Jeep Wrangler TJ. Manual — part 42
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Door Ajar Switch harness connector.
Connect a jumper wire between the Door Ajar Switch Sense circuit and ground.
NOTE: This test will work for the Driver or Passenger Door Ajar Switch
Sense circuit.
Does the VF display illuminate?
All
Yes
→ Go To 5
No
→ Repair the Door Ajar Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Door Ajar Switch harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Door Ajar Switch Ground circuit.
NOTE: This test will work for the Driver or Passenger Door Ajar Switch.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Instrument Cluster in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Door Ajar Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
165
INSTRUMENT CLUSTER
*VF ODOMETER INOPERATIVE WITH DOOR OPEN —
Continued
Symptom:
*COURTESY LAMPS INOPERATIVE - ALL LAMPS
POSSIBLE CAUSES
FUSED B+ CIRCUIT OPEN
INSTRUMENT CLUSTER - COURTESY LAMP OPEN
COURTESY LAMP FEED CIRCUIT OPEN
INTERMITTENT CONDITION
TEST
ACTION
APPLICABILITY
1
Remove the dome lamp lens.
Remove and ensure the bulb is good.
Using a 12-volt test light connected to ground, check the Fused B+ circuit.
Does the test light illuminate brightly?
All
Yes
→ Go To 2
No
→ Repair the Fused B+ Circuit for an open condition.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the Instrument Cluster.
Connect a jumper wire between the Courtesy Lamp Feed Circuit and ground.
Observe the Dome Lamp.
Does the test light illuminate brightly?
All
Yes
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Remove the dome lamp bulb.
Disconnect the Instrument Cluster.
Connect a jumper wire between the Courtesy Lamp Feed Circuit in the Instrument
Cluster connector and ground.
Measure resistance of the Courtesy Lamp Feed Circuit from the Dome Lamp to the
Instrument Cluster connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Courtesy Lamp Feed Circuit for an open condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ The condition that caused this symptom is currently not present.
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced, pinched or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1.
166
INTERIOR LIGHTING
Symptom:
*COURTESY LAMPS ON AT ALL TIMES
POSSIBLE CAUSES
DRIVERS DOOR AJAR SWITCH
DRIVERS DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
PANEL LAMPS DIMMER SIGNAL CIRCUIT SHORT TO GROUND
MULTIFUNCTION SWITCH
DOOR AJAR SWITCH OPEN
PASSENGER DOOR AJAR SWITCH SENSE CIRCUIT SHORT TO GROUND
COURTESY LAMP DRIVER CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Close all the doors.
Turn the Panel Lamps Dimmer Switch to the MID position.
With the DRBIII
t, read the Electro/Mech Cluster, I/O’s.
Does the DRBIII
t read CLOSED?
All
Yes
→ Go To 2
No
→ Go To 6
2
Open the Drivers door.
Disconnect the Driver Door Ajar Switch connector.
With the DRBIII
t select: Body, Electro/Mech Cluster, Input/Output.
Read the: Drv Door Ajar Sw - state.
Does the DRBIII
t show: Open?
All
Yes
→ Replace the Drivers Door Ajar Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Driver Door Ajar Switch connector.
Disconnect the Instrument Cluster connector.
Measure resistance of the Driver Door Ajar Switch Sense Circuit from the door ajar
switch connector to ground.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Drivers Door Ajar Switch Sense Circuit for a short to
ground condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
167
INTERIOR LIGHTING
TEST
ACTION
APPLICABILITY
4
Turn the Panel Lamps Dimmer to the MID position.
Remove the Instrument Cluster.
Measure the resistance between ground and the Panel Lamps Dimmer Signal Circuit
in the C2 connector.
Is the resistance below 100.0 ohms?
All
Yes
→ Go To 5
No
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Instrument Cluster.
Disconnect the Multifunction Switch connector.
Measure the resistance of the Panel Lamps Dimmer Signal Circuit in the instrument
cluster connector to ground.
Is the resistance below 200.0 ohms?
All
Yes
→ Repair the Panel Lamps Dimmer Signal Circuit for a short to
ground condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
6
Close all the passenger doors.
With the DRBIII
t select: Body, Electro/Mech Cluster, Input /Output.
Read the, Pas Door Ajar Sw - state.
Remove the passenger door ajar switch and observe the DRBIII
t.
Did the DRBIII
t change states to read: Pas Door Ajar Sw: Open?
All
Yes
→ Replace the applicable open Door Ajar Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the passenger door ajar switch.
Disconnect the Instrument Cluster connector.
Measure the resistance of the Passenger Door Ajar Circuit in the Passenger Door
Ajar Switch connector.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Passenger Door Ajar Switch Sense Circuit for a short
to ground condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 8
8
Turn the Panel Lamps Dimmer to the MID position.
Disconnect the Instrument Cluster 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
condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
168
INTERIOR LIGHTING
*COURTESY LAMPS ON AT ALL TIMES —
Continued
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