Dodge Dakota (ND). Manual — part 288
B1637-RIGHT HI BEAM 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 Highbeam Headlamps activated.
•
Set Condition:
•
When the FCM detects a High condition.
Possible Causes
(L34) RIGHT HIGHBEAM OUTPUT 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 Highbeam Headlamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1637-RIGHT HI BEAM 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 - VER 1.
2.
(L34) RIGHT HIGHBEAM OUTPUT CIRCUIT
Turn the ignition off.
Disconnect the FCM C2 harness connector.
Measure the resistance between ground and the Right Highbeam Out-
put 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 - VER 1.
No
>> Repair the (L34) Right Highbeam Output circuit for a short
to ground condition.
Perform the BODY VERIFICATION TEST - VER 1.
8L - 14
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B1638-RIGHT HI BEAM CONTROL CIRCUIT HIGH
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 15
B1638-RIGHT HI BEAM 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 Headlamps activated.
•
Set Condition:
•
When the FCM detects a HIGH condition.
Possible Causes
(L34) HIGH BEAM 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 Headlamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1638-RIGHT HI BEAM 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 - VER 1.
2.
(L34) HIGH BEAM CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM C2 harness connector.
Measure the resistance of the (L34) High Beam Control circuit.
Is the resistance above 5.0 ohms?
Yes
>> Repair the (L34) High Beam Control circuit for a short to
battery condition.
Perform the BODY VERIFICATION TEST - VER 1.
No
>> Replace the Front Control Module (FCM) in accordance
with the service information.
Perform the BODY VERIFICATION TEST - VER 1.
8L - 16
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
ND
B163B-FRONT LEFT TURN CONTROL CIRCUIT LOW
ND
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 17
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