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 the dummy resistor (Special tool: MB991865) to the resistor harness (Special tool: MB991884).
(4) Connect the resistor harness (special tool) to curtain air bag module (RH) (front) 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 No. B1443 stored?
Go to step 4. Replace the curtain air bag module (RH) (Refer to .)