GND SHORT-CIRCUIT OF BAG (DTC CODE B0102 / DIAGNOSIS MONITOR CODE 4)

1. Turn the starter key to the "LOCK" position. After a lapse of more than 90 seconds, remove the steering column cover and detach the yellow connector of the spiral cable (SRC) at the lower part of the steering column.
   
2. Using the diagnosis monitor, delete the past malfunction code and then output the present malfunction code again.
   

   Standard
   Output of diagnosis monitor code 3: Proceed to steps under YES.
   Output of diagnosis monitor code 4: Proceed to steps under NO.

NO Go to [3]Measuring continuity between terminals.

YES Go to [2]Measuring continuity between terminals.

1. Turn the starter key to the "LOCK" position, wait for more than 90 seconds, and remove the air bag module.
   
2. Measure continuity between the terminal of the yellow connector on the inflator side of the steering column spiral cable and the body GND.
   

   Standard: Not Conducting

NO Spiral cable abnormality

YES Air bag inflator abnormality

1. Turn the starter key to the "LOCK" position, wait for more than 90 seconds, and disconnect the connection of the yellow connector of the air bag ECU.
   
2. Measure continuity between the terminal of the yellow connector of the cab main harness at the lower part of the steering column and the body GND.
   

   Standard: Not Conducting

NO Cab main harness abnormality

YES Air bag ECU abnormality

1. Confirm the DTC B0102 is inactive

   • Start the engine and let it idling condition.
   • Verify the DTC B0102 is inactive.

   

2. DTC Clear

   • Clear the DTC with Hino DX
   • Confirm the same DTC is not reoccurred

   

B0102 is reoccur: Return to first process Other DTC appear: Refer to concerned Trouble shooting

Complete