Turn the ignition switch ON (II). Do the gauge self-diagnostic procedure. Does the MIL indicator flash?
YES | - | Go to Step 3 .
NO | - | Substitute a known-good gauge assembly, and recheck. If the MIL circuit is OK, replace the original gauge assembly.■
Turn the ignition switch OFF. Turn the ignition switch ON (II), and watch the MIL. Does the MIL stay off?
YES | - | Go to Step 16 .
NO | - | Go to Step 5 .
Turn the ignition switch OFF. Turn the ignition switch ON (II), and watch the MIL. Does the MIL stay on or flash?
YES | - | Go to Step 7 .
NO | - | The MIL circuit is OK.■
Turn the ignition switch OFF. Connect the HDS. Turn the ignition switch ON (II), and read the HDS. Does the HDS communicate with the ECM?
YES | - | Go to Step 10 .
NO | - | Go to ‘‘DLC Circuit Troubleshooting''. If no problem is found in the DLC troubleshooting, go to step 20.
Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | Go to the indicated DTC's troubleshooting.■
NO | - | Go to Step 11 .
Check the MIL in the DATA LIST with the HDS. Is ON indicated?
YES | - | Go to Step 12 .
NO | - | Substitute a known-good gauge assembly, and recheck. If the MIL circuit is OK, replace the original gauge assembly.■
Check the SCS in the DATA LIST with the HDS. Is a short indicated?
YES | - | Go to Step 13 .
NO | - | Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
Turn the ignition switch OFF, and wait 30 seconds. Disconnect ECM connector No. 2 (58P). Check for continuity between ECM connector No. 2 terminal No. 20 and body ground. Is there continuity?
YES | - | Repair short in the wire between the DLC and ECM connector No. 2 terminal No. 20.■
NO | - | Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
Try to start the engine. Does the engine start?
YES | - | Go to Step 17 .
NO | - | Go to Step 21 .
Turn the ignition switch OFF. Connect the HDS. Turn the ignition switch ON (II), and read the HDS. Does the HDS communicate with the ECM?
YES | - | Go to Step 20 .
NO | - | Go to ‘‘DLC Circuit Troubleshooting''. If no problem is found in the DLC troubleshooting, go to Step 20 .
Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS. Is DTC U0073 and/or U0155 indicated?
YES | - | Go to the indicated DTC's troubleshooting.■
NO | - | Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
Press the inertia switch button. Try to start the engine. Does the engine start?
YES | - | Troubleshooting is complete.■
NO | - | Go to Step 23 .
Check PGM-FI main relay 1. Is PGM-FI main relay 1 OK?
YES | - | Go to Step 24 .
NO | - | Replace PGM-FI main relay 1.■
Inspect No. 8 FI ECU (ECM) (20 A) fuse inthe under-hood fuse/relay box. Is the fuse OK?
YES | - | Go to Step 31 .
NO | - | Go to Step 25 .
Disconnect PGM-FI main relay 1. |