|
|
Content .. 1011 1012 1013 1014 ..
TROUBLESHOOTING SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-104 CAUTION If diagnosis code B1443 is set in the SRS-ECU, OPERATION The SRS-ECU judges how severe a collision is by DIAGNOSIS CODE SET CONDITIONS This diagnosis code is set if the curtain air bag PROBABLE CAUSES • Damaged wiring harnesses or connectors • Short to the power supply in the curtain air bag module (squib) (RH) harness • Malfunction of the SRS-ECU DIAGNOSIS PROCEDURE STEP 1. MUT-III CAN bus diagnostics Use the MUT-III to diagnose the CAN bus lines. Q: Is the check result normal? YES : Go to Step 2. NO : Repair the CAN bus line (Refer to GROUP STEP 2. Check whether the diagnosis code is Check again if the diagnosis code is set. not reset. Q: Is the diagnosis code set? YES : Go to Step 3. NO : There is an intermittent malfunction such as STEP 3. Check the curtain air bag module (RH). (2) Disconnect curtain air bag module (RH) connector G-04. Use a flat-tipped screwdriver to (3) Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991884). (4) Connect special tool (MB991884) to the G-04 harness side connector. (5) Connect the negative battery terminal. diagnosis code. Q: Is diagnosis code B1443 set? YES : Go to Step 4. NO : Replace the curtain air bag module (RH) ). AC302575AD G-04 (B) Connector: G-04 Harness side Roof centre duct AC208384AM G-04 Flat-tip screw Locking button G-04 AC301553AI MB991865 ΩΩ MB991884 G-04 Harness side connector |