Check for continuity between ECM connector No. 1 terminal No. 37 and body ground. Is there continuity?
YES | - | Repair short in the wire between the No. 2 (7.5 A) fuse and ECM connector No. 1 terminal No. 37. Also replace the No. 2 (7.5 A) fuse in the multi fuse/relay box, then go to Step 14 .
NO | - | Go to Step 19 .
Reconnect all connectors. Turn the ignition switch ON (II). Reset the ECM with the HDS. Do the FUEL HEATER ON/OFF in the INSPECTION MENU with the HDS. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P1030 is indicated, check for poor connections or loose terminals at the fuel heater relay and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | Troubleshooting is complete.■
Update the ECM if it does not have the latest software, or substitute a known-good ECM. Do the FUEL HEATER ON/OFF in the INSPECTION MENU with the HDS. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P1030 is indicated, check for poor connections or loose terminals at the fuel heater relay and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. ■