Infiniti G37 Coupe. Manual — part 567
P1607 VVEL CONTROL MODULE
EC-449
< COMPONENT DIAGNOSIS >
[VQ37VHR]
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EC
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P1607 VVEL CONTROL MODULE
Description
INFOID:0000000001910908
The VVEL control module consists of a microcomputer and connec-
tors for signal input and output and for power supply. The VVEL con-
trol module controls VVEL system.
DTC Logic
INFOID:0000000001736781
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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 10V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start engine and let it idle for at least 1 second.
2.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001736782
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “SELF-DIAG RESULTS” mode with CONSULT-III.
3.
Touch “ERASE”.
4.
Perform DTC Confirmation Procedure.
See
.
With GST
1.
Turn ignition switch ON.
2.
Select Service $04 with GST.
3.
Perform DTC Confirmation Procedure.
See
.
JMBIA0879ZZ
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1607
VVEL control module circuit
• The internal circuit of the VVEL con-
trol module is malfunctioning.
• VVEL control module
EC-450
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P1607 VVEL CONTROL MODULE
Is the DTC P1607 displayed again?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
REPLACE VVEL CONTROL MODULE
1.
Replace VVEL control module.
2.
EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MOD-
ULE) : Special Repair Requirement"
>> INSPECTION END
P1608 VVEL SENSOR POWER SUPPLY
EC-451
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
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M
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EC
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P
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P1608 VVEL SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000001736783
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing 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 10V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
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:0000000001736784
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.
VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect VVEL control shaft position sensor harness connector.
2.
Turn ignition switch ON.
3.
Check the voltage between VVEL control shaft position sensor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1608
VVEL sensor power supply circuit
VVEL control module detects a voltage
of power source for sensor is excessively
low or high.
• Harness or connectors
(VVEL control shaft position sensor
power supply circuit is open or shorted.)
• VVEL control shaft position sensor
• VVEL control module
VVEL control shaft position sensor
Ground
Voltage
Bank
Connector
Terminal
1
F46
3
Ground
Approx. 5V
6
2
F47
3
6
EC-452
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P1608 VVEL SENSOR POWER SUPPLY
3.
CHECK VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND
SHORT
1.
Turn ignition switch OFF.
2.
Disconnect VVEL control module harness connector.
3.
Check the continuity between VVEL control shaft position sensor harness connector and VVEL control
module harness connector.
4.
Also check harness for short to ground and power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors F1, E3
• Harness for open or short between VVEL control shaft position sensor and VVEL control module
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace.
6.
REPLACE VVEL CONTROL MODULE
1.
Replace VVEL control module.
2.
EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MOD-
ULE) : Special Repair Requirement"
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace.
8.
REPLACE VVEL ACTUATOR SUB ASSEMBLY
1.
Replace VVEL actuator sub assembly.
2.
Go to
EC-452, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000001910907
1.
PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
VVEL control shaft position sensor
VVEL control module
Continuity
Bank
Connector
Terminal
Connector
Terminal
1
F46
3
E15
9
Existed
6
22
2
F47
3
7
6
20
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