|
|
TROUBLESHOOTING SUPPLEMENTAL RESTRAINT SYSTEM (SRS) 52B-47 PROBABLE CAUSES • Damaged harness wires and connectors • Short to the power supply in the passenger's (front) air bag module (squib) harness • Malfunction of the passenger’s air bag cut off switch • Malfunction of the SRS-ECU DIAGNOSIS PROCEDURE STEP 1. Check the passenger’s air bag cut off Q: Is the check result normal? YES : Go to Step 2. NO : Replace passenger’s air bag cut off switch ). STEP2. Check the diagnosis code by connecting AC509788 C-02 (R) AC Glove box striker 2 1 Harness side Lock Connector: C-02 (2) Disconnect passenger’s (front) air bag module connector C-02. Pull up the harness side lock AC300956 AP MB991865 MB991866 (Resistor harness) C-02 Passenger's (front) air bag module connector C-02 Harness side connector (3) Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991866). CAUTION Do not insert a test probe into the terminal from side connector C-02 by backprobing. (5) Check that the passenger's air bag cut off switch is "ON" position. (6) Connect the negative battery terminal. diagnosis code. Q: Is diagnosis code B1413 set? YES : Go to Step 3. NO : Replace the passenger's (front) air bag STEP 3. Voltage measurement at the SRS-ECU AC501670 AB C-131 (Y) Connector: C-131 Harness side (2) Disconnect SRS-ECU connector C-131. AC509788 C-02 (R) AC Glove box striker 2 1 Harness side Lock Connector: C-02 DANGER To prevents the air bag from deploying unin- (3) Disconnect passenger’s (front) air bag module connector C-02. Pull up the harness side lock |