Dodge Dakota (R1). Manual — part 61
Symptom:
*COURTESY LAMP INOPERATIVE-ALL LAMPS
POSSIBLE CAUSES
COURTESY LAMP SWITCH SENSE CIRCUIT OPEN
COURTESY LAMP DRIVER CIRCUIT SHORT TO VOLTAGE
INOPERATIVE BULBS
OPEN FUSED B+ CIRCUIT
INTERIOR LAMP DEFEAT CIRCUIT SHORT TO GROUND
CENTRAL TIMER MODULE
HEADLAMP SWITCH
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Connect a jumper wire between ground and the Courtesy Lamp Switch Sense Circuit
of the Headlamp Switch harness connector.
Did any of the Courtesy Lamps illuminate?
All
Yes
→
No
→
Repair the Courtesy Lamp Switch Sense Circuit for an open
condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Disconnect the Central Timer Module harness connector.
Measure the resistance of the Courtesy Lamp Driver Circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Courtesy Lamp Driver Circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
3
Remove and inspect the inoperative bulbs
Are the inspected bulbs OK?
All
Yes
→
No
→
Replace the inoperative bulbs.
Perform BODY VERIFICATION TEST - VER 1.
4
Measure the voltage of the Fused B+ Circuit to one of the Courtesy Lamps.
Is the voltage above 10.0 volts?
All
Yes
→
No
→
Repair the open Fused B+ Circuit.
Perform BODY VERIFICATION TEST - VER 1.
241
INTERIOR LIGHTING
TEST
ACTION
APPLICABILITY
5
Disconnect the Headlamp Switch harness connector.
Measure the resistance of the Interior Lamp Defeat Circuit between the Headlamp
Switch harness and the Central Timer Module harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Interior Lamp Defeat Circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the Headlamp Switch harness connector. Remove the Headlamp Switch.
Turn the Courtesy Lamp Control Switch to on.
Measure resistance between the Interior Lamp Defeat Circuit and the Courtesy
Lamp Switch Sense Circuit of the Headlamp Switch connector - component side.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.
242
INTERIOR LIGHTING
*COURTESY LAMP INOPERATIVE-ALL LAMPS —
Continued
Symptom:
*COURTESY LAMPS STAY ON
POSSIBLE CAUSES
COURTESY LAMP SWITCH SENSE CIRCUIT SHORT TO GROUND
COURTESY LAMP DRIVER CIRCUIT SHORT TO GROUND
COURTESY LAMP OUTPUT CIRCUIT SHORT TO GROUND
HEADLAMP SWITCH
CENTRAL TIMER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Are the Courtesy Lamps on?
All
Yes
→
No
→
Repair the Courtesy Lamp Switch Sense Circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Central Timer Module harness connector.
Are the Courtesy Lamps on?
All
Yes
→
Repair the Courtesy Lamp Output Circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→
3
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Disconnect the Central Timer Module harness connector.
Measure the resistance between ground and the Courtesy Lamp Driver Circuit.
Is the resistance below 100.0 ohms?
All
Yes
→
Repair the Courtesy Lamp Driver Circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→
4
Turn the ignition off.
Disconnect the Headlamp Switch harness connector and remove the Headlamp
Switch.
Turn the Headlamp Switch off. Turn the Courtesy Lamp Switch off.
Measure resistance between the Interior Lamp Defeat Circuit and the remaining
Headlamp Switch connector terminals.
Measure resistance between the Courtesy Lamp Switch Sense Circuit and the
remaining terminals.
Is the resistance below 100.0 ohms for any of the measurements?
All
Yes
→
Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
243
INTERIOR LIGHTING
Symptom:
*COURTESY/DOME LAMPS INOPERATIVE WITH HEADLAMP
SWITCH
POSSIBLE CAUSES
OPEN GROUND CIRCUIT
COURTESY LAMP SWITCH OUTPUT CIRCUIT OPEN
HEADLAMP SWITCH
CENTRAL TIMER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Using a 12 volt test light connected to 12 volts, check the ground circuit of the
Headlamp Switch harness connector.
Does the test light come on?
All
Yes
→
No
→
Repair the open ground circuit.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Headlamp Switch harness connector.
Disconnect the Central Timer Module harness connector.
Measure the resistance of the Courtesy Lamp Switch Output Circuit between the
Central Timer Module harness connector and the Headlamp Switch harness connec-
tor.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Courtesy Lamp Output Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Headlamp Switch harness connector and remove the Headlamp
Switch.
Turn the Courtesy Lamp Switch to the on position.
Measure resistance between the Courtesy Lamp Switch Sense Circuit and the
Ground Circuit of the Headlamp Switch connector, component side.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace the Central Timer Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→
Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.
244
INTERIOR LIGHTING
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