Infiniti FX35 / FX45. Manual — part 572
DTC P1564 ICC STEERING SWITCH
EC-1049
< SERVICE INFORMATION >
[VK45DE]
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Wiring Diagram
INFOID:0000000001326922
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.
TBWM0724E
EC-1050
< SERVICE INFORMATION >
[VK45DE]
DTC P1564 ICC STEERING SWITCH
Diagnosis Procedure
INFOID:0000000001326923
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
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.
3.
Check each item indication under the following conditions.
TER-
MI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
82
B/W
Sensor ground
[Engine is running]
• Warm-up condition
• Idle speed
Approximately 0V
99
G/Y
ICC steering switch
[Ignition switch: ON]
• ICC steering switch: OFF
Approximately 4.3V
[Ignition switch: ON]
• MAIN switch: Pressed
Approximately 0V
[Ignition switch: ON]
• CANCEL switch: Pressed
Approximately 1.3V
[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed
Approximately 3.7V
[Ignition switch: ON]
• SET/COAST switch: Pressed
Approximately 3V
[Ignition switch: ON]
• DISTANCE switch: Pressed
Approximately 2.2V
PBIB2195E
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
DTC P1564 ICC STEERING SWITCH
EC-1051
< SERVICE INFORMATION >
[VK45DE]
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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 ECM harness connector.
3.
Disconnect combination switch harness connector M203.
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.
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
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-1052
< SERVICE INFORMATION >
[VK45DE]
DTC P1564 ICC STEERING SWITCH
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
EC-1052, "Component Inspection"
.
OK or NG
OK
>> GO TO 8.
NG
>> Replace ICC steering switch.
8.
CHECK INTERMITTENT INCIDENT
>> INSPECTION END
Component Inspection
INFOID:0000000001326924
ICC STEERING SWITCH
1.
Disconnect combination switch (spiral cable) harness connector M203.
2.
Check continuity between combination switch terminals 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
PBIB0967E
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