Infiniti FX35, FX50 (S51). Manual - part 892
ICC BRAKE SWITCH
EC-1109
< DTC/CIRCUIT DIAGNOSIS >
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ICC BRAKE SWITCH
Description
INFOID:0000000005237615
When the brake pedal is depressed, ICC brake switch is turned OFF and stop lamp switch is turned ON. ECM
detects the state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to
for the ICC function.
Component Function Check
INFOID:0000000005237616
1.
CHECK ICC BRAKE SWITCH FUNCTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3.
Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
EC-1109, "Diagnosis Procedure"
.
Diagnosis Procedure
INFOID:0000000005237617
1.
CHECK DTC WITH ICC SENSOR INTEGRATED UNIT
CCS-44, "Diagnosis Description"
Are any DTCs detected?
YES
>> Perform the Diagnosis Procedure corresponding to the detected DTC.
NO
>> GO TO 2.
2.
CHECK OVERALL FUNCTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-III.
3.
Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-III
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector terminals under the following conditions.
Monitor item
Condition
Indication
BRAKE SW1
(ICC brake switch)
Brake pedal
Slightly depressed
OFF
Fully released
ON
ECM
Condition
Voltage
Connector
+
–
Terminal
Terminal
M160
117
(ICC brake switch signal)
128
Brake pedal
Slightly depressed
Approx. 0 V
Fully released
Battery voltage
Monitor item
Condition
Indication
BRAKE SW1
(ICC brake switch)
Brake pedal
Slightly depressed
OFF
Fully released
ON