DTC Troubleshooting: P1298 (20)
  1. Check for continuity between ELD 3P connector terminal No. 2 and body ground.
Is there continuity?
YES -
Go to Step 11 .
NO -
Repair open in the wire between the ELD and G301, then go to Step 12 .
  1. Replace the under-hood fuse/relay box.
  1. Reconnect all connectors and the battery.
  1. Turn the ignition switch ON (II).
  1. Reset the ECM with the HDS.
  1. Do the ECM idle learn procedure.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1298 indicated?
YES -
Go to Step 17 .
NO -
Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■
  1. Update the ECM if it does not have the latest software, or substitute a known-good ECM.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P1298 indicated?
YES -
Check for poor connections or loose terminals at the ELD and the ECM. If the ECM was updated, substitute a known-good ECM, then recheck. If the ECM was substituted, go to Step 1 .
NO -
If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■