DESCRIPTION |
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) |
- Harness or connector
- Navigation ECU
- Radio and display receiver assembly
| WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- 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.
Click here 
- 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.
PROCEDURE (a) Clear the DTCs. Body Electrical > Navigation System > Clear DTCs
(b) Recheck for DTCs and check that no DTCs are output. Body Electrical > Navigation System > Trouble Codes
OK: No DTCs are output.
| OK |  |
USE SIMULATION METHOD TO CHECK |
|
NG |
 | |
| 2. |
CHECK HARNESS OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - NAVIGATION ECU) |
| (a) Disconnect the G109 navigation ECU connector. |
 |
|
*a | Front view of wire harness connector
(to Radio and Display Receiver Assembly) | |
*b | Front view of wire harness connector
(to Navigation ECU) | | |
(b) Disconnect the G110 radio and display receiver assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G109-1 (GVO-) - G110-1 (GV2-) |
Always | Below 1 Ω | |
G109-2 (GVO+) - G110-2 (GV2+) |
Always | Below 1 Ω | |
G109-3 (GVG1) - G110-3 (GVG2) |
Always | Below 1 Ω |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
REPLACE NAVIGATION ECU | (a) Replace the navigation ECU with a new one.
Click here
|
NEXT | |
| |
(a) Clear the DTCs. Body Electrical > Navigation System > Clear DTCs
(b) Recheck for DTCs and check that no DTCs are output. Body Electrical > Navigation System > Trouble Codes
OK: No DTCs are output.
| OK | |
END (NAVIGATION ECU IS DEFECTIVE) |
| NG |
| REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY | | 
