Toyota CH-R Service Manual: GVIF Disconnected (from Extension Module to H/U) (B153A)

Toyota CH-R Service Manual / Navigation / Multi Info Display / Navigation System / GVIF Disconnected (from Extension Module to H/U) (B153A)

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 No. 1 Navigation Wire Antenna Cord Sub-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

CHECK DTC

(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.

USE SIMULATION METHOD TO CHECK

2.	INSPECT NO. 1 NAVIGATION WIRE

(a) Disconnect the GA No. 1 navigation wire connector from the antenna cord sub-assembly.

Front view of wire harness connector

(to Navigation ECU)

Front view of wire harness connector

(to Antenna Cord Sub-assembly)

(b) Disconnect the GU No. 1 navigation wire connector from the navigation ECU.

Standard Resistance:

Tester Connection	Condition	Specified Condition
GU-1 (GV-) - GA-1	Always	Below 1 Ω
GU-2 (GV+) - GA-2	Always	Below 1 Ω
GU-3 (GND) - GA-3	Always	Below 1 Ω

REPAIR OR REPLACE HARNESS OR CONNECTOR

3.	REPLACE ANTENNA CORD SUB-ASSEMBLY

(a) Replace the antenna cord sub-assembly with a new or known good one.

Click here

CHECK DTC

(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.

END (ANTENNA CORD SUB-ASSEMBLY IS DEFECTIVE)

5.	REPLACE NAVIGATION ECU

(a) Replace the navigation ECU with a new one.

Click here

CHECK DTC

(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.

END (NAVIGATION ECU IS DEFECTIVE)

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

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Toyota CH-R Service Manual: GVIF Disconnected (from Extension Module to H/U) (B153A)

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