46
T51002 E
InstallatIon, servIce and troubleshootIng Procedures
A. If included: The current PRO controller
includes a test port vent tool that threads into
the test port (Figure 47) in the STORE position.
To perform a lamp test:
i. Open controller.
ii. Unthread the test port vent from the test
port. Vent should be in STORE position.
iii. Reverse the test port vent and reinstall
in the TEST position. In this position, the
inner pin allows air to pass out the port.
NOTE: The controller cover will not properly close
if the test port vent is installed in the TEST
position.
B. If included: Open petcock on controller
(Figure 47) to generate air flow across internal
flow switch.
NOTE: A petcock is included on previous version
of the PRO controller, if not present, use
method A. A petcock is still present on the CP
controller.
3. Observe indicator lamp:
A. If illuminated, both indicator lamp and
controller flow switch are working properly.
B. If indicator lamp is NOT illuminated:
i. Check continuity at controller connector.
If the flow switch is working, the circuit
should be closed. If circuit is open,
replace controller.
ii. Apply 12 VDC power directly to the lamp.
If indicator lamp is not on, replace the
indicator.
iii. If indicator lamp is still not on, check
wiring.
4. Test complete:
A. If included: Unthread test port vent, reinstall
in the STORE position and close the controller
cover.
B. If included: Completely close petcock at
controller.
MANUALLY CHECK TIRE PRESSURE
WARNING: To prevent injury, always wear eye
protection when maintaining or
servicing the vehicle.
NOTE: Check valves in the tire hoses help prevent tire
pressure loss when a tire hose is removed.
You may experience a slight burst of air when
the hose is disconnected.
Figure 48:
Manually checking tire pressure
To manually check tire pressure (Figure 48):
• Turn vehicle off.
• Disconnect tire hose from hubcap.
• Use a conventional gauge to measure tire pressure
at hose end.
• Inspect tire hose O-rings for nicks or cuts. Replace
as needed.
• Reattach and firmly hand-tighten tire hose. Refer
to TIRE HOSE INSTALLATION on page 23 for
details.
NOTICE: Do not overtighten the tire hose at
the tire valve stem or the internal
tire hose seal may be damaged.
Ensure tire hoses are not stretched or
rubbing on the wheel.
Tire hose
Tire pressure gauge
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