Toyota Corolla Cross: System Diagram
SYSTEM DIAGRAM

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CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the parking support brake
system.
*: Use the GTS.
PROCEDURE
1.
VEHICLE BROUGHT TO WORK
OPERATION CHECK
PKSB OFF INDICATOR LIGHT OPERATION CHECK
(a) Turn the ignition switch to ON.
(b) Turn the parking support brake system off and confirm that
the PKSB OFF indicator light in the com
CUSTOMIZE PARAMETERS
CUSTOMIZE PARKING SUPPORT BRAKE SYSTEM
(a) Customizing with the GTS.
Clearance Warning
Tester Display
Description
Default
Setting
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DESCRIPTION These DTCs are stored if a CAN communication malfunction occurs between the headlight ECU sub-assembly LH and other ECUs.
DTC No. Detection Item
DTC Detection Condition Trouble Area
U010087 Lost Communication with ECM/PCM "A" Missing Message
The headlight ECU s
DESCRIPTION When the ignition switch is turned to ON, the auxiliary battery voltage is applied to IGP of the ECM. When the transistor in the MREL circuit operates, current flows from the auxiliary battery to ground through the drive circuit of the EFI-MAIN NO. 1 relay, thus operating the relay which