Manual Switch Circuit
- Remove tilt and telescopic control module with connectors connected. Measure voltage between tilt and telescopic control module connector (T10), terminals No. 16 (Purple wire) and No. 17 (Red/White wire). See Figure. Operate manual switch in each position and note voltage reading. See MANUAL SWITCH OPERATION PIN VOLTAGE table. If voltages are as specified, go to TROUBLE SHOOTING and identify next circuit to be checked. If voltages are not as specified, go to next step.MANUAL SWITCH OPERATION PIN VOLTAGE
Switch Position Voltage Telescopic Extend 2.05-2.75 Tilt Up 1.30-1.70 Telescopic Retract .65-.95 Tilt Down .30-.50 - Disconnect manual switch wiring harness connector. Measure resistance between manual switch connector terminal No. 4 and 6. See Fig 1. Operate manual switch in each position and note resistance. See MANUAL SWITCH RESISTANCE table. If resistances are as specified, go to next step. If resistances are not as specified, replace tilt and telescopic manual switch.
- Check and repair wiring harness between tilt and telescopic control module and manual switch connector. See WIRING DIAGRAMS. If wiring harness is okay, replace tilt and telescopic control module and retest system.
MANUAL SWITCH RESISTANCE
| Switch Position | Ohms |
|---|---|
| Telescopic Extend | 160 |
| Tilt Up | 360 |
| Telescopic Retract | 790 |
| Tilt Down | 1990 |