Toyota Camry (XV70): Parking Brake Switch Circuit
DESCRIPTION
This circuit is from the skid control ECU (brake actuator assembly) to the radio and display receiver assembly.
WIRING DIAGRAM
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PROCEDURE
| 1. |
CHECK BRAKE WARNING LIGHT |
(a) Check that the brake warning light comes on when the parking brake is applied and goes off when it is released.
OK:
The brake warning light operates as specified above.
| NG | .gif) | GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS
|
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| 2. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) - RADIO AND DISPLAY RECEIVER ASSEMBLY) |
(a) Disconnect the K2 radio and display receiver assembly connector.
(b) Disconnect the A34 skid control ECU (brake actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
K2-20 (PKB) - A34-33 (PKB) |
Always | Below 1 Ω |
|
K2-20 (PKB) or A34-33 (PKB) - Body ground |
Always | 10 kΩ or higher |
| OK | | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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Thus sound cannot be heard from the speakers even if there
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The sound signal that is sent is amplified by the stereo compone
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SEE MORE:
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)
No. 1 navigation wire
Navigation ECU
Rad
Brake Warning Light (Yellow) Remains On
DESCRIPTION This procedure is for troubleshooting when the brake warning light (yellow) remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the brake warning light (yellow) in the combination meter assembly via CAN communication. PROCEDURE
1.
CHECK
