STEP 3. Diagnosis check by dummy resistor connection
(1) Check that the negative battery terminal is disconnected. If connected, disconnect the negative battery terminal.
(2) Use the flat-tipped screwdriver to pull out the locking button of curtain air bag module (RH) connector to the direction of the arrow. After releasing the lock, disconnect the connector.
(3) Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991884).
(4) Connect the special tool resistor harness to the curtain air bag module (RH) harness side connector.
(5) Connect the negative battery terminal.
(6) After erasing the DTC memory, check the DTC again.
(7) Disconnect the negative battery terminal.
Is DTC B1442 set?
Go to Step 4. Replace the curtain air bag module (RH) (Refer to .)