Toyota Corolla (E120): Circuit description

Monitor description

Monitor description

The ecm commands gearshift by turning the shift solenoid valves ”on/off”. When there is an open or short circuit in any shift solenoid valve circuit, the ecm detects the problem and the mil comes on. Illuminating the mil, the ecm performs the fail–safe and turns the other shift solenoid valves in good condition ”on/off” (in case of an open or short circuit, the ecm stops sending current to the circuit.).

Monitor strategy

Typical enabling condition

Typical enabling condition

Typical malfunction thresholds

Typical malfunction thresholds

Component operating range

Component operating range

Wiring diagram

Wiring diagram

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    Overhaul
    1. Remove console panel upper 2. Remove console box carpet 3. Remove parking brake hole cover sub–assy 4. Remove console box sub–assy rear 5. Disconnect floor shift cable transmission control shift Remove the cable end from the rod of the floor shift assembly. Using a s ...

    Overhaul
    1. Inspect 1st gear thrust clearance Using a feeler gauge, measure the 1st gear thrust clearance. Standard clearance: 0.10 – 0.40 Mm (0.0039 – 0.0157 In.) 2. Inspect 2nd gear thrust clearance Using a dial indicator, measure the 2nd gear thrust clearance. Standard clearan ...

    Check short circuit
    If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body ground.  Disconnect connectors a and c and measure the resistance between terminals 1 and 2 ...