ELC Height Sensor Test

1. Disconnect electrical connector from ELC height sensor and turn ignition switch to Run position.
2. Measure voltage between connector terminal 6 (light blue wire) and ground. If voltmeter does not indicate battery voltage, check circuit 926 (light blue wire) for an open and repair as necessary. If circuit is satisfactory, perform ``Inflator Timer Relay Test.''
3. Measure voltage between connector terminals 6 (light blue wire ) and 4 (black wire). If voltmeter does not indicate battery voltage, locate and repair open in circuit 151 (black wire).
4. Measure voltage between connector terminal 5 (pink wire) and ground. If voltmeter does not indicate battery voltage, locate and repair open in circuit 39 (pink wire).
5. Measure voltage between connector terminal 3 (yellow wire) and ground. If voltmeter does not indicate battery voltage, locate and repair open in circuit 321 (yellow wire).
6. If battery voltage is indicated in steps 2 through 5, proceed as follows:
a. Cycle ignition switch on and off, leaving in the Run position.
b. Raise and support vehicle. Support vehicle as close as possible to trim height specifications.
c. Disconnect link from actuator arm and move arm upward. If compressor runs after an 8-15 second delay and the vehicle raises, proceed to step 6d. If compressor does not run, replace ELC height sensor. If compressor runs, but shocks do not inflate, check compressor operation and check system for leaks.
d. Slowly move actuator arm downward. If compressor stops, proceed to step 6e. If compressor does not stop, replace ELC height sensor.
e. Continue to move actuator arm downward. If shocks deflate and vehicle lowers after an 8---15 second delay, the ELC height sensor is operating normally. If shocks do not deflate, the height sensor is defective and must be replaced.