Check for coutinuity between ECM/PCM connector terminal B13 and body ground. Is there continuity?
YES | - | Go to Step 26 .
NO | - | Repair open in the wire between the ECM/PCM (B13) and the alternator, then go to Step 18 .
Reconnect all connectors. Turn the ignition switch ON (II). Reset the ECM/PCM with the HDS. Do the ECM/PCM idle learn procedure. Start the engine. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam Hold the engine speed at 2,000 rpm (min −1 ) (in Park or neutral) for 1 minute. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P16BC is indicated, check for poor connections or loose terminals at the alternator and the ECM/PCM, 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/PCM if it does not have the latest software, or substitute a known-good ECM/PCM. Start the engine. Check under these conditions: A/C on Temperature control at maximum cool Blower fan at maximum speed Rear window defogger on Headlights on high beam Hold the engine speed at 2,000 rpm (min −1 ) (in Park or neutral) for 1 minute. Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated?
YES | - | If DTC P16BC is indicated, check for poor connections or loose terminals at the alternator and the ECM/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 ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. ■