diagnostic system check - information module (Information Module)

Check for related Service Bulletins before starting the diagnosis.
Do not clear the DTC unless instructed to do so in a diagnostic step.
The battery should be fully charged.
The battery cable should be normal and securely connected.
The ground of the information module should be connected to the correct position.

1. Scan tool power-up check

1) Connect the scan tool.

2) Power up the scan tool. Does the scan tool power up?

Yes (Models with radar sensors/stereo cameras)

=>Go to Central gateway control unit communication verification.

Yes (Models without radar sensors and stereo cameras)

=>Go to Information module communication verification.

Go to Scan tool does not power up.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) Scan tool does not power up".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 without DPD) Scan tool does not power up".

Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) Scan tool does not power up".

2. Central gateway control unit communication verification

1) Verify communication with the central gateway control unit using the scan tool. Can communication with the central gateway control unit be established?

Yes

=>Go to Information module communication verification.

Go to Lost communication with the central gateway control unit.

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) lost communication with the central gateway control unit".

=>Go to Information module communication verification.

3. Information module communication verification

1) Verify that communication can be established with the information module using a scan tool. Can communication with the information module be established?

Yes

=>Go to Current DTC check.

No (Models with radar sensors/stereo cameras)

Go to Lost communication with the information module.

Refer to "64.Body Control 10I.Troubleshooting(Information Module) lost communication with the information module (models with radar sensor/ stereo camera)".

No (Models without radar sensors and stereo cameras)

Go to Lost communication with the information module.

Refer to "64.Body Control 10I.Troubleshooting(Information Module) lost communication with the information module (models without radar sensor and stereo camera)".