DTC B12D0: Power Control Unit IG1A Circuit Error

DTC (Power Control Unit)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   - 2. Press the engine start/stop button to select the ON mode.

   - 3. Wait 10 seconds.

   - 4. Press the engine start/stop button to select the OFF mode.

   - 5. Wait 5 seconds.

   - 6. Check for DTCs with the HDS.

   DTC Description	DTC
   B12D0 Power Control Unit IG1A Circuit Error

   Is DTC B12D0 indicated?

   YES 

   Go to step 2 below.

   NO 

   Intermittent failure, the system is OK at this time.

2. Determine possible failure area (IG1a relay circuit ON problem, IG1a relay circuit OFF problem)

   -1. Press the engine start/stop button to select the ON mode

   - 2. Select KEYLESS ACCESS CONTROL from the ONE-PUSH START system select menu with the HDS, and enter DATA LIST.

   One-Push - KEYLESS ACCESS CONTROL UNIT - DATA LIST

   - 3. Check the IG1A with the HDS.

   Is there battery voltage?

   YES 

   Go to step 3 below.

   NO 

   Go to step  4

3. Under-dash sub fuse/relay box test (IG1a relay circuit)

   -1. Do the under-dash sub relay box test (IG1a relay circuit).

   Is IG1a relay circuit OK?

   YES 

   Repair a short to power in the wire.

   NO 

   Faulty IG1a relay circuit, replace the under-dash sub relay box .

4. Under-dash sub fuse/relay box test (IG1a relay circuit)

   -1. Do the under-dash sub relay box test (IG1a relay circuit).

   Is IG1a relay circuit OK?

   YES 

   Repair an open or high resistance in the wire.

   NO 

   Faulty IG1a relay circuit, replace the under-dash sub relay box .