DESCRIPTION
The main body ECU (multiplex network body ECU) controls the front fog lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CHECK OPERATION (TAILLIGHTS) |
(a) Check the operation of the taillights.
OK:
Taillights operate normally.
NG | ![]() |
GO TO PROBLEM SYMPTOMS TABLE |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
---|---|---|---|
Front Fog Light Relay |
Front fog lights |
ON/OFF |
Light control switch in tail position |
Tester Display |
---|
Front Fog Light Relay |
OK:
Front fog lights come on.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
3. |
CHECK HARNESS AND CONNECTOR (FR FOG RELAY - BATTERY) |
(a) Remove the FR FOG relay from the No. 4 relay block assembly.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 5 -Body ground |
Always |
11 to 14 V |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (FR FOG RELAY INPUT VOLTAGE) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 2 - Body ground |
Light control switch TAIL or HEAD |
11 to 14 V |
NG | ![]() |
GO TO STEP 9 |
|
5. |
INSPECT FR FOG RELAY |
(a) Inspect the FR FOG relay.
Click here
NG | ![]() |
REPLACE FR FOG RELAY |
|
6. |
CHECK HARNESS AND CONNECTOR (FR FOG RELAY - FOG LIGHT ASSEMBLY RH AND FOG LIGHT ASSEMBLY LH) |
(a) Disconnect the A36 fog light assembly LH connector.
(b) Disconnect the A35 fog light assembly RH connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 3 - A36-2 (B) |
Always |
Below 1 Ω |
Relay terminal 3 - A35-2 (B) |
Always |
Below 1 Ω |
Relay terminal 3 or A36-2 (B) - Body ground |
Always |
10 kΩ or higher |
Relay terminal 3 or A35-2 (B) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
7. |
CHECK HARNESS AND CONNECTOR (FR FOG RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3A instrument panel junction block assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 1 - 3A-52 |
Always |
Below 1 Ω |
Relay terminal 1 or 3A-52 - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
(c) Measure the resistance according to the value(s) in the table below.
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
3A-52 - MB-7 (FFGO) |
Always |
Below 1 Ω |
OK | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
9. |
CHECK HARNESS AND CONNECTOR (FR FOG RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3D instrument panel junction block assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay terminal 2 - 3D-11 |
Always |
Below 1 Ω |
Relay terminal 2 or 3D-11 - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Toyota CH-R Service Manual > Windshield Outside Moulding: Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. REMOVE WINDSHIELD OUTSIDE MOULDING
(a) Apply protective tape around the windshield outside moulding.
Prote ...
Toyota CH-R Service Manual > Power Mirror Control System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
If the battery voltage is low, the mirror heater function may not operate. In
this case, check the Data List item "Battery Control Count (Body ECU)".
Click here
HINT:
Use the table below to help determine the cause of problem symptoms.
...