Dodge Dakota (ND). Manual — part 292
B1643-REAR LEFT TURN CONTROL CIRCUIT LOW (CONTINUED)
For the Exterior Lighting circuit diagram (Refer to 8 - ELECTRICAL/LAMPS/LIGHTING - EXTERIOR - SCHEMAT-
ICS AND DIAGRAMS).
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
Set Condition:
Possible Causes
(L63) REAR LEFT TURN SIGNAL CONTROL CIRCUIT
MODULE POWER DISTRIBUTION CENTER
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 Left Turn Signals on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1643-REAR LEFT TURN 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.
L63 LEFT TURN SIGNAL CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM PDM connector.
Measure the resistance between ground and the (L63) Rear Left Turn
Signal Control circuit.
Is the resistance below 5.0 ohms?
Yes
>> Go To 3
No
>> Repair the (L63) Rear Left Turn Signal Control circuit for a
short to ground.
Perform the BODY VERIFICATION TEST-VER1.
8L - 30
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B1643-REAR LEFT TURN CONTROL CIRCUIT LOW (CONTINUED)
3.
FRONT CONTROL MODULE
Turn the ignition off.
Disconnect the FCM connector.
Disconnect the PDM connector.
Measure the resistance between ground and the (L63) Left Turn Signal Control circuit in the PDM.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Module Power Distribution Center in accordance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
No
>> Replace the Front Control Module in accordance with the service information.
Perform the BODY VERIFICATION TEST-VER1.
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 31
B1644-REAR LEFT TURN CONTROL CIRCUIT HIGH
8L - 32
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B1644-REAR LEFT TURN 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:
Continuously
•
Set Condition:
When the Front Control Module detects a short to battery on the Control circuit.
Possible Causes
(L63) TURN SIGNAL CONTROL CIRCUIT
POWER DISTRIBUTION CENTER
FRONT CONTROL MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
Clear all FCM DTC’s
Turn the Left Turn Signal on.
With the scan tool, read DTC’s.
Does the scan tool read: B1644-REAR LEFT TURN CONTROL
CIRCUIT HIGH?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not
present at this time. Using the wiring diagram/schematic
as a guide, inspect the wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2.
L63 LEFT TURN SIGNAL CONTROL CIRCUIT
Turn the ignition off.
Disconnect the PDM connector from the FCM.
Measure the resistance of the (L63) Left Rear Turn Signal Control cir-
cuit.
Is the resistance above 5.0 ohms?
No
>> Repair the (L63) Turn Signal Control circuit.
Perform BODY VERIFICATION TEST - VER 1.
Yes
>> Go To 3
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 33
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