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Toyota Corolla Repair Manual: Ecm/pcm processor

Dtc p0606 ecm/pcm processor

Monitor description

The ecm continuously monitors its internal circuits. This selfcheck insures that the ecm is functioning properly.

If a malfunction is detected, the ecm will set the appropriate dtc and illuminate the mil.

The two cpus, main and sub cpu inside the ecm, perform continuous mutual monitoring. If there is difference between outputs from the two cpus that deviates from standard level ranges, the ecm concludes that there is a fault and sets a dtc.

Monitor strategy

Monitor strategy

Typical enabling conditions

Typical enabling conditions

Typical malfunction thresholds

Typical malfunction thresholds

Inspection procedure

Inspection procedure

Hint

: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the airfuel ratio was lean or rich, etc. At the time of the malfunction.

Replace ecm

Inspection procedure
Hint: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is usefu ...

Starter relay circuit high
Dtc p0617 starter relay circuit high ...

Other materials:

Inspection procedure
1 Check front airbag sensor (lh) circuit (to b+)(airbag sensor assy center airbag sensor front lh) Disconnect the negative () terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the airbag sens ...

Onvehicle inspection
1. Inspect front axle hub bearing  remove the front wheel.  separate the front disc brake caliper assy .  remove the front disc.  inspect the bearing backlash. Using a dial indicator, check the backlash near the center of the axle hub. Maximum: 0.05 Mm (0. ...

Starting & charging
Preparation Sst Recomended tools Equipment ...

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