Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Automatic Level Control Schematics | |||
1 | Did you review the automatic level control suspension system operation and perform the necessary inspections? | Go to Step 2 | |
2 | Verify that the automatic level control compressor motor is always on. Does the automatic level control system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the automatic level control air compressor pump stop running? | Go to Step 4 | Go to Step 6 |
4 | Connect a test lamp between the electronic level control on signal circuit of the ALC timer relay and the battery positive voltage circuit of the ALC timer relay. Does the test lamp illuminate? | Go to Step 5 | Go to Step 13 |
5 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 12 |
6 | Disconnect the automatic level control sensor. Does the automatic level control air compressor pump stop running? | Go to Step 14 | Go to Step 7 |
7 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 8 |
8 |
Does the automatic level control air compressor pump run? | Go to Step 11 | Go to Step 15 |
9 | Repair the short to ground in the automatic level control on signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
10 | Repair the short to ground in automatic level control relay coil supply voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
11 | Repair the short to voltage between the automatic level control compressor motor and the automatic level control compressor relay on the automatic level control motor relay output circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 16 | -- |
12 | Replace the automatic level control inflator air switch. Refer to Automatic Level Control Inflator Air Switch Replacement . Did you complete the replacement? | Go to Step 16 | -- |
13 | Replace the automatic level control timer relay. Refer to Automatic Level Control Relay Replacement . Did you complete the replacement? | Go to Step 16 | -- |
14 | Replace the automatic level control sensor. Refer to Automatic Level Control Sensor and Bracket Replacement . Did you complete the replacement? | Go to Step 16 | -- |
15 | Replace the relay in the automatic level control air compressor. Refer to Air Compressor Replacement . Did you complete the replacement? | Go to Step 16 | -- |
16 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
