P1298

DTC P1298: ELD Circuit High Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

1. Start the engine, and let it idle.
2. Check the ELD in the DATA LIST with the HDS.

Is 0.2 A or less indicated?

YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the ELD and the PCM.

3. Turn the ignition switch OFF.
4. Disconnect the ELD 3P connector.
5. Turn the ignition switch ON (II).




6. Measure voltage between ELD 3P connector terminal No. 1 and body ground.

Is there battery voltage?

YES - Go to step 7.

NO - Repair open in the wire between the No. 18 ACG (15 A) fuse and the ELD, then go to step 14.

7. Turn the ignition switch OFF.




8. Connect ELD 3P connector terminal No. 3 to body ground with a jumper wire.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector E (31P).




11. Check for continuity between PCM connector terminal E18 and body ground.

Is there continuity?

YES - Go to step 12.

NO - Repair open in the wire between the PCM (E18) and the ELD, then go to step 14.




12. Check for continuity between ELD 3P connector terminal No. 2 and body ground.

Is there continuity?

YES - Go to step 13.

NO - Repair open in the wire between the ELD and G301, then go to step 14.

13. Replace the under-hood fuse/relay box.
14. Reconnect all connectors.
15. Turn the ignition switch ON (II).
16. Reset the PCM with the HDS.
17. Do the PCM idle learn procedure.
18. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - Go to step 19.

NO - Troubleshooting is complete.

19. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
20. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC P1298 is indicated, check for poor connections or loose terminals at the ELD and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.