Infiniti G37 Coupe. Manual — part 549
P1090, P1093 VVEL ACTUATOR MOTOR
EC-377
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> INSPECTION END
Component Inspection (VVEL ACTUATOR SUB ASSEMBLY)
INFOID:0000000001910900
1.
CHECK VVEL ACTUATOR SUB ASSEMBLY
1.
Turn ignition switch OFF.
2.
Remove VVEL actuator sub assembly. Refer to
EM-84, "Disassembly and Assembly"
.
3.
Turn the ball screw shaft to check that it works smoothly.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE VVEL ACTUATOR SUB ASSEMBLY
1.
Replace VVEL actuator sub assembly.
2.
Go to
EC-377, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000001910902
1.
PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT
EC-21, "VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Special Repair Require-
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
EC-19, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
EC-378
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P1091 VVEL ACTUATOR MOTOR RELAY
P1091 VVEL ACTUATOR MOTOR RELAY
Description
INFOID:0000000001736773
Power supply for the VVEL actuator motor is provided to the VVEL control module via VVEL actuator motor
relay. VVEL actuator motor relay is ON/OFF controlled by the VVEL control module. In addition, when the
VVEL actuator motor relay cannot be controlled by the VVEL control module for some reason, it ON/OFF con-
trolled by ECM.
DTC Logic
INFOID:0000000001736774
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 seconds.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON and wait at least 1 seconds.
4.
Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000001736775
1.
VVEL ACTUATOR MOTOR RELAY POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Check the voltage between VVEL actuator motor relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1091
VVEL actuator motor relay circuit
• VVEL control module detects the
VVEL actuator motor relay is stuck
OFF.
• VVEL control module detects the
VVEL actuator motor relay is stuck
ON.
• Harness or connectors
(VVEL actuator motor relay circuit is
open or shorted.)
(Abort circuit is open or shorted.)
• VVEL actuator motor relay
• VVEL control module
• ECM
VVEL actuator motor relay
Ground
Voltage
Connector
Terminal
E16
2
Ground
Battery voltage
5
P1091 VVEL ACTUATOR MOTOR RELAY
EC-379
< COMPONENT DIAGNOSIS >
[VQ37VHR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
2.
DETECT MALFUNCTIONING PART
Check the following.
• 50A fusible link (letter N)
• Harness for open or short between VVEL actuator motor relay and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
VVEL ACTUATOR MOTOR RELAY POWER SUPPLY CIRCUIT-II
1.
Disconnect VVEL control module harness connector.
2.
Disconnect VVEL actuator motor relay harness connector.
3.
Check the continuity between VVEL actuator motor relay 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 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
VVEL ACTUATOR MOTOR RELAY INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check the continuity between VVEL actuator motor relay harness connector and VVEL control module
harness connector.
2.
Also check harness for short to ground and 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 VVEL ACTUATOR MOTOR RELAY
EC-380, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace VVEL actuator motor relay.
6.
CHECK ABORT CIRCUIT FOR OPEN AND SHORT
1.
Disconnect ECM harness connector.
2.
Check the continuity between VVEL control module harness connector and ECM harness connector.
3.
Also check harness for short to ground and power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK INTERMITTENT INCIDENT
VVEL control module
VVEL actuator motor relay
Continuity
Connector
Terminal
Connector
Terminal
E15
23
E16
1
Existed
VVEL control module
VVEL actuator motor relay
Continuity
Bank
Connector
Terminal
Connector
Terminal
1
E15
13
E16
3
Existed
2
1
VVEL control module
ECM
Continuity
Connector
Terminal
Connector
Terminal
E15
21
F101
28
Existed
EC-380
< COMPONENT DIAGNOSIS >
[VQ37VHR]
P1091 VVEL ACTUATOR MOTOR RELAY
GI-38, "Intermittent Incident"
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace.
8.
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"
>> GO TO 9.
9.
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
Is the DTC P1091 displayed again?
YES
>> GO TO 10.
NO
>> INSPECTION END
10.
REPLACE ECM
1.
Replace ECM.
2.
EC-16, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (ECM) : Special Repair
.
>> INSPECTION END
Component Inspection
INFOID:0000000001736776
1.
CHECK VVEL ACTUATOR MOTOR RELAY
1.
Turn ignition switch OFF.
2.
Remove VVEL actuator motor relay.
3.
Check the continuity between VVEL actuator motor relay termi-
nals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace VVEL actuator motor relay.
Terminal
Condition
Continuity
3 and 5
12V direct current supply between
terminals 1 and 2
Existed
No current supply
Not existed
JMBIA0876ZZ
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