Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- CHECK FOR AN ACTIVE DTC
- Ignition on, engine not running.
- With the scan tool, erase DTCs in the Powertrain Control Module (PCM).
- Perform several ignition cycles leaving the ignition on for at least 10 seconds then off for 10 seconds.
- With the scan tool, read the PCM DTCs.
Did this DTC return?
Yes
- Go To 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT DTC .
- CHECK THE (A203) GLOW PLUG 2 CONTROL CIRCUIT FOR A SHORT TO GROUND
- Turn the ignition off.
- Measure the resistance between ground and the (A203) Glow Plug 2 Control circuit at the Glow Plug 2 harness connector.
Is the resistance above 10k Ohms?
Yes
- Go To 3
No
- Repair the (A203) Glow Plug 2 Control circuit for a short to ground.
- Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
- CHECK THE GLOW PLUG 2 FOR PROPER OPERATION
- Turn the ignition off.
- Replace the Glow Plug in accordance with the service information.
- Turn the ignition on.
- With the scan tool, erase PCM DTCs.
- Perform several ignition key cycles leaving the ignition on for at least 10 seconds per cycle.
- With the scan tool, read PCM DTCs.
Does the scan tool display this DTC?
Yes
- Go To 4
No
- Test complete.
- Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
- CHECK THE GLOW PLUG MODULE FOR PROPER OPERATION
- Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Glow Plugs and the Glow Plug Module.
- Look for any chafed, pierced, pinched, or partially broken wires.
- Look for broken, bent, pushed out or corroded terminals.
- Perform any Technical Service Bulletins that may apply.
Were any problems found?
Yes
- Repair as necessary.
- Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .
No
- Replace the Glow Plug Module in accordance with the service information.
- Perform the PCM VERIFICATION TEST. Refer to PCM VERIFICATION TEST .