P31B7

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn power switch ON and wait at least 10 seconds.
2.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK SELF-DIAGNOSTIC RESULT IN VCM

With CONSULT
Check self-diagnostic result in "EV/HEV".
Is any CAN error (U1000 excluded) other than DTC P31B7 detected?
YES- GO TO 2.
NO- GO TO 3.

2. REPLACE VCM

With CONSULT
1.Replace VCM. Refer to "Removal and Installation" Removal And Installation.
2.Perform DTC confirmation procedure again. Refer to "DTC Logic" .
Is DTC P31B7 detected again?
YES- Replace air bag diagnosis sensor unit. Refer to "Removal and Installation" Removal And Installation.
NO- INSPECTION END

3. REPLACE AIR BAG DIAGNOSIS SENSOR UNIT

With CONSULT
1.Replace air bag diagnosis sensor unit. Refer to "Removal and Installation" Removal And Installation.
2.Perform DTC confirmation procedure again. Refer to "DTC Logic" .
Is DTC P31B7 detected again?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- INSPECTION END