Pinout Values and Diagnostic Parameters

Fig. 18 Engine Controller Connector:

1. Unplug 60-way engine controller harness connector.
2. Remove speed control switch, then disconnect four way connector.

Fig. 19 4-way Electrical Connector:

3. Connect a ohmmeter between terminal No. 23 of engine controller and pin No. 4 of speed control switch harness.
4. If no continuity exists, repair wire circuit as needed.
5. If continuity exists, refer to "Speed Control Switch Test". Reconnect speed control switch connector.
6. Turn ignition switch to On position and speed control switch to OFF position, connect voltmeter to terminal No. 53, no voltage should exist.
7. Place speed control switch to ON position, connect voltmeter to terminal No. 53, voltage should exist. If no voltage exists repair wire between pin 53 and pin 3 of speed control servo.
8. Place speed control switch to OFF position, connect voltmeter to terminal No. 33, voltage should not exist.
9. Place speed control switch to OFF position, connect voltmeter to terminal No. 33, voltage should exist. If no voltage exists repair wire between pin 33 and pin 4 of speed control servo.
10. Connect one lead of a ohmmeter to ground and other lead to terminal No. 29, with brake pedal released continuity should exist. With brake pedal depressed continuity should not exist.
11. If continuity exists when pedal is depressed, check for continuity between terminal No. 29 of engine controller and pin 3 of stop lamp connector. If no continuity exists, repair wiring. If continuity does exist test stop lamp switch. Refer to "Stop Lamp Switch Test".
12. If stop lamp switch test is satisfactory, test continuity between pin No. 6 of stop lamp switch and ground.
13. Connect one lead of an ohmmeter to ground and one lead to pin 30, place transaxle in Drive, no continuity should not exist. Place selector in Park or Neutral, continuity should exist.