SYSTEM DIAGRAM

System Description
How To Proceed With TroubleshootingStop Light Relay Circuit (C1A4B)
DESCRIPTION
The skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake
actuator assembly)*2 sends a stop light operation request signal to the stop light
relay (stop light switch assembly). If the skid control ECU (master cylinder solenoid)*1
or skid control ECU (brake actua ...
Lost 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 " ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT COUNTER GEAR
(a) Using a dial indicator and 2 V-blocks, measure the counter gear runout.
Maximum runout:
0.03 mm (0.00118 in.)
If the runout is more than the maximum, replace the counter gear.
HINT:
Measure the 3 areas shown in the illust ...