Toyota Corolla Cross: System Diagram
SYSTEM DIAGRAM

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CAUTION / NOTICE / HINT
HINT:
Before performing troubleshooting for the front radar sensor system,
perform troubleshooting for the front camera system.
Click here
*: Use the GTS.
P
UTILITY
Transition to Online Axis Alignment Mode
NOTICE:
This utility transitions to online axis alignment mode of the millimeter
wave radar sensor assembly.
(a) Following the instructions on th
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed i
SEE MORE:
INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION)
Procedure Part Name Code
1 WATER INLET WITH THERMOSTAT SUB-ASSEMBLY
16031
- -
2 ENGINE WATER PUMP ASSEMBLY (WATER INLET HOUSING)
16032 -
- -
DESCRIPTION When the ignition switch is turned to ON, the auxiliary battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil of the EFI-MAIN NO. 1 relay, closing the contacts of the EFI-MAIN NO. 1 relay and sup