Infiniti FX35, FX50 (S51). Manual — part 888
ASCD BRAKE SWITCH
EC-1093
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
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>> Repair open circuit or short to ground in harness or connectors.
3.
CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between ASCD brake switch harness connector and ECM harness connector.
4.
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.
• Harness connectors E106, M6
• Harness for open or short between ECM and ASCD brake switch
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK ASCD BRAKE SWITCH
EC-1093, "Component Inspection (ASCD Brake Switch)"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace ASCD brake switch.
6.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection (ASCD Brake Switch)
INFOID:0000000005237595
1.
CHECK ASCD BRAKE SWITCH-I
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Check the continuity between ASCD brake switch terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK ASCD BRAKE SWITCH-II
1.
Adjust ASCD brake switch installation. Refer to
BR-7, "Inspection and Adjustment"
.
2.
Check the continuity between ASCD brake switch terminals under the following conditions.
ASCD brake switch
ECM
Continuity
Connector
Terminal
Connector
Terminal
E109
2
M160
117
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released
Existed
Slightly depressed
Not existed
EC-1094
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
ASCD BRAKE SWITCH
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace ASCD brake switch.
ASCD INDICATOR
EC-1095
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
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ASCD INDICATOR
Description
INFOID:0000000005237596
ASCD operation status is indicated by two indicators (CRUISE and SET) and CRUISE lamp in combination
meter.
CRUISE indicator is displayed to indicated that ASCD system is ready for operation when MAIN switch on
ASCD steering switch is turned ON.
SET indicator is displayed when the following conditions are met.
• CRUISE indicator is displayed.
• SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of the
ASCD setting.
SET indicator is displayed during ASCD control.
Refer to
Component Function Check
INFOID:0000000005237597
1.
CHECK ASCD INDICATOR FUNCTION
Check ASCD indicator under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
EC-1095, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000005237598
1.
CHECK DTC
Check that DTC UXXXX is not displayed.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Perform trouble diagnosis for DTC UXXXX.
2.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
MWI-45, "CONSULT-III Function (METER/M&A)"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Repair or replace malfunctioning part.
ASCD INDICATOR
CONDITION
SPECIFICATION
CRUISE LAMP
• Ignition switch: ON
• MAIN switch: Pressed at the
1st time
→
at the 2nd time
ON
→
OFF
SET LAMP
• MAIN switch: ON
• When vehicle speed is be-
tween 40 km/h (25 MPH) and
144 km/h (89 MPH)
• ASCD: Operating
ON
• ASCD: Not operating
OFF
EC-1096
< DTC/CIRCUIT DIAGNOSIS >
[VK50VE]
COOLING FAN
COOLING FAN
Description
INFOID:0000000005237599
COOLING FAN CONTROL MODULE
Cooling fan control module receives ON/OFF pulse duty signal from IPDM E/R. Corresponding to this ON/OFF
pulse duty signal, cooling fan control module sends cooling fan motor operating voltage to cooling fan motor.
The revolution speed of cooling fan motor is controlled by duty cycle of the voltage.
COOLING FAN MOTOR
Cooling fan motor receives cooling fan motor operating voltage from cooling fan control module. The revolu-
tion speed of cooling fan motor is controlled by duty cycle of the voltage.
Component Function Check
INFOID:0000000005237600
1.
CHECK COOLING FAN FUNCTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode with CONSULT-III.
3.
Check that cooling fan speed varies according to the percentage.
Without CONSULT-III
1.
Perform IPDM E/R auto active test and check cooling fan motors operation, refer to
.
2.
Check that cooling fan operates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
EC-1096, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000005237601
1.
CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Disconnect cooling fan control module harness connectors E37, E38.
3.
Turn ignition switch ON.
4.
Check the voltage between cooling fan control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 7.
2.
CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the continuity between cooling fan control module harness connector and ground.
Cooling fan control module
Ground
Voltage
Connector
Terminal
E37
(Cooling fan control module 1)
3
Ground
Battery voltage
E38
(Cooling fan control module 2)
3
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