DESCRIPTION
In this circuit, the combination meter assembly receives auto dimmer signals from the main body ECU (multiplex network body ECU) via CAN communication. When the combination meter assembly receives an auto dimmer signal, it dims the meter illumination (warning and indicator lights).
The main body ECU (multiplex network body ECU) determines whether it is daytime or nighttime based on the waveform transmitted from the automatic light control sensor. If the main body ECU (multiplex network body ECU) determines that it is nighttime and the headlight dimmer switch assembly is in the tail, head, or AUTO position, the ECU sends an auto dimmer signal to the combination meter assembly.
According to this signal, the combination meter assembly dims the meter illumination.
HINT:
When the meter illumination does not dim at night, there may be a malfunction in the automatic light control sensor, main body ECU (multiplex network body ECU), CAN communication system, wire harness, connector, or combination meter assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
HINT:
Click here
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check if CAN communication DTCs are output.
Click here
Result |
Proceed to |
---|---|
CAN communication DTCs are not output. |
A |
CAN communication DTCs are output. |
B |
B |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
CHECK FOR DTC |
(a) Check if lighting system DTCs are output.
Click here
Body Electrical > Main Body > Trouble Codes
Result |
Proceed to |
---|---|
DTC B1244 is not output. |
A |
DTC B1244 is output. |
B |
B |
GO TO DTC B1244 |
|
3. |
REPLACE COMBINATION METER ASSEMBLY |
(a) Replace the combination meter assembly with a new one.
Click here
OK:
The operation of the combination meter assembly returns to normal.
OK |
END |
NG |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
Toyota CH-R Service Manual > Maintenance: Front Wiper Rubber
Components
COMPONENTS
ILLUSTRATION
*1
FRONT WIPER BLADE
*2
FRONT WIPER RUBBER
Removal
REMOVAL
CAUTION / NOTICE / HINT
NOTICE:
Make sure to hold the front wiper arm while lifting it as lifting the front wiper
arm by the front wiper ...
Toyota CH-R Service Manual > Navigation System: Voice Recognition Microphone Disconnected (B1579)
DESCRIPTION
The radio and display receiver assembly and map light assembly (telephone microphone
assembly) are connected to each other using the microphone connection detection
signal lines.
This DTC is stored when a microphone connection detection signal line is disconnected.
DTC ...