Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
CHECK (F929) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT VOLTAGE AT THE ORC HARNESS CONNECTOR
NOTE:
Using the wiring diagrams as a guide, check all appropriate fuses before proceeding with this diagnostic procedure. Repair as necessary.

NOTE:
Probing of the circuit cavities at the ORC Module C1-A, C1-B, or C2-A body harness connectors is only to be done with a approved test lead from the (special tool #10159, Test Leads, Dedicated). Or a comparable test lead to prevent vehicle wiring harness connector damage during diagnostic procedures.

WARNING:
Turn the ignition off disconnect the 12-volt battery and wait two minutes before proceeding. Failure to follow these instructions may result in possible serious or fatal injury.
1. Disconnect the ORC harness connectors.
2. Turn the ignition on.
3. Using the appropriate test lead, measure the voltage of the (F929) Fused Ignition Switch Output (Run) circuit between the ORC C1 harness connector and ground.
  Is the voltage above 6.5 volts?
  
  Yes
  - Replace the Occupant Restraint Controller (ORC) in accordance with Service Information. (Refer to REMOVAL, ORC ).
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .
  No
  - Using the wiring diagrams as a guide, repair the (F929) Fused Ignition Switch Output (Run) circuit for an open or short to ground.
  - Perform the RESTRAINTS SYSTEM VERIFICATION TEST. Refer to RESTRAINTS SYSTEM VERIFICATION TEST .