Dodge Dakota (ND). Manual — part 295
B1659-FRONT FOG LAMP CONTROL CIRCUIT LOW (CONTINUED)
For the Exterior Lighting system circuit diagram (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING - EXTERIOR -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the Fog Lamps activated.
•
Set Condition:
•
When the FCM detects a LOW condition.
Possible Causes
(L139) FOG LAMP CONTROL CIRCUIT
FRONT CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Turn the Fog Lamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1659-FRONT FOG LAMP CONTROL
CIRCUIT LOW?
Yes
>> Go To 2
No
>> The condition that caused the symptom is currently not
present. Inspect the related wiring for a possible intermit-
tent condition. Look for any chafed, pierced, pinched, or
partially broken wires.
Perform the BODY VERIFICATION TEST-VER1.
2.
(L139) FOG LAMP CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM PDM harness connector.
Measure the resistance between ground and the (L139) Fog Lamp
Control circuit.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Front Control Module (FCM) in accordance
with the service information.
Perform the BODY VERIFICATION TEST VER1.
No
>> Repair the (L139) Fog Lamp Control circuit for a short to
ground condition.
Perform the BODY VERIFICATION TEST VER1.
8L - 42
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 43
B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH (CONTINUED)
For the Exterior Lighting system circuit diagram (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING - EXTERIOR -
SCHEMATICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the Front Fog Lamps activated.
•
Set Condition:
•
When the FCM detects a HIGH condition.
Possible Causes
FRONT FOG LAMP RELAY
MODULE-POWER DISTRIBUTION
FRONT CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Actuate the Front Fog Lamps.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1660-FRONT FOG LAMP CONTROL
CIRCUIT HIGH?
Yes
>> Go To 2
No
>> The condition that caused the symptom is currently not
present. Inspect the related wiring for a possible intermit-
tent condition. Look for any chafed, pierced, pinched, or
partially broken wires.
Perform the BODY VERIFICATION TEST-VER1.
2.
FRONT FOG LAMP RELAY
Turn the ignition off.
Remove and install a known good relay in place of the Front Fog Lamp Relay.
Do the Front Fog Lamps operate normally?
Yes
>> Replace the Front Fog Lamp Relay in accordance with the service information.
Perform the BODY VERIFICATION TEST VER1.
No
>> Go To 3
8L - 44
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B1660-FRONT FOG LAMP CONTROL CIRCUIT HIGH (CONTINUED)
3.
FRONT CONTROL MODULE
Turn the ignition off.
Remove the Front Fog Lamp Relay from the MPD.
Remove the FCM from the Module Power Distribution.
Measure the voltage of the (L139) Front Fog Lamp Relay Output cir-
cuit and ground.
Is the voltage above 1.0 volts?
Yes
>> Replace the Module Power Distribution center in accor-
dance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
No
>> Replace the Module Front Control in accordance with the
service information.
Perform the BODY VERIFICATION TEST-VER1.
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 45
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст