The RAVE control unit operates the solenoid to open the valve at the exhaust end at 8100 rpm.
Troubleshooting
Check the condition of the 15 A fuse.
Attach a 12V battery direct to the solenoid to check for proper operation.
Check the flywheel; see 8.6.1.
Fit a substitute regulator known to operate correctly.
Fit a substitute RAVE control unit known to operate correctly.
Warning! Cut the jumper across the grey and red wires of the RAVE control unit and the solenoid will operate the valve at 7,800 rpm.
Control unit
Remove the fuel tank; see 4.1.1.
Remove the battery and battery box mount together; see 7.2.1.
Disconnect the connector.
Start the engine and switch on the low beam.
Speed up engine up to 2500 rpm.
Measure voltage across the green (V) and blue (B) wires using a multimeter: Correct reading = 12.25±1 VDC.
Measure voltage across the yellow (G) and blue (B) wires using a multimeter: Correct reading = 8.5±1 VAC.
Note. Any readings other than the specified values indicate a fault in the system, not in the control unit.
Solenoid
Check that the piston moves freely.
Start the engine and let it idle.
Measure resistance across the wires using a multimeter: Correct reading = 2.2 Ohms±10%.
Measure voltage across the solenoid wires using a multimeter: Correct reading = 11.5±1 V at idling speed during a single one-second pulse. After this initial pulse, reading should drop to 5.5±1 VDC.