Infiniti FX35 / FX45. Manual — part 426
DTC P1572 ICC BRAKE SWITCH
EC-465
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
DTC P1572 ICC BRAKE SWITCH
Component Description
INFOID:0000000001326330
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
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001326331
Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001326332
• This self-diagnosis has the one trip detection logic.
• The MIL will not light up for this self-diagnosis.
NOTE:
• If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
• This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
DTC Confirmation Procedure
INFOID:0000000001326333
CAUTION:
Always drive vehicle at a safe speed.
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.
PBIB1539E
MONITOR ITEM
CONDITION
SPECIFICATION
BRAKE SW1
(ICC brake switch)
• Ignition switch: ON
• Brake pedal: Fully released
ON
• Brake pedal: Slightly depressed
OFF
BRAKE SW2
(Stop lamp switch)
• Ignition switch: ON
• Brake pedal: Fully released
OFF
• Brake pedal: Slightly depressed
ON
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1572
1572
ICC brake switch
A)
When the vehicle speed is above 30km/h (19
MPH), ON signals from the stop lamp switch
and the ICC brake switch are sent to ECM at
the same time.
• Harness or connectors
(Stop lamp switch circuit is shorted.)
• Harness or connectors
(ICC brake switch circuit is shorted.)
• Stop lamp switch
• ICC brake switch
• ICC brake hold relay
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• ECM
B)
ICC brake switch signal is not sent to ECM
for extremely long time while the vehicle is
driving
EC-466
< SERVICE INFORMATION >
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
• Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for
malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
TESTING CONDITION:
Steps 4 and 5 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.
WITH CONSULT-III
1.
Start engine.
2.
Select “DATA MONITOR” mode with CONSULT-III.
3.
Press MAIN switch and make sure that CRUISE indicator lights up.
4.
Drive the vehicle for at least 5 consecutive seconds under the following condition.
5.
Check 1st trip DTC.
If 1st trip DTC is detected, go to
If 1st trip DTC is not detected, go to the following step.
6.
Drive the vehicle for at least 5 consecutive seconds under the following condition.
7.
Check 1st trip DTC.
8.
If 1st trip DTC is detected, go to
WITH GST
Follow the procedure “WITH CONSULT-III” above.
VHCL SPEED SE
More than 30 km/h (19 MPH)
Selector lever
Suitable position
VHCL SPEED SE
More than 30 km/h (19 MPH)
Selector lever
Suitable position
Driving location
Depress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned vehicle speed.
DTC P1572 ICC BRAKE SWITCH
EC-467
< SERVICE INFORMATION >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Wiring Diagram
INFOID:0000000001326334
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.
TBWM1401E
EC-468
< SERVICE INFORMATION >
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Diagnosis Procedure
INFOID:0000000001326335
1.
CHECK OVERALL FUNCTION-I
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 voltage between ECM terminal 108 and ground under the
following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK OVERALL FUNCTION-II
With CONSULT-III
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-III
TERMI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
101
P/L
Stop lamp switch
[Ignition switch: OFF]
• Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]
• Brake pedal: Slightly depressed
BATTERY VOLTAGE
(11 - 14V)
108
SB
ICC brake switch
[Ignition switch: ON]
• Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]
• Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14V)
CONDITION
INDICATION
Brake pedal: Slightly depressed
OFF
Brake pedal: Fully released
ON
CONDITION
VOLTAGE
Brake pedal: Slightly depressed
Approximately 0V
Brake pedal: Fully released
Battery voltage
MBIB0061E
CONDITION
INDICATION
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст