Repair Procedures: Inspection
[Measuring Resistance]
- Disconnect the cruise control switch connector from the control switch.
- Measure resistance between terminals on the control switch when each function switch is ON (switch is depressed).
Function switch Terminal Resistance CANCEL 3 - 4 180 Ω ± 5% SET/- 3 - 4 330 Ω ± 5% RES/+ 3 - 4 550 Ω ± 5% ON/OFF 3 - 4 880 Ω ± 5% - If not within specification, replace switch.
[Measuring Voltage]
- Connect the cruise control switch connector to the control switch.
- Measure voltage between terminals on the harness side connector when each function switch is ON (switch is depressed).
Function switch Terminal Voltage CANCEL 3 - 4 0.76 ± 0.15 V SET/- 3 - 4 1.24 ± 0.2 V RES/+ 3 - 4 1.77 ± 0.22 V ON/OFF 3 - 4 2.34 ± 0.1 V - If not within specification, inspect the control switch resistance.
The measuring resistance value is not within specification, replace the switch and measure the voltage again.
- If resistance is OK but, measuring voltage is not within specification, inspect the wiring harness and connectors between the switch and the ECM.