1) Inspect the immobilizer coil (+) circuit between the wireless access module (pin 2 of B13) and the immobilizer coil (pin 1 of B38) for an open circuit or high resistance. Is the result normal?
2) Inspect the immobilizer coil (-) circuit between the wireless access module (pin 8 of B13) and the immobilizer coil (pin 5 of B38) for an open circuit or high resistance. Is the result normal?
Refer to "LHD Power Door Locks (Wireless Access Module (Mid-version/Lo-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Power Door Locks (Wireless Access Module (Mid-version/Lo-version))" in the ETM (wiring diagram). (Open using the ETM viewer.).
3) Are all of the results normal?
Yes
Replace the immobilizer coil.
Refer to "9.Body, Cab, Accessories 9J.Security and Locks immobilizer coil removal".
Refer to "9.Body, Cab, Accessories 9J.Security and Locks immobilizer coil installation".
No
Repair the circuit as necessary.
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool. Is a DTC set?
Yes
=>Go to Wireless access module replacement.
No
Note
Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control wireless access module removal".
Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control wireless access module installation".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool.