Infiniti FX35 / FX45. Manual - part 424

 

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Infiniti FX35 / FX45. Manual - part 424

 

 

DTC P1564 ICC STEERING SWITCH

EC-457

< SERVICE INFORMATION >

[VQ35DE]

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EC

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 Without CONSULT-III

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 ICC STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect combination switch harness connector.

3.

Disconnect ECM harness connector.

4.

Check harness continuity between combination switch terminal 15 and ECM terminal 82.
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.
• 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 14.
Refer to Wiring Diagram.

2.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

DISTANCE switch

DIST SW

Pressed

ON

Released

OFF

Switch

Monitor item

Condition

Indication

Switch

Condition

Voltage [V]

MAIN switch

Pressed

Approx. 0

Released

Approx. 4.3

CANCEL switch

Pressed

Approx. 1.3

Released

Approx. 4.3

RESUME/ACCELER-
ATE switch

Pressed

Approx. 3.7

Released

Approx. 4.3

SET/COAST switch

Pressed

Approx. 3.0

Released

Approx. 4.3

DISTANCE switch

Pressed

Approx. 2.2

Released

Approx. 4.3

PBIB0311E

Continuity should exist.

Continuity should exist.

EC-458

< SERVICE INFORMATION >

[VQ35DE]

DTC P1564 ICC STEERING SWITCH

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-458, "Component Inspection"

.

OK or NG

OK

>> GO TO 8.

NG

>> Replace ICC steering switch.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

EC-139

.

>> INSPECTION END

Component Inspection

INFOID:0000000001326319

ICC 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 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

PBIB1621E

DTC P1564 ASCD STEERING SWITCH

EC-459

< SERVICE INFORMATION >

[VQ35DE]

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DTC P1564 ASCD STEERING SWITCH

Component Description

INFOID:0000000001326320

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-37

 for the ASCD function.

CONSULT-III Reference Value in Data Monitor Mode

INFOID:0000000001326321

Specification data are reference values.

On Board Diagnosis Logic

INFOID:0000000001326322

• This self-diagnosis has the one trip detection logic.
• The MIL will not light up for this self-diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to 

EC-422

.

DTC Confirmation Procedure

INFOID:0000000001326323

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. 
1.

Turn ignition switch ON and wait at lest 10 seconds.

2.

Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.

3.

Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.

PBIB3255E

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 steer-

ing switch is out of the specified range.

• ECM detects that the ASCD steering switch is stuck 

ON.

• Harness or connectors

(ASCD steering switch circuit is open or 
shorted.)

• ASCD steering switch
• ECM

EC-460

< SERVICE INFORMATION >

[VQ35DE]

DTC P1564 ASCD STEERING SWITCH

4.

Press SET/COAST 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.

Check DTC.

7.

If DTC is detected, go to 

EC-461, "Diagnosis Procedure"

.

Wiring Diagram

INFOID:0000000001326324

TBWM0733E

 

 

 

 

 

 

 

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