Toyota Corolla (E120): Circuit description

When driving uphill under cruise control, in order to reduce the number of shifting due to on–off overdrive operation and to provide smooth driving, when down shifting in the electronically controlled transmission occurs, a signal to prevent upshift until the end of the uphill slope is sent from the cruise control ecu assy to the electronically controlled transmission.

Terminal ect of the cruise control ecu assy detects the shift change signal (output to electronically controlled transmission no.2 Solenoid) from the ecm.

If the vehicle slows down, also when terminal ect of the cruise control ecu assy receives down shifting signal, it sends a signal from terminal od to ecm to cut overdrive until the end of the uphill slope, and the number of gear shifts are reduced and gear shift points in the electronically controlled transmission are changed.

Wiring diagram

Inspection procedure

    Share this page:

    Other materials:

    Customer problem analysis
    Hint: in troubleshooting, the problem symptoms must be confirmed accurately, meaning that all preconceptions must be set aside in order to make an accurate judgement. To ascertain what the problem symptoms are, it is extremely important to ask the customer about the problem and cond ...

    Overhaul
    Hint: components: 1. Discharge refrigerant from refrigeration system sst 07110–58060 (07117–58080, 07117–58090, 07117–78050, 07117–88060, 07117–88070, 07117–88080) 2. Disconnect cooler refrigerant liquid pipe a Remove the bolt and disconnect the cooler refrigerant liqui ...

    Using a top tether anchorage (for Puerto Rico)
    ■ Top tether anchorages Top tether anchorages are provided for each rear seat. Use top tether anchorages when fixing the top strap. Top tether anchorages Top strap ■ Fixing the top strap to the top tether anchorages Install the child restraint system in accordance to the operation manual e ...