| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B153A | GVIF Disconnected (from Extension Module to H/U) | GVIF disconnected (from navigation ECU to radio and display receiver assembly) | ·
Navigation ECU ·
Radio and display receiver assembly ·
No. 1 navigation wire |
When replacing the radio and display receiver assembly or navigation ECU, always replace it with a new one. If a radio and display receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
A communication malfunction DTC may be stored.
The radio and display receiver assembly or navigation ECU may not operate normally.
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
Clear the DTCs.
Recheck for DTCs and check that no DTCs are output.
No DTCs are output.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| *a | Front view of wire harness connector
(to Navigation ECU) |
| *b | Front view of wire harness connector
(to Radio and Display Receiver Assembly) |
Disconnect the O13 navigation ECU connector.
Disconnect the O14 radio and display receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| O13-1 (GVO-) - O14-1 (GV2-) | Always | Below 1 Ω |
| O13-2 (GVO+) - O14-2 (GV2+) | Always | Below 1 Ω |
| O13-3 (GVG1) - O14-3 (GVG2) | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| NEXT |
NEXT
Clear the DTCs.
Recheck for DTCs and check that no DTCs are output.
No DTCs are output.
| Proceed to |
|---|
| OK |
| NG |
OK
NG