1.CHECK GROUND CONNECTION
Turn ignition switch OFF.
Check ground connection M95. Refer to Ground Inspection in
Circuit Inspection
.
Is the inspection result normal?
YES
>>
GO TO 2
.
NO
>>
Repair or replace ground connection.
2.CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-III
Turn ignition switch ON.
Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with CONSULT-III.
Check each item indication under the following conditions.
Monitor item
Condition
Indication
MAIN SW
MAIN switch
Pressed
ON
Released
OFF
CANCEL SW
CANCEL switch
Pressed
ON
Released
OFF
RESUME/ACC SW
RESUME/ACCELERATE switch
Pressed
ON
Released
OFF
SET SW
SET/COAST switch
Pressed
ON
Released
OFF
Without CONSULT-III
Turn ignition switch ON.
Check the voltage between ECM harness connector terminals under the following conditions.
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
M107
102
(ASCD steering switch signal)
74
MAIN switch: Pressed
Approx. 0
CANCEL switch: Pressed
0.9 - 1.5
SET/COAST switch: Pressed
1.9 - 2.4
RESUME/ACCELERATE switch: Pressed
3.0 - 3.3
All ASCD steering switches: Released
4.0 - 4.2
Is the inspection result normal?
YES
>>
GO TO 8
.
NO
>>
GO TO 3
.
3.CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
Turn ignition switch OFF.
Disconnect ECM harness connector.
Disconnect combination switch (spiral cable) harness connector.
Check the continuity between combination switch (spiral cable) and ECM harness connector.
Combination switch (spiral cable)
ECM
Continuity
Connector
Terminal
Connector
Terminal
M303
16
M107
74
Existed
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.
Combination switch (spiral cable)
Harness for open and short between ECM and combination switch (spiral cable)
>>
Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
Check the continuity between combination switch (spiral cable) and ECM harness connector.
Combination switch (spiral cable)
ECM
Continuity
Connector
Terminal
Connector
Terminal
M303
13
M107
102
Existed
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.
Combination switch (spiral cable)
Harness for open and short between ECM and combination switch (spiral cable)
>>
Repair open circuit, short to ground or short to power in harness or connectors.
7.CHECK ASCD STEERING SWITCH
Refer to
Component Inspection (GT-R certified NISSAN dealer)
.
Is the inspection result normal?
YES
>>
GO TO 8
.
NO
>>
Replace ASCD steering switch.
8.CHECK INTERMITTENT INCIDENT
Refer to
Intermittent Incident
.
>>
INSPECTION END