Nissan Titan A60. Manual — part 443
EC-438
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
ASCD INDICATOR
ASCD INDICATOR
Component Description
INFOID:0000000006158920
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD steering switch is turned ON to indicate that ASCD
system is ready for operation.
SET indicator illuminates when following conditions are met.
• CRUISE indicator is illuminated.
• SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD
setting.
SET indicator remains lit during ASCD control.
Diagnosis Procedure
INFOID:0000000006158921
1.
CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
2.
CHECK DTC
Check that DTC U0101 or U1001 is not displayed.
OK or NG
OK
>> GO TO 3.
NG
>> Perform trouble diagnosis for DTC U0101, U1001. Refer to
.
3.
CHECK COMBINATION METER FUNCTION
MWI-28, "CONSULT-III Function (METER/M&A)"
.
OK or NG
OK
>> GO TO 4.
NG
>> Go to
MWI-93, "Removal and Installation"
4.
CHECK INTERMITTENT INCIDENT
GI-36, "How to Check Terminal"
and
GI-39, "Intermittent Incident"
>> INSPECTION END
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 between
40 km/h (25 MPH) and 144 km/h
(89 MPH)
• ASCD: Operating
ON
• ASCD: Not operating
OFF
COOLING FAN
EC-439
< DTC/CIRCUIT DIAGNOSIS >
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COOLING FAN
Diagnosis Procedure
INFOID:0000000006158922
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E120.
3. Check voltage between IPDM E/R terminal 22 and ground with
CONSULT-III or tester.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• 40A fusible link
• Harness for open or short between IPDM E/R and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN OR SHORT
1. Disconnect cooling fan motor harness connector (1).
2. Check harness continuity between cooling fan motor terminal 1
and IPDM E/R terminal 24, cooling fan motor terminal 2 and
body ground.
Refer to wiring diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
4.
CHECK COOLING FAN MOTOR
EC-439, "Component Inspection"
OK or NG
OK
>> GO TO 5.
NG
>> Replace cooling fan motor.
5.
CHECK INTERMITTENT INCIDENT
GI-36, "How to Check Terminal"
GI-39, "Intermittent Incident"
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace harness connectors.
Component Inspection
INFOID:0000000006158923
COOLING FAN MOTOR
1. Disconnect cooling fan motor harness connector.
Voltage: Battery voltage
PBIB2067E
Continuity should exist.
BBIA0742E
EC-440
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
COOLING FAN
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
AWBIA0529ZZ
ELECTRICAL LOAD SIGNAL
EC-441
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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ELECTRICAL LOAD SIGNAL
Description
INFOID:0000000006158924
The electrical load signal (Headlamp switch signal, etc.) is transferred through the CAN communication line
from BCM to ECM via IPDM E/R.
Diagnosis Procedure
INFOID:0000000006158925
1.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1. Turn ignition switch ON.
2. Connect CONSULT-III and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
2.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check “LOAD SIGNAL” indication under the following conditions.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 5.
3.
CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 6.
4.
CHECK REAR WINDOW DEFOGGER SYSTEM
.
>> INSPECTION END
5.
CHECK HEADLAMP SYSTEM
EXL-139, "Removal and Installation"
.
>> INSPECTION END
6.
CHECK HEATER FAN CONTROL SYSTEM
Refer to
HAC-17, "CONSULT-III Function (HVAC)"
(with automatic air conditioner) or
(with manual air conditioner).
Condition
Indication
Rear window defogger switch: ON
ON
Rear window defogger switch: OFF
OFF
Condition
Indication
Lighting switch: ON at 2nd position
ON
Lighting switch: OFF
OFF
Condition
Indication
Heater fan control switch: ON
ON
Heater fan control switch: OFF
OFF
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