Inspection and Verification

INSPECTION AND VERIFICATION

1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage.

VISUAL INSPECTION CHART

Electrical
- Battery junction box (BJB) fuse(s):
- MIDI 80A (no communication with power steering control module)
- 5 (10A) (no communication with PCM, traction battery control module [TBCM] [Hybrid only])
- 6 (5A) (no communication with ABS module [Hybrid only])
- 8 (5A) (no communication with transmission control module [TCM] [Hybrid only])
- 9 (50A) (no communication with ABS module [Hybrid only])
- 15 (50A) (no communication with TBCM [Hybrid only])
- 18 (20A) (no communication with ABS module [Escape and Mariner only])
- 18 (50A) (no communication with ABS module [Hybrid only])
- 23 (5A) (no communication with TBCM [Hybrid only])
- 27 (10A) (no communication with TCM [Hybrid only])
- 29 (15A) (no communication with PCM)

- Smart junction box (SJB) fuse(s):
- 5 (10A) (no communication with the SJB)
- 11 (10A) (no communication with four wheel [4WD] control module)
- 14 (10A) (no communication with front control interface module [FCIM], front display interface module [FDIM], satellite radio receiver)
- 15 (10A) (no communication with electronic automatic temperature control [EATC] or electronic manual temperature control [EMTC] module)
- 20 (15A) (no power to scan tool)
- 26 (10A) (no communication with TBCM [Hybrid only])
- 27 (10A) (no communication with TCM [Hybrid only])
- 29 (5A) (no communication with instrument cluster)
- 32 (10A) (no communication with restraints control module [RCM])
- 34 (5A) (no communication with ABS module [Escape and Mariner only])
- 35 (10A) (no communication with parking aid module, 4WD control module)
- 37 (10A) (no communication with EATC or EMTC module)
- 39 (20A) (no communication with audio unit)
- 43 (10A) (no communication with the instrument cluster)

- Data link connector (DLC)
- Wiring, terminals or connectors

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the DLC.

NOTE: The vehicle communication module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:
- Check the VCM connection to the vehicle.
- Check the scan tool connection to the VCM.
- GO to Pinpoint Test R, to diagnose no power to the scan tool. Test R: No Power To The Scan Tool

5. NOTE: During the network test, the scan tool will first attempt to communicate with the PCM, after establishing communication with the PCM, the scan tool will then attempt to communicate with all other modules on the vehicle.

Carry out the network test.
- If the network test passes, retrieve and record the continuous memory diagnostic trouble codes (DTCs) and proceed to Step 6.
- If the network test fails, GO to Symptom Chart to identify the module not communicating. Symptom Related Diagnostic Procedures

6. If the DTCs retrieved are related to the concern, go to DTC Charts. Follow the non-network DTC diagnostics (B-codes, C-codes, P-codes) prior to the network DTC diagnostics (U-codes). For all other DTCs, refer to Body Control Systems (Multifunction Electronic Control Module). Module Communications Network
7. If no DTCs related to the concern are retrieved, GO to Symptom Chart. Symptom Related Diagnostic Procedures