Refer to "64.Body Control 10I.Troubleshooting(eCall unit) diagnostic system check - emergency call system controls".
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 SRS control unit communication verification.
No
Go to Intermittent conditions of body control system.
Refer to "223.Body Control 36D.Symptom(eCall unit) intermittent conditions of body control system".
1) Display the data by using the scan tool to communicate with the SRS control unit. Can communication with the SRS control unit be established?
Yes
=>Go to SRS control unit DTC check.
No
Go to Lost communication with the SRS control unit.
1) Observe the DTC information for SRS control unit with a scan tool. Is a DTC set?
Yes
Go to the applicable DTC diagnosis.
No
=>Go to CAN communication circuit inspection.
1) Perform Scan tool does not communicate with CAN device.
Procedure completion
=>Go to Current DTC follow-up check.
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. Is a DTC set?
Yes
=>Go to eCall unit replacement.
No
Note
Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit removal".
Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit installation".
Refer to "9.Body, Cab, Accessories 9Z.Body, Cab, Accessories Electrical Control eCall unit setting".
Procedure completion
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.