Toyota Tacoma manuals

Toyota Corolla Repair Manual: Circuit description

The ignition switch provides circuit power and the ecm provides the circuit ground that illuminates the mil.

Mil operation is checked visually: it should be illuminated when the ignition is first turned on. If the mil is off all of the time or on all of the time, use the procedure below to troubleshoot it. The mil is used to indicate the ecms detection of a vehicle malfunction.

Follow this procedure using the handheld tester or an obd ii scan tool to determine the cause of the problem and to check the mil.

Wiring diagram

Inspection procedure

Mil circuit
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Inspection procedure
Hint: troubleshoot each trouble symptom in accordance with the chart below. 1 Clear dtc Connect the handheld tester or the obd ii scan tool to the dlc 3.  turn the ignition switch on ...

Other materials:

Circuit description
When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations of hc passing through the catalyst also cause to temperature of the catalyst to ...

Emergency flashers
The emergency flashers are used to warn other drivers when the vehicle has to be stopped in the road due to a breakdown, etc. Press the switch. All the turn signal lights will flash. To turn them off, press the switch once again. ■Emergency flashers If the emergency flashers are used ...

Checking monitor status
Hint: monitor result indicates normal or malfunction of each component and system when judgment has done. 1. How to read data Connect the handheld tester to the dlc 3.  enter monitor result from diagnosis / enhanced obd ii / monitor info / monitor result on the handheld ...

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