DTC P1683-B: Speed Control Power Relay Circuit Or 12-Volt Driver Circuit
NOTE:
For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see
WIRING DIAGRAMS article.
- Using an ohmmeter, check resistance of speed control brake switch output circuit between brake switch connector and speed control servo 4-pin connector. See SPEED CONTROL SERVO CONNECTOR WIRE IDENTIFICATION table and BRAKE SWITCH CONNECTOR WIRE IDENTIFICATION table. If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open brake switch output circuit between speed control servo and PCM. Perform TEST VER-4A: SPEED CONTROL VERIFICATION .
- Check brake switch adjustment. See DISC & DRUM article in BRAKES section. If brake switch adjustment is okay, replace brake switch. Perform TEST VER-4A: SPEED CONTROL VERIFICATION . If brake switch adjustment is not okay, adjust brake switch as necessary. Perform TEST VER-4A: SPEED CONTROL VERIFICATION .