position switch harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between brake pedal position switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Perform the trouble diagnosis for power supply circuit.
5.
CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between brake pedal position switch harness connector and ECM harness connec-
tor.
3.
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 BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. Refer to
ECM-336, "Component Inspection (Brake Pedal Position
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace brake pedal position switch. Refer to
BR-17, "Removal and Installation"
(LHD) or
(RHD).
7.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the voltage between stop lamp switch harness connector and ground.
ECM
Condition
Voltage
(Approx.)
Connector
+
–
Terminal
E57
115
128
Brake pedal
Slightly de-
pressed
Battery voltage
Fully released
0 V
+
−
Voltage
Brake pedal position switch
Connector
Terminal
E30
1
Ground
Battery voltage
+
−
Continuity
Brake pedal position switch
ECM
Connector
Terminal
Connector
Terminal
E30
2
E57
116
Existed
ECM-336
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
P1572 BRAKE PEDAL POSITION SWITCH
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Perform the trouble diagnosis for power supply circuit.
8.
CHECK STOP LAMP SWITCH SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between stop lamp switch harness connector and ECM harness connector.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace malfunctioning part.
9.
CHECK STOP LAMP SWITCH
Check the stop lamp switch. Refer to
ECM-337, "Component Inspection (Stop Lamp Switch)"
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch. Refer to
(RHD).
Component Inspection (Brake Pedal Position Switch)
INFOID:0000000010703027
1.
CHECK BRAKE PEDAL POSITION SWITCH-1
1.
Turn ignition switch OFF.
2.
Disconnect brake pedal position harness connector.
3.
Check the continuity between brake pedal position switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK BRAKE PEDAL POSITION SWITCH-2
1.
Adjust brake pedal position switch installation. Refer to
BR-18, "Inspection and Adjustment"
(RHD).
2.
Check the continuity between brake pedal position switch terminals as per the following conditions.
+
−
Voltage
Stop lamp switch
Connector
Terminal
E50
1
Ground
Battery volatage
+
−
Continuity
Stop lamp switch
ECM
Connector
Terminal
Connector
Terminal
E50
2
E57
115
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
P1572 BRAKE PEDAL POSITION SWITCH
ECM-337
< 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
>> INSPECTION END
NO
>> Replace brake pedal position switch. Refer to
BR-17, "Removal and Installation"
(LHD)
(RHD).
Component Inspection (Stop Lamp Switch)
INFOID:0000000010703028
1.
CHECK STOP LAMP SWITCH-1
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH-2
1.
Adjust stop lamp switch installation. Refer to
BR-18, "Inspection and Adjustment"
(RHD).
2.
Check the continuity between stop lamp switch terminals as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch. Refer to
BR-17, "Removal and Installation"
(RHD).
Brake pedal position switch
Condition
Continuity
+
−
Terminal
1
2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
Stop lamp switch
Condition
Continuity
+
−
Terminal
1
2
Brake pedal
Fully released
Not existed
Slightly depressed
Existed
Stop lamp switch
Condition
Continuity
+
−
Terminal
1
2
Brake pedal
Fully released
Not existed
Slightly depressed
Existed
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