Motor Power Supply & Drive

Fig. 33 Motor Power Supply & Drive Circuit Diagram:

1. Disconnect motor relay harness connector.
2. Connect a suitable ohmmeter between motor relay connector terminals 1 and 3 (motor relay side).
3. Ohmmeter should indicate continuity.
4. If continuity is indicated, circuit is satisfactory; continue with procedure. If not, replace motor and track assembly.
5. Connect ohmmeter between motor relay connector terminal 5 (harness side) and ground.
6. Ohmmeter should indicate continuity.
7. If continuity is indicated, circuit is satisfactory; continue with procedure. If not, repair harness as necessary.
8. Disconnect control unit harness connector.
9. Connect ohmmeter between motor relay connector terminal 2 (motor relay side) and ground, then between terminal 6 (motor relay side) and ground.
10. Ohmmeter should indicate continuity.
11. If continuity is indicated, circuit is satisfactory; continue with procedure. If not, replace motor and track assembly.
12. Connect a suitable voltmeter between motor relay connector terminal 2 (harness side) and ground, then between terminal 6 (harness side) and ground.
13. Voltage indicated should be approximately 12 volts.
14. If voltage indicated is as specified, circuit is satisfactory; continue with procedure. If not, repair harness as necessary.
15. If voltage indicated is not as specified, repair harness as necessary.
16. Connect motor relay harness connector.
17. Connect voltmeter between control unit connector terminals 8, 9 and ground (left side), then between terminals 18, 19 and ground (right side).
18. Voltage indicated should be approximately 12 volts.
19. If voltage indicated is as specified, circuit is satisfactory.
20. If voltage indicated is not as specified, repair harness or replace motor and track assembly as necessary.