STEP 3. Resistance measurement at between the TCU connector (IND1, IND4, IND5, IND6 terminals).
(1) Disconnect the TCU and the ECALL&BCALL switch connector, and measure at the wiring harness side.
(2) Check the resistance between the TCU connector (IND1 terminal) and the ECALL&BCALL switch connector (terminal No.4).OK: The resistance should be 2 ohms or less
(3) Check the resistance between the TCU connector (IND4 terminal) and the ECALL&BCALL switch connector (terminal No.5).OK: The resistance should be 2 ohms or less
(4) Check the resistance between the TCU connector (IND5 terminal) and the ECALL&BCALL switch connector (terminal No.15).OK: The resistance should be 2 ohms or less
(5) Check the resistance between the TCU connector (IND6 terminal) and the ECALL&BCALL switch connector (terminal No.16).OK: The resistance should be 2 ohms or less
Is the check result normal?
Go to Step 4. Repair the connector(s) or wiring harness.