Inflator Timer Relay Test

1. Connect a suitable fused jumper wire between inflator timer relay connector terminal F (white wire) and ground. If compressor runs and high pressure air flows from air hose when valve is operated, perform ``Inflator Switch Test.'' If compressor runs, but high pressure air does not flow from air hose when valve is operated, leave jumper wire connected and proceed to step 2. If compressor does not run, remove jumper wire and proceed as follows:
a. Ensure inflator switch is off and compressor is not running.
b. Measure voltage between inflator timer relay electrical connector terminal D (orange wire) and ground. If voltmeter does not indicate battery voltage, locate and repair open in circuit 40 (orange wire).
c. Measure voltage between inflator timer relay electrical connector terminal E (yellow wire) and ground. If voltmeter does not indicate battery voltage, locate and repair open in circuit 321 (yellow wire).
d. Measure voltage between inflator timer relay electrical connector terminal B (light blue wire) and ground. If voltmeter does not indicate battery voltage, replace inflator timer relay.
e. Measure voltage between inflator timer relay electrical connector terminals D (orange wire) and H (black wire). If voltmeter does not indicate battery voltage, locate and repair open in circuit 151 (black wire).
f. If battery voltage is measured in steps 2 through 5, replace inflator timer relay.
3. Measure voltage between inflator timer relay electrical connector terminal C (dark blue wire) and ground. If voltmeter indicates battery voltage, perform ``Inflator Solenoid Valve Test.'' If voltmeter does not indicate battery voltage, replace inflator timer relay.