Jeep Wrangler TJ 2006 Diagnostic Manual page 153

*4WD INDICATOR INOPERATIVE —
TEST
4 Turn the ignition off.
Disconnect the Transfer Case Switch harness connector.
Connect a jumper wire between cavity 1 and cavity 2.
Turn the ignition on.
With the DRBIII , read the 4WD Switch input.
Does the DRBIII display Closed?
Yes → Replace the Transfer Case Switch in accordance with the Service
No
5 Turn the ignition off.
Disconnect the Transfer Case Switch harness connector.
Disconnect the PCM C1 harness connector.
Measure the resistance of the Transfer Case Position Sensor Input circuit between
the T/Case Switch connector and the PCM C1 connector.
Is the resistance above 5.0 ohms?
Yes → Repair the Transfer Case Position Sensor Input circuit for an
No
6 Turn the ignition on.
With the DRBIII , select Body, MIC, then Inputs/Outputs.
Move the transfer case shift lever from the 2H to the 4H or 4L position.
Does the DRBIII display 4WD Switch Closed with the shift lever in the 4H or 4L
position?
Yes → Replace and configure the Instrument Cluster in accordance with
No
7 Turn the ignition off.
Disconnect the Transfer Case Switch harness connector.
Connect a jumper wire between cavity A and cavity B.
Turn the ignition on.
With the DRBIII , read the 4WD Switch input.
Does the DRBIII display Closed .
Yes → Replace the Transfer Case Switch in accordance with the Service
No
ACTION
Information.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 5
open.
Perform BODY VERIFICATION TEST - VER 1.
→ Repair the Transfer Case Switch Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 7
Information.
Perform BODY VERIFICATION TEST - VER 1.
→ Go To 8
INSTRUMENT CLUSTER
Continued
147
APPLICABILITY
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All
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All