Infiniti FX35, FX50 (S51). Manual — part 866
P1226, P1235 TP SENSOR
EC-1005
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
D
E
F
G
H
I
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M
A
EC
N
P
O
3.
Check that no foreign matter is caught between the throttle valve
(1) 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.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace malfunctioning electric throttle control actuator.
2.
EC-1005, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000005237489
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-581, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-582, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
JMBIA1556ZZ
EC-1006
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
Description
INFOID:0000000005237490
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor. The throttle position
sensor provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions
via the throttle control motor.
DTC Logic
INFOID:0000000005237491
DTC DETECTION LOGIC
NOTE:
If DTC P1233 or P2101 is displayed with DTC P1238, P2119, first perform the trouble diagnosis for DTC
P1238, P2119. Refer to
.
If DTC P1233 or P2101 is displayed with DTC P1290, P2100, first perform the trouble diagnosis for DTC
P1290, P2100. Refer to
.
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 11 V when
engine is running.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn ignition switch ON and wait at least 2 seconds.
2.
Start engine and let it idle for 5 seconds.
3.
Check DTC.
Is DTC detected?
YES
>> Go to
EC-1006, "Diagnosis Procedure"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005237492
1.
CHECK GROUND CONNECTION
1.
Turn ignition switch OFF.
2.
Check ground connection M95. Refer to Ground Inspection in
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I
Check the voltage between ECM harness connector terminals as per the following.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1233
Electric throttle control
performance (bank 2)
Electric throttle control function does not
operate properly.
• Harness or connectors
(Throttle control motor circuit is open or
shorted)
• Electric throttle control actuator
P2101
Electric throttle control
performance (bank 1)
P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1007
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 3.
3.
CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect IPDM E/R harness connector E7.
4.
Check the continuity between IPDM E/R harness connector and ECM harness connector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E10, F10
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II
1.
Check the continuity between IPDM E/R harness connector and ECM harness connector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E10, F10
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
7.
CHECK FUSE
DTC
ECM
Condition
Voltage (V)
+
–
Connector
Terminal
Connector
Terminal
P1233
F111
1
M160
128
Ignition switch OFF
Approx. 0
Ignition switch ON
Battery voltage
P2101
F110
49
Ignition switch OFF
Approx. 0
Ignition switch ON
Battery voltage
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E7
70
F110
19
Existed
DTC
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
P1233
E7
54
F111
1
Existed
P2101
F110
49
EC-1008
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
P1233, P2101 ELECTRIC THROTTLE CONTROL FUNCTION
1.
Disconnect 15 A fuse (No. 51) from IPDM E/R.
2.
Check if 15 A fuse is blown.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace 15 A fuse.
8.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace harness or connectors.
9.
CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1.
Turn ignition switch OFF.
2.
Disconnect electric throttle control actuator harness connector.
3.
Disconnect ECM harness connector.
4.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace malfunctioning part.
10.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Remove the intake air duct.
2.
Check that no foreign matter is caught between the throttle valve
(1) and the housing.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
11.
CHECK THROTTLE CONTROL MOTOR
EC-1009, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> GO TO 13.
12.
CHECK INTERMITTENT INCIDENT
DTC
Electric throttle control actuator
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P1233
2
F64
5
F111
2
Not existed
5
Existed
6
2
Existed
5
Not existed
P2101
1
F66
5
F110
50
Not existed
53
Existed
6
50
Existed
53
Not existed
JMBIA1556ZZ
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