STEP 3. Check SRS-ECU connector C-124 and side-airbag module (RH) connector D-39.
(1) Disconnect the negative battery terminal.
(2) While pushing the part "A" indicated in the figure of the harness side connector, turn the lock lever to the direction of the arrow to release the lock lever. After disconnecting the C-124 SRS-ECU connector, connect it again.
(3) Disconnect the D-39 side-airbag module connector, and then reconnect it. Unlock the connector by sliding the locking button to the direction of the arrow as shown in the figure, and then disconnect the connector.
(4) Connect the negative battery terminal.
(5) Erase the diagnostic trouble code memory, and check the diagnostic trouble code.
Is DTC B1420 out put?
Go to Step 4. The procedure is complete. It is assumed that DTC B1420 set because connector C-124 or D-39 was engaged improperly.