Jeep Wrangler TJ. Manual — part 41
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Seat Belt Switch Sense circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Seat Belt Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the Seat Belt Switch harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Seat Belt Switch Ground circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Seat Belt Switch in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Seat Belt Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
161
INSTRUMENT CLUSTER
*SEAT BELT INDICATOR NOT OPERATING PROPERLY —
Continued
Symptom:
*SPEEDOMETER INACCURATE OR INOPERATIVE
POSSIBLE CAUSES
PCM DTC PRESENT
INCORRECT CONFIGURATION
INTERMITTENT CONDITION
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, read DTCs.
Are any Powertrain DTCs present?
All
Yes
→ Refer to DRIVEABILITY for the related symptom(s).
No
→ Go To 2
2
With the DRBIII
t, ensure that the Instrument Cluster is correctly configured for Tire
Size, Axle Type, and Transfer Case Type.
Are the Instrument Cluster configurations correct?
All
Yes
→ Go To 3
No
→ Using the DRBIIIt, select Miscellaneous, Configure Cluster for
the correct Tire Size, Axle Type, and Transfer Case Type. With the
DRBIII
t, erase DTCs.
3
Turn the ignition off.
Perform the Instrument Cluster self test.
Press and hold the Trip Reset button.
Turn the ignition on.
Observe the Speedometer during the self test.
NOTE: The self test can also be initiated using the DRBIII
t.
The Speedometer should pause at the following calibration points:
Cal Point 1: 20 MPH (40km/h Canada/BUX) (40 MPH Aus/Japan)
Cal Point 2: 55 MPH (80 km/h Canada/BUX) (80 MPH Aus/Japan)
Cal Point 3: 75 MPH (120 km/h Canada/BUX) (120 MPH Aus/Japan)
Did the Speedometer pause at the correct calibration points?
All
Yes
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
No
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
162
INSTRUMENT CLUSTER
Symptom:
*VF DISPLAY INOPERATIVE
POSSIBLE CAUSES
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure that all other Instrument Cluster functions operate properly.
Turn the ignition off.
Perform the Instrument Cluster Self Test.
Did any or all of the VF display fail to operate?
All
Repair
Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
163
INSTRUMENT CLUSTER
Symptom:
*VF ODOMETER INOPERATIVE WITH DOOR OPEN
POSSIBLE CAUSES
DEFECTIVE FUSE
DOOR AJAR SENSE CIRCUIT SHORT TO VOLTAGE
AJAR SWITCH
DOOR AJAR SWITCH SENSE CIRCUIT OPEN
DOOR AJAR SWITCH GROUND CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Inspect the #4 fuse in the Fuse Block.
If the fuse is open, replace with proper rated fuse.
NOTE: Ensure that the ignition is in the off position.
Open the door(s).
Inspect the #4 fuse in the Fuse Block.
Is the fuse open?
All
Yes
→ Go To 2
No
→ Go To 3
2
Turn the ignition off.
Disconnect the Instrument Cluster C2 harness connector.
Check connectors - Clean/repair as necessary.
Measure the voltage between the Door Ajar Switch Sense circuit and ground.
NOTE: This test will work for either the Driver or Passenger Door Ajar
Switch Sense circuit.
Is there any voltage present?
All
Yes
→ Repair the Door Ajar Switch Sense circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Door Ajar Switch harness connector.
NOTE: This test will work for the Driver or Passenger Door Ajar Switch.
Connect a jumper wire between cavity 1 and cavity 3.
Does the VF Odometer illuminate?
All
Yes
→ Replace the inoperative Door Ajar Switch in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
164
INSTRUMENT CLUSTER
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