DTC Troubleshooting: P16BB (116)

DTC P16BB:

Alternator B Terminal Circuit Low Voltage

1.	Turn the ignition switch ON (II).

2.	Clear the DTC with HDS.

3.	Start the engine.

4.	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

5.	Hold the engine speed at 2,000 rpm (min-1) (in Park or neutral) for 1 minute.

6.	Check for Temporary DTCs or DTCs with the HDS. Is DTC P16BB indicated? YES - Go to 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.n

7.	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 8. NO - Repair the connectors or terminals, then go to 9.

8.	Check for an open in the wire between the alternator and under-hood fuse/relay box at the starter subharness. Is the harness OK? YES - Replace the alternator, then go to 9. NO - Repair open in the wire between the alternator and the under-hood fuse/relay box, then go to 9.

9.	Turn the ignition switch ON (II).

10.	Reset the ECM/PCM with the HDS.

11.	Do the ECM/PCM idle learn procedure.

12.	Start the engine.

13.	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

14.	Hold the engine speed at 2,000 rpm (min-1) (in Park or neutral) for 1 minute.

15.

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 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Troubleshooting is complete.n