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![INFINITI M35 2007 Factory Service Manual EC-1272
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS005ME
ASCD steering switch has variant values of electr INFINITI M35 2007 Factory Service Manual EC-1272
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS005ME
ASCD steering switch has variant values of electr](/manual-img/42/57024/w960_57024-2800.png)
EC-1272
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS005ME
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
Refer to EC-738, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeNBS005MF
Specification data are reference values.
On Board Diagnosis LogicNBS005MG
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to
EC-1190, "
DTC P0605 ECM" .
1. ASCD steering switch 2. RESUME/ACCELERATE switch 3. SET/COAST switch
4. CANCEL switch 5. DISTANCE switch (Models with ICC) 6. MAIN switch
PBIB2709E
MONITOR ITEM CONDITION SPECIFICATION
MAIN SW
Ignition switch: ONMAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
Ignition switch: ONCANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
Ignition switch: ONRESUME/ACCELERATE switch:
PressedON
RESUME/ACCELERATE switch:
ReleasedOFF
SET SW
Ignition switch: ONSET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1564
1564ASCD steering switch
An excessively high voltage signal from the
ASCD steering switch is sent to ECM.
ECM detects that input signal from the ASCD
steering switch is out of the specified range.
ECM detects that the ASCD steering switch is
stuck ON.
Harness or connectors
(The switch circuit is open or shorted.)
ASCD steering switch
ECM
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DTC P1564 ASCD STEERING SWITCH
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DTC Confirmation ProcedureNBS005MH
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 10 seconds.
4. Press MAIN switch for at least 10 seconds, then release it and
wait at least 10 seconds.
5. Press CANCEL switch for at least 10 seconds, then release it
and wait at least 10 seconds.
6. Press RESUME/ACCELERATE switch for at least 10 seconds,
then release it and wait at least 10 seconds.
7. Press SET/COAST switch for at least 10 seconds, then release
it and wait at least 10 seconds.
8. If DTC is detected, go to EC-1275, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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EC-1274
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005MI
TBWT1048E
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![INFINITI M35 2007 Factory Service Manual DTC P1564 ASCD STEERING SWITCH
EC-1275
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Specification data are reference values and are measured between each terminal and ground.
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Specification data are reference values and are measured between each terminal and ground.
CA](/manual-img/42/57024/w960_57024-2803.png)
DTC P1564 ASCD STEERING SWITCH
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureNBS005MJ
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-864, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
67 B/WSensor ground
(ASCD steering switch[Engine is running]
Warm-up condition
Idle speedApproximately 0V
99 Y ASCD steering switch[Ignition switch: ON]
ASCD steering switch: OFFApproximately 4V
[Ignition switch: ON]
MAIN switch: PressedApproximately 0V
[Ignition switch: ON]
CANCEL switch: PressedApproximately 1V
[Ignition switch: ON]
RESUME/ACCELERATE switch: PressedApproximately 3V
[Ignition switch: ON]
SET/COAST switch: PressedApproximately 2V
1. Body ground M70 2. Body ground M16
PBIB2782E
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![INFINITI M35 2007 Factory Service Manual EC-1276
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SW”, “CANCEL S INFINITI M35 2007 Factory Service Manual EC-1276
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DTC P1564 ASCD STEERING SWITCH
Revision: 2007 April2007 M35/M45
2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SW”, “CANCEL S](/manual-img/42/57024/w960_57024-2804.png)
EC-1276
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DTC P1564 ASCD STEERING SWITCH
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2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET 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 M303.
4. Check harness continuity between combination switch terminal 18 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 SWPressed ON
Released OFF
CANCEL switch CANCEL SWPressed ON
Released OFF
RESUME/ACCELERATE
switchRESUME/ACC SWPressed ON
Released OFF
SET/COAST switch SET SWPressed ON
Released OFF
SEC006D
Switch Condition Voltage [V]
MAIN switchPressed Approx. 0
Released Approx. 4
CANCEL switchPressed Approx. 1
Released Approx. 4
RESUME/ACCELERATE
switchPressed Approx. 3
Released Approx. 4
SET/COAST switchPressed Approx. 2
Released Approx. 4
PBIB0311E
Continuity should exist.
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![INFINITI M35 2007 Factory Service Manual DTC P1564 ASCD STEERING SWITCH
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4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M72, F102
Combination INFINITI M35 2007 Factory Service Manual DTC P1564 ASCD STEERING SWITCH
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4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M72, F102
Combination](/manual-img/42/57024/w960_57024-2805.png)
DTC P1564 ASCD STEERING SWITCH
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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 21.
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.
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-1278, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace ASCD steering switch.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-857, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
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EC-1278
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DTC P1564 ASCD STEERING SWITCH
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Component InspectionNBS005MK
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M303.
2. Check continuity between combination switch terminals 18 and
21 with pushing each switch.
Switch Condition Resistance [Ω]
MAIN switchPressed Approx. 0
Released Approx. 4,000
CANCEL switchPressed Approx. 250
Released Approx. 4,000
RESUME/ACCELERATE
switchPressed Approx. 1,480
Released Approx. 4,000
SET/COAST switchPressed Approx. 660
Released Approx. 4,000
PBIB2739E
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![INFINITI M35 2007 Factory Service Manual DTC P1568 ICC FUNCTION
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DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS005ML
This self-diagnosis has the one trip INFINITI M35 2007 Factory Service Manual DTC P1568 ICC FUNCTION
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DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS005ML
This self-diagnosis has the one trip](/manual-img/42/57024/w960_57024-2807.png)
DTC P1568 ICC FUNCTION
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DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS005ML
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-865, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1568 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-868, "
DTC U1010 CAN COMMUNICATION" .
If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-1190, "
DTC P0605 ECM"
DTC Confirmation ProcedureNBS005MM
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
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:
Step 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test
is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Press MAIN switch on ICC steering switch.
4. Drive the vehicle at more than 40 km/h (25 MPH).
5. Press SET/COAST switch.
6. If DTC is detected, go to EC-1279, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS005MN
1. REPLACE ICC SENSOR INTEGRATED UNIT
1. Replace ICC sensor integrated unit.
2. Perform ACS-12, "
ACTION TEST" .
3. Check DTC of ICC sensor integrated unit. Refer to ACS-40, "
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS" .
>>INSPECTION END
DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P1568
1568ICC functionECM detects a difference between signals
from ICC unit is out of specified range.
Harness or connectors
(The CAN communication line is open or
shorted.)
ICC sensor integrated unit
ECM
SEF058Y