Toyota Corolla (E120): Circuit description

The srs warning light is located on the combination meter.

When the srs is normal, the srs warning light lights up for approx. 6 Seconds after the ignition switch is turned from the lock position to on position, and then turns off automatically.

If there is a malfunction in the srs, the srs warning light lights up to inform the driver of the abnormality.

When terminals tc and cg of the dlc3 are connected, the dtc is displayed by blinking the srs warning light.

Wiring diagram

Inspection procedure

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    Inspection procedure
    Hand–held tester: 1 Perform active test by hand–held tester(operation of circuit opening relay) Connect the hand–held tester to the dlc3.  turn the ignition switch on and push the hand–held tester main switch on.  select the item ”diagnosis / enhanced obd ii / active ...

    Mechanical system tests
    1. Perform mechanical system tests Measure the stall speed. The object of this test is to check the overall performance of the transaxle and engine by measuring the stall speeds in the d and r positions. Notice: Do the test at normal operating atf temperature 50 to 80 °c (122 to ...

    On–vehicle inspection
    1. Inspect refrigerant pressure with manifold gauge set  this is a method in witch the trouble is located by using a manifold gauge set. Read the manifold gauge pressure when the these conditions are established. Test conditions: temperature at the air inlet with the switch set ...