Checking Wiring
-- Remove the engine control module. Refer to the service information for removal and installation procedures.
-- Using a multimeter, measure the resistance of the circuit between the power supply relay Power Supply Relay 2 (terminal 15) -J681- and the engine control module Engine Control Module (ECM) -J623-. Refer to the applicable wiring diagram.
| Power Supply Relay 2 (terminal 15) -J681- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical connector terminal or specified location |
|---|---|
| 2 | Engine Control Module (ECM) J623 fuse in the appropriate fuse holder. Refer to the appropriate wiring diagram. |
| 8 | Engine Control Module (ECM) J623 fuse in the appropriate fuse holder. Refer to the appropriate wiring diagram. |
| 6 | Vehicle Electrical System Control Module -J519- Refer to the appropriate wiring diagram. |
| 4 | Chassis ground |
Specified value: 1.5 Ω Max.
If the specification was not obtained:
-- Check the wires for a short circuit to each other, a short to battery voltage, and a short to ground.
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- Repair as necessary.
If no malfunction is found in the wiring and voltage supply was OK:
-- Replace the engine control module Power Supply Relay 2 (terminal 15) -J681-.