Checking Wiring
-- Remove the Engine Control Module -J623-. Refer to the Repair Information.
-- Using a multimeter, check the Data Bus On Board Diagnostic Interface -J533- electrical harness connector to the Engine Control Module -J623- electrical harness connector T94 for short to ground, high resistance or an open circuit. Refer to appropriate Wiring Diagrams for pin locations.
| Data Bus On Board Diagnostic Interface -J533- Electrical Harness Connector Terminals | Engine Control Module -J623- Electrical Connector T94 Terminals |
|---|---|
| 18 (CAN Bus Low) | 67 |
| 19 (CAN Bus High) | 68 |
Specified value: 1.5 Ω Max.
If the specified value was Not obtained:
-- Check the wiring connection for short to ground, high resistance or an open circuit.
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and the Terminal Resistance was Not OK:
-- Replace the Engine Control Module -J623-. Refer to the Repair Information.
If no malfunction is found in the wiring and the Terminal Resistance was OK:
-- Replace the Data Bus On Board Diagnostic Interface -J533-.