Infiniti EX35. Manual — part 657
EC-370
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1239, P2135 TP SENSOR
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between electric throttle control actuator harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
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 and short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.
2.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK THROTTLE POSITION SENSOR
EC-371, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace malfunctioning electric throttle control actuator.
2.
EC-371, "Special Repair Requirement"
DTC
Electric throttle control actuator
Ground
Voltage (V)
Bank
Connector
Terminal
P1239
2
F27
1
Ground
Approx. 5
P2135
1
F6
6
DTC
Electric throttle control actuator
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P1239
2
F27
4
F101
48
Existed
P2135
1
F6
3
40
DTC
Electric throttle control actuator
ECM
Continuity
Bank
Connector
Terminal
Connector
Terminal
P1239
2
F27
2
F101
31
Existed
3
35
P2135
1
F6
4
30
5
34
P1239, P2135 TP SENSOR
EC-371
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000003133538
1.
CHECK THROTTLE POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
EC-17, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
.
4.
Turn ignition switch ON.
5.
Set selector lever to D position.
6.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace malfunctioning electric throttle control actuator.
2.
Go to
EC-371, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000003133539
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-17, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-18, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
F101
30
[TP sensor 1 (bank 1)]
40
Accelerator pedal : Fully released
More than 0.36
Accelerator pedal : Fully depressed
Less than 4.75
31
[TP sensor 1 (bank 2)]
48
Accelerator pedal : Fully released
More than 0.36
Accelerator pedal : Fully depressed
Less than 4.75
34
[TP sensor 2 (bank 1)]
40
Accelerator pedal : Fully released
Less than 4.75
Accelerator pedal : Fully depressed
More than 0.36
35
[TP sensor 2 (bank 2)]
48
Accelerator pedal : Fully released
Less than 4.75
Accelerator pedal : Fully depressed
More than 0.36
EC-372
< COMPONENT DIAGNOSIS >
[VQ35HR]
P1290, P2100, P2103 THROTTLE CONTROL MOTOR RELAY
P1290, P2100, P2103 THROTTLE CONTROL MOTOR RELAY
Description
INFOID:0000000003133540
Power supply for the throttle control motor is provided to the ECM via throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends
an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition
switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not
provided to the ECM.
DTC Logic
INFOID:0000000003133541
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V.
Which DTC is detected?
P1290, P2100>>GO TO 2.
P2103 >> GO TO 3.
2.
PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P1290 AND P2100
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
NO
>> INSPECTION END
3.
PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P2103
1.
Turn ignition switch ON and wait at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003133542
1.
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.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1290
Throttle control motor relay
circuit open (bank 2)
ECM detects a voltage of power source for
throttle control motor is excessively low.
• Harness or connectors
(Throttle control motor relay circuit is
open)
• Throttle control motor relay
P2100
Throttle control motor relay
circuit open (bank 1)
P2103
Throttle control motor relay
circuit short
ECM detect the throttle control motor relay is
stuck ON.
• Harness or connectors
(Throttle control motor relay circuit is
shorted)
• Throttle control motor relay
P1290, P2100, P2103 THROTTLE CONTROL MOTOR RELAY
EC-373
< COMPONENT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
5.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E3, F1
• Harness connectors F104, F105
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT
1.
Check the continuity between IPDM E/R sensor 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 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E3, F1
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK FUSE
1.
Disconnect 15A fuse (No. 51) from IPDM E/R.
2.
Check 15A fuse for blown.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace 15A fuse.
6.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace harness or connectors.
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
E7
70
F101
25
Existed
DTC
IPDM E/R
ECM
Continuity
Connector
Terminal
Connector
Terminal
P1290
E7
54
F102
52
Existed
P2100
F101
3
P2103
F101
3
F102
52
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