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) |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
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 CodesOK:
No DTCs are output.
OK | ![]() |
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. |
|
(b) Disconnect the GU No. 1 navigation wire connector from the navigation ECU.
(c) Measure the resistance according to the value(s) in the table below.
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 |
NG | ![]() |
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
|
4. |
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 CodesOK:
No DTCs are output.
OK | ![]() |
END (ANTENNA CORD SUB-ASSEMBLY IS DEFECTIVE) |
|
5. |
REPLACE NAVIGATION ECU |
(a) Replace the navigation ECU with a new one.
Click here
|
6. |
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 CodesOK:
No DTCs are output.
OK | ![]() |
END (NAVIGATION ECU IS DEFECTIVE) |
NG | ![]() |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
Toyota CH-R Service Manual > Lin Communication System: Terminals Of Ecu
TERMINALS OF ECU
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK
BODY ECU)
*A
1 Connector Type
-
-
*A
2 Connector Type
-
-
(a) Disconnect the MB mai ...
Toyota CH-R Service Manual > Airbag System: Short in Rear Side Squib RH Circuit (B1850/62-B1853/62)
DESCRIPTION
The rear side squib RH circuit consists of the airbag sensor assembly and rear
seat airbag RH
The airbag sensor assembly uses this circuit to deploy the airbag when deployment
conditions are met.
These DTCs are stored when a malfunction is detected in the rear side squib RH
circ ...