DTC B1088[A3] ECU Supply Voltage (Voltage High) (Central GateWay)

1. Body control system check

Refer to "64.Body Control 10I.Troubleshooting(Central GateWay) diagnostic system check - central gateway controls".

2. Current DTC check

1) Connect the scan tool.

2) Turn ON the ignition switch.

3) Observe the DTC information with a scan tool. Is a DTC set?

Yes

=>Go to charging system check.

No

Go to Intermittent conditions of body control system.

Refer to "223.Body Control 36D.Symptom(Central GateWay) intermittent conditions of body control system".

3. charging system check

1) Inspect the charging system. Is the result normal?

Refer to "1.Engine 1J.Electrical(4JJ3 with DPD) generator inspection".

Refer to "202.Engine 15D.Symptom(4JJ3 with DPD) defect of charging system".

Refer to "1.Engine 1J.Electrical(4JJ3 without DPD) generator inspection".

Refer to "202.Engine 15D.Symptom(4JJ3 without DPD) defect of charging system".

Refer to "1.Engine 1J.Electrical(RZ4E-TC) generator inspection".

Refer to "202.Engine 15D.Symptom(RZ4E-TC) defect of charging system".

Yes

Go to Intermittent conditions of body control system.

Refer to "223.Body Control 36D.Symptom(Central GateWay) intermittent conditions of body control system".

No

Repair the cause for excessive voltage on the vehicle side as necessary.

=>Go to Repair verification.

4. Repair verification

1) Clear the DTC with a scan tool.

2) Turn OFF the ignition switch for 30 seconds or more.

3) Turn ON the ignition switch.

4) Observe the DTC information with a scan tool.