Toyota Corolla Cross: Water Pump

 Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST (a) In accordance with the screen on the GTS, display the data list screen and check the data. Body Electrical > Navigation System > Data List Tester Display Measurement Item Range Normal Condition D

 ECM Power Source Circuit

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