IMMOBILIZER (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC DETECTING CONDITION:

• Failure of IMM ECM to verify key (transponder) ID code

• Failure of key (transponder)

STEP	CHECK	YES	NO
1.CHECK IMM ECM FUNCTION. Insert the key into the ignition switch (LOCK position), then measure changes in voltage between the antenna connectors. Connector & terminal (B142) No. 1 (+) — No. 2 (−):	Is the voltage −30 to 30 V? (Approx. 0.1 second after inserting the key) Is the voltage 0 V? (Approx. 1 second after inserting the key)		Replace the IMM ECM and then replace all ignition keys (including the transponder). Execute the registration procedure next. Refer to REGISTRATION MANUAL FOR IMMOBILIZER (Pub. No. S0820GZ).
2.CHECK IGNITION KEY (TRANSPONDER). 1) Remove the key from ignition switch. 2) Start the engine using other key which is already registered.	Does the engine start?	Replace the ignition key (including the transponder). Execute the registration procedure next. Refer to REGISTRATION MANUAL FOR IMMOBILIZER (Pub. No. S0820GZ).	Replace the IMM ECM and then replace all ignition keys (including the transponder). Execute the registration procedure next. Refer to REGISTRATION MANUAL FOR IMMOBILIZER (Pub. No. S0820GZ).