Pinpoint Test C
- Locate the moon roof relay. Key ON. Measure voltage on all three Green wires at the moon roof relay. Is the voltage greater than 10 volts? If yes, go to next step. If no, repair the Green wire between the moon roof switch and relay. See WIRING DIAGRAMS .
- Measure resistance at the Black wire between the moon roof relay and ground. See WIRING DIAGRAMS . Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the Black wire ground circuit.
- Verify the wire voltages with these conditions. Key ON, relay connected. See MEASURING RELAY WIRE VOLTAGES .
MEASURING RELAY WIRE VOLTAGES
| Wire | Condition | Voltage At "Y" Wire | Voltage At "Y/R" Wire |
|---|---|---|---|
| BL | Grounded | Greater Than 10 Volts | - |
| BL | Not Grounded | Less Than 1.5 Volts | - |
| Y/GN | Grounded | - | Greater Than 10 Volts |
| Y/GN | Not Grounded | - | Less Than 1.5 Volts |
Is the moon roof relay operating correctly? If yes, go to next step. If no, repair or replace the moon roof relay. See MOON ROOF SWITCHES under REMOVAL & INSTALLATION.