Jeep Wrangler TJ 2006 Diagnostic Manual page 113

*NO RESPONSE FROM AIRBAG CONTROL MODULE —
TEST
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 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?
Yes → Go To 4
→ Repair the PCI Bus circuit for an open.
No
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.
Repair
ACTION
Perform __AIRBAG VERIFICATION TEST - VER 1.
Replace the Airbag Control Module (ACM) in accordance with the
Service Information.
Perform __AIRBAG VERIFICATION TEST - VER 1.
107
COMMUNICATION
Continued
APPLICABILITY
All
All