Infiniti M35/M45 Y50. Manual - part 521

 

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Infiniti M35/M45 Y50. Manual - part 521

 

 

DTC P1564 ICC STEERING SWITCH

EC-557

[VQ35DE]

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3. 

CHECK ICC 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.

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 ICC 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 ICC STEERING SWITCH

Refer to 

EC-558, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace ICC steering switch.

8. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-153, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.

Continuity should exist.

EC-558

[VQ35DE]

DTC P1564 ICC STEERING SWITCH

Component Inspection

NBS0054P

ICC 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.

If NG, replace ICC steering switch.

Switch

Condition

Resistance [

Ω

]

MAIN switch

Pressed

Approx. 0

Released

Approx. 5,500

CANCEL switch

Pressed

Approx. 310

Released

Approx. 5,500

RESUME/ACCELERATE 
switch

Pressed

Approx. 2,600

Released

Approx. 5,500

SET/COAST switch

Pressed

Approx. 1,400

Released

Approx. 5,500

DISTANCE switch

Pressed

Approx. 740

Released

Approx. 5,500

PBIB2739E

DTC P1564 ASCD STEERING SWITCH

EC-559

[VQ35DE]

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DTC P1564 ASCD STEERING SWITCH

PFP:25551

Component Description

NBS0054Q

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-36, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

  for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

NBS0054R

Specification data are reference values.

On Board Diagnosis Logic

NBS0054S

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-483, "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: ON

MAIN switch: Pressed

ON

MAIN switch: Released

OFF

CANCEL SW

●

Ignition switch: ON

CANCEL switch: Pressed

ON

CANCEL switch: Released

OFF

RESUME/ACC SW

●

Ignition switch: ON

RESUME/ACCELERATE switch: 
Pressed

ON

RESUME/ACCELERATE switch: 
Released

OFF

SET SW

●

Ignition switch: ON

SET/COAST switch: Pressed

ON

SET/COAST switch: Released

OFF

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1564
1564

ASCD 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

EC-560

[VQ35DE]

DTC P1564 ASCD STEERING SWITCH

DTC Confirmation Procedure

NBS0054T

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-562, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

SEF058Y

 

 

 

 

 

 

 

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