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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-246 DTC SET CONDITIONS • This DTC is set under one of the following cases while the SRS-ECU is monitoring the passen- • When a short circuit occurs in the passen- ger’s seat belt warning light drive circuit. • When a malfunction is detected in the output transistor inside the SRS-ECU. However, if the vehicle condition returns to normal, . TROUBLESHOOTING HINTS • Damaged wiring harnesses or connectors • 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 CAUTION To prevent damage to scan tool MB991958, always turn the scan tool ." (2) Turn the ignition switch to the "ON" position. Q: Is the CAN bus line found to be normal? YES : Go to Step 2. AC305412 AB MB991910 DATA LINK CONNECTOR MB991824 MB991827 |