Infiniti G35 (V35). Manual — part 416
DTC P1564 ASCD STEERING SWITCH
EC-545
C
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EC
Diagnostic Procedure
NBS000ZV
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
PBIB2192E
EC-546
DTC P1564 ASCD STEERING SWITCH
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “MAIN SW”, “RESUME/ACC SW”, “SET SW” and “CANCEL SW” in “DATA MONITOR” mode with
CONSULT-II.
3.
Check each item indication under the following conditions.
Without CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 99 and ground with press-
ing each button.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 3.
3.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect combination switch harness connector M203.
4.
Check harness continuity between combination switch terminal 15 and ECM terminal 67.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
Switch Monitor
item
Condition
Indication
MAIN switch
MAIN SW
Pressed
ON
Released
OFF
CANCEL switch
CANCEL SW
Pressed
ON
Released
OFF
RESUME/ACCEL-
ERATE switch
RESUME/ACC SW
Pressed
ON
Released
OFF
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
SEC006D
Switch
Condition
Voltage [V]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4
CANCEL switch
Pressed
Approx. 1
Released
Approx. 4
RESUME/ACCELERATE
switch
Pressed
Approx. 3
Released
Approx. 4
SET/COAST switch
Pressed
Approx. 2
Released
Approx. 4
PBIB0311E
Continuity should exist.
DTC P1564 ASCD STEERING SWITCH
EC-547
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A
EC
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 99 and combination switch terminal 14.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK ASCD STEERING SWITCH
Refer to
EC-548, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace steering wheel.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Continuity should exist.
EC-548
DTC P1564 ASCD STEERING SWITCH
Component Inspection
NBS000ZW
ASCD STEERING SWITCH
1.
Disconnect combination switch (spiral cable) harness connector M203.
2.
Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch.
If NG replace ASCD steering switch.
Switch
Condition
Resistance [
Ω
]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4,000
CANCEL switch
Pressed
Approx. 250
Released
Approx. 4,000
RESUME/ACCELERATE
switch
Pressed
Approx. 1,480
Released
Approx. 4,000
SET/COAST switch
Pressed
Approx. 660
Released
Approx. 4,000
PBIB2549E
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