P3106

DTC P3106 ECM COMMUNICATION CIRCUIT MALFUNCTION

CIRCUIT DESCRIPTION

The HV ECU monitors the communication signal from the ECM and if it cannot monitor it due to noise or other reasons, judges as an error.

HINT:
- When using an OBD II scan tool other than TOYOTA hand-held tester, check all the steps.
- When using TOYOTA hand-held tester, confirm the information code and check it.

Detecting Condition:

DTC P3106 - Information code 209, 210, 211

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE

CIRCUIT DESCRIPTION

Detecting Condition:

DTC P3106 - Information code 212

INSPECTION PROCEDURE

If the information code 212 is output, after confirming the DTC of the ECM, check and repair the applicable DTC. Prior to repairing it, record the DTC of the HV ECU, freeze frame data and history of operation. Then, clear the DTC and check it one more time after starting the system again ("READY" light ON).

CIRCUIT DESCRIPTION

Detecting Condition:

DTC P3106 - Information code 394

INSPECTION PROCEDURE

If the information code 394 is output, check and repair the ECM power source circuit. If there is no problem in the power source circuit, replace the ECM. Prior to the repair, record the DTC of the HV ECU, freeze frame data and history of operation and clear them. Then, start the system one more time ("READY" light ON) and check the DTC again.