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 and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK FOR CAN IHS BUS OR CAN C BUS DTCS SET IN THE BODY CONTROL MODULE
Are there any CAN IHS Bus or CAN C Bus DTCs set in the Body Control Module?

Yes
- Diagnose the appropriate DTC in the Body Control Module before continuing. Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX .
No
- Go To 3
CHECK THE CAN IHS BUS (+) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the ICS Switch Bank Module harness connector.
3. Disconnect the BCM C4 harness connector.
4. Measure the resistance of the CAN IHS Bus (+) circuit between the ICS Switch Bank Module and the BCM C4 harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the CAN IHS Bus (+) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 3.2L .
CHECK THE CAN IHS BUS (-) CIRCUIT FOR AN OPEN/HIGH RESISTANCE
1. Measure the resistance of the CAN IHS Bus (-) circuit between the ICS Switch Bank Module and the BCM C4 harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Replace the Integrated Center Stack (ICS) Switch Bank Module in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 3.2L .
  No
  - Repair the CAN IHS Bus (-) circuit for an open or high resistance.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 3.2L .