DTC P16BB (1.5 L Engine)

DTC P16BB  : Alternator B Terminal Circuit Low Voltage

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode.

   -4. Start the engine.

   -5. Check under these conditions:

   • A/C on
   • Temperature control at maximum cool
   • Blower fan at maximum speed
   • Headlights on high beam
   • Rear window defogger on

   -6. Hold the engine speed at 2, 000 rpm without load (in P or N) for 1 minute.

   -7. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P16BB Alternator B Terminal Circuit Low Voltage

   Is DTC P16BB indicated?

   YES 

   Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the alternator and 12 volt battery. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot . Also check the 12 volt battery performance .

2. ACG +B terminal check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Check for poor connections or loose terminals at the alternator and the 12 volt battery (ACG +B line).

   Are the connections and terminals OK?

   YES 

   Go to step 3.

   NO 

   Repair the connections or the terminals.

3. Open wire check (ACG +B line)

   -1. Check for an open in the wire between the alternator and the 12 volt battery at the engine harness (ACG +B line).

   Is the harness OK?

   YES 

   Replace the alternator .

   NO 

   Repair an open in the ACG +B wire between the alternator and the 12 volt battery.