Jeep Wrangler TJ. Manual — part 26
TEST
ACTION
APPLICABILITY
5
If there are no possible causes remaining, view repair.
All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
101
CHIME
*CHIME SOUNDS WITH DRIVER SEAT BELT FASTENED —
Continued
Symptom:
*CHIME SOUNDS WITH DRIVER’S DOOR OPEN, KEY REMOVED
POSSIBLE CAUSES
KEY-IN IGNITION SWITCH SHORTED
KEY-IN IGNITION SW SENSE SHORT TO GROUND
INSTRUMENT CLUSTER - KEY-IN IGNITION SHORTED
TEST
ACTION
APPLICABILITY
1
Disconnect the Ignition Switch connector.
Did the chime turn off?
All
Yes
→ Check the Ignition Lock Cylinder for damage. If OK replace the
Ignition Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn ignition off.
Disconnect the Ignition Switch connector.
Remove the Instrument Cluster from the I/P.
Measure the resistance of the Key-in Ignition Switch Sense circuit to ground at the
Instrument Cluster C2 connector.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Key-In Ignition Switch Sense wire for a short to
ground..
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
If there are no possible causes remaining, view repair.
All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
102
CHIME
Symptom:
*NO RESPONSE FROM AIRBAG CONTROL MODULE
POSSIBLE CAUSES
CHECKING FOR VOLTAGE AT ACM
GROUND CIRCUIT OPEN
OPEN PCI BUS CIRCUIT
AIRBAG CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Ensure that the battery is fully charged.
WARNING: TO AVOID PERSONAL INJURY OR DEATH, TURN THE IGNI-
TION OFF, DISCONNECT THE BATTERY AND WAIT TWO MINUTES BE-
FORE PROCEEDING.
Disconnect the ACM harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Turn the ignition on and then reconnect the Battery.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output (Run) Circuit and the Fused Ignition Switch Output (Run/Start) Circuit at
the ACM connector.
NOTE: One open circuit will not cause a NO RESPONSE condition.
Is the test light illuminated on both circuits?
All
Yes
→ Go To 2
No
→ Repair the Fused Ignition Switch Output (Run) and Fused
Ignition Switch Output (Run/Start) circuits for an open.
Perform __AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting airbag system components, the ignition must be
turned off and the battery must be disconnected.
2
NOTE: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
WARNING: To avoid personal injury or death, turn the ignition off, discon-
nect the Battery and wait 2 minutes before proceeding.
Disconnect the Airbag Control Module harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Using a 12-volt test light connected to 12-volts, probe the ground circuit.
Is the test light illuminated?
All
Yes
→ Go To 3
No
→ Repair the ground circuit for an open.
Perform __AIRBAG VERIFICATION TEST - VER 1.
Note: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
103
COMMUNICATION
TEST
ACTION
APPLICABILITY
3
Note: Ensure there is PCI Bus communication with other modules on the
vehicle before proceeding. If not, refer to the symptom list from the menu
and repair as necessary.
Turn the ignition off and wait 2 minutes before proceeding.
Disconnect the Airbag Control Module harness connector.
Connect the appropriate Load Tool ACM Adapter to the ACM connector.
Use Scope input cable CH7058, Cable to Probe adapter CH7062, and the red and
black test probes.
Connect the scope input cable to the channel one connector on the DRB. Attach the
red and black leads and the cable to probe adapter to the scope input cable.
With the DRBIII
t select Pep Module Tools.
Select lab scope.
Select Live Data.
Select 12 volt square wave.
Press F2 for Scope.
Press F2 and use the down arrow to set voltage range to 20 volts. Press F2 again
when complete.
Connect the Black lead to the chassis ground. Connect the Red lead to the PCI Bus
circuit in the ACM connector.
Turn the ignition on.
Observe the voltage display on the DRB Lab Scope.
Does the voltage pulse from 0 to approximately 7.5 volts?
All
Yes
→ Go To 4
No
→ Repair the PCI Bus circuit for an open.
Perform __AIRBAG VERIFICATION TEST - VER 1.
NOTE: When reconnecting Airbag system components, the ignition must be
turned off and the battery must be disconnected.
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Airbag Control Module (ACM) in accordance with the
Service Information.
Perform __AIRBAG VERIFICATION TEST - VER 1.
104
COMMUNICATION
*NO RESPONSE FROM AIRBAG CONTROL MODULE —
Continued
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