B1425

DTC B1425: Side-Airbag Module (RH) (Squib) System Detected Open Circuit

CAUTION: If DTCs is set in the SRS-ECU, always diagnose the CAN main bus line.

Part 1:

Part 2:

DTC SET CONDITIONS
- These DTC are set when a fault is detected in the SRS-ECU. The most likely causes for this code to be set are shown in the table:

TROUBLESHOOTING HINTS
- Malfunction of the SRS-ECU

DIAGNOSIS

Required Special Tool:
- MB991958: Scan Tool (MUT-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: MUT-III USB Cable
- MB991910: MUT-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.




1. Connect scan tool MB991958. Refer to "How to connect the scan tool." Reading Diagnostic Trouble Codes
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the CAN bus line found to be normal?

YES: Go to Step 2.

NO: Repair the CAN bus line (Refer to Diagnosis). Component Tests and General Diagnostics




STEP 2. Recheck for diagnostic trouble code.
Check again if the DTC is set.

1. Erase the DTC.
2. Turn the ignition switch to the "ON" position.
3. Check if the DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.

Q: Is the DTCs set?

YES: Replace the SRS-ECU.

NO: There is an intermittent malfunction such as poor engaged connector(s) or open circuit (Refer to How to Cope with Intermittent Malfunction).