Front Drive Corolla

Fig. 83 Adjusting Throttle Positioner 1st Stage:

Fig. 84 Adjusting Throttle Positioner Speed:

Fig. 85 Adjusting Throttle Positioner 2nd Stage:

1. Disconnect the vacuum hose from TP diaphragm A, Fig. 83.
2. Check that the TP is at the first step (electrical load idle up). The settings for first step speed should be 800 RPM for M/T and 900 RPM for A/T.
3. If settings are not as specified, adjust TP screw, Fig. 84.
4. Disconnect vacuum hose from TP diaphragm B, Fig. 85.
5. Check that the TP is set on the second step at 1100-1500 RPM for M/T and 1200-1600 RPM for A/T. If not within specification, adjust using screw, Fig. 84.