Power Source Circuit
ComponentsLost Communication with ECM / PCM "A" (U0100,U0122)
DESCRIPTION
This DTC is output when communication is lost with the skid control ECU (brake
actuator assembly) or ECM.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U0100
Lost Communication with ECM / PCM " ...
Low Pitched Horn
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT LOW PITCHED HORN ASSEMBLY
(a) Check the operation.
(1) Apply battery voltage to the terminal 1 and body ground, and check
that the low pitched horn assembly sounds.
Text in Illustration
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Brake Warning Light Remains ON
DESCRIPTION
The BRAKE warning light comes on when brake fluid is insufficient, the parking
brake is applied or the EBD is defective.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform
calibration (See page
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