Infiniti G35 (V35) Sedan. Manual - part 563

EC-398

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[VQ35HR]

P1564 ICC STEERING SWITCH

P1564 ICC STEERING SWITCH

Description

INFOID:0000000000956798

ICC 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 

CCS-16, "System Description"

 for the ICC function.

DTC Logic

INFOID:0000000000956799

DTC DETECTION LOGIC

NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to

EC-338, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test. 

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 10 seconds.

2.

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

3.

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

4.

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

5.

Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.

6.

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

7.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-398, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000956800

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in 

GI-42, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ICC STEERING SWITCH CIRCUIT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW”, “SET SW” and “DIST SW” in “DATA MONITOR”
mode with CONSULT-III.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

P1564

ICC steering switch

• An excessively high voltage signal from the 

ICC steering switch is sent to ECM.

• ECM detects that input signal from the ICC 

steering switch is out of the specified range.

• ECM detects that the ICC steering switch is 

stuck ON.

• Harness or connectors

(The switch circuit is open or shorted.)

• ICC steering switch
• ECM

P1564 ICC STEERING SWITCH

EC-399

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3.

Check each item indication under the following conditions.

 Without CONSULT-III

1.

Turn ignition switch ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 3.

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 the continuity between combination switch and ECM harness connector.

5.

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

>> 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

Monitor item

Condition

Indication

MAIN SW

MAIN switch

Pressed

ON

Released

OFF

CANCEL SW

CANCEL switch

Pressed

ON

Released

OFF

RESUME/ACC SW

RESUME/ACCEL-
ERATE switch

Pressed

ON

Released

OFF

SET SW

SET/COAST switch

Pressed

ON

Released

OFF

DIST SW

DISTANCE switch

Pressed

ON

Released

OFF

ECM

Ground

Condition

Voltage

Connector

Terminal

M107

101

(ICC steering switch signal)

Ground

MAIN switch: Pressed

Approx. 0V

CANCEL switch: Pressed

Approx. 1.3V

DISTANCE switch: Pressed

Approx. 2.2V

SET/COAST switch: Pressed

Approx. 3.0V

RESUME/ACCELERATE switch: Pressed

Approx. 3.7V

All ICC steering switches: Released

Approx. 4.3V

Combination switch

ECM

Continuity

Terminal

Connector

Terminal

16

M107

108

Existed

EC-400

< COMPONENT DIAGNOSIS >

[VQ35HR]

P1564 ICC STEERING SWITCH

1.

Check the continuity between combination switch and ECM harness connector.

2.

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

>> Repair open circuit or short to ground or short to power in harness or connectors.

7.

CHECK ICC STEERING SWITCH

Refer to 

EC-400, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace ICC steering switch.

8.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000000956801

1.

CHECK ICC STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect combination switch (spiral cable) harness connector M303.

3.

Check resistance between combination switch harness connector terminals under the following condi-
tions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC steering switch

Combination switch

ECM

Continuity

Terminal

Connector

Terminal

13

M107

101

Existed

Combination switch

Condition

Resistance

Connector

Terminals

M303

13 and 16

MAIN switch: Pressed

Approx. 0 

Ω

CANCEL switch: Pressed

Approx. 310 

Ω

DISTANCE switch: Pressed

Approx. 740 

Ω

SET/COAST switch: Pressed

Approx. 1,400 

Ω

RESUME/ACCELERATE switch: Pressed

Approx. 2,600 

Ω

All ICC steering switches: Released

Approx. 5,500 

Ω

P1568 ICC FUNCTION

EC-401

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P1568 ICC FUNCTION

DTC Logic

INFOID:0000000000956802

DTC DETECTION LOGIC

NOTE:
• If DTC P1568 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC

U1000, U1001. Refer to 

EC-137, "DTC Logic"

.

• If DTC P1568 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer

to 

EC-138, "DTC Logic"

.

• If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

to 

EC-338, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Press MAIN switch on ICC steering switch.

3.

Drive the vehicle at more than 40 km/h (25 MPH).

CAUTION:

Always drive vehicle at a safe speed.

4.

Press SET/COAST switch.

5.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-401, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000956803

1.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Perform 

CCS-11, "ACTION TEST : Special Repair Requirement (Vehicle-To-Vehicle Distance Control

Mode)"

.

3.

Check DTC of ICC sensor integrated unit. Refer to 

CCS-23, "Diagnosis Description"

.

>> INSPECTION END

DTC No.

Trouble Diagnosis 

Name

DTC Detecting Condition

Possible Cause

P1568

ICC function

ECM detects a difference between signals 
from ICC sensor integrated unit is out of spec-
ified range.

• Harness or connectors

(The CAN communication line is open or 
shorted.)

• ICC sensor integrated unit
• ECM