DTC P16BB: Alternator B Terminal Circuit Low Voltage Turn the ignition switch ON (II). Clear the DTC with HDS. 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. Is DTC P16BB indicated?
YES | - | Go to Step 7 .
NO | - | Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, and check the battery performance. ■
Check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box (+B line). Are the connections and terminals OK?
YES | - | Go to Step 8 .
NO | - | Repair the connectors or terminals, then go to Step 9 .
Check for an open in the wire between the alternator and the under-hood fuse/relay box at the starter subharness. Is the harness OK?
YES | - | Replace the alternator, then go to Step 9 .
NO | - | Repair open in the wire between the alternator and the under-hood fuse/relay box, then go to Step 9 .
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 (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 P16BB is indicated, check for poor connections or loose terminals at the alternator and the under-hood fuse/relay box, 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.■