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SRS AIR BAG DIAGNOSIS TSB Revision SUPPLEMENTAL RESTRAINT SYSTEM(SRS) 52B-49 CIRCUIT OPERATION • The SRS-ECU judges how severe a collision is DTC SET CONDITIONS • This DTC is output if a poor connection at the TROUBLESHOOTING HINTS • Damaged connectors • Malfunction of the side air bag module (LH) • Malfunction of the SRS-ECU DIAGNOSIS Required Special Tools: • MB991502: Scan Tool (MUT-II) • MB991223 (MB991222): Harness set (Probe) STEP 1. Check the side impact sensor (LH) line at the SRS- backprobing. • Voltage should be 9 volts or more (5)Check the continuity between terminal 3 and the ground by backprobing. • Should be less than 2 ohm. Q: Does the voltage meet the specifications or is the resistance less than 2 ohm? NO : Go to Step 2. AC003696AB D-20 CONNECTOR AC003697AB D-20 CONNECTOR |