Automatic Level Control System Does Not Vent to Lower Vehicle with Inflator
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Automatic Level Control Schematics | |||
1 | Did you review the Automatic Level Control System Description and Operation and perform the necessary inspections? | ||
2 |
Does the test lamp illuminate? | ||
3 | Connect a test lamp between the auto level control power input circuit and the ground circuit of the ALC sensor. Does the test lamp illuminate? | ||
4 |
Does the test lamp illuminate? | ||
5 | Connect a 10 A fused jumper wire between the auto level control exhaust solenoid output circuit of the ALC sensor and a good ground. Does the exhaust solenoid activate and vent air? | ||
6 | Inspect the fuse in the jumper wire. Did the fuse in the jumper open? | ||
7 |
Does the test lamp illuminate? | ||
8 | Connect a test lamp between terminal C and terminal B of the ALC air compressor connector. Does the test lamp illuminate? | ||
9 | Probe with a test lamp between the battery positive voltage circuit of the ALC air inflator relay and a good ground. Does the test lamp illuminate? | ||
10 | Probe with a test lamp between the auto level control power input circuit of the ALC air inflator relay and a good ground. Does the test lamp illuminate? | ||
11 | Repair the open in the battery positive voltage circuit of the ALC air compressor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
12 | Repair the open in the auto level control exhaust solenoid control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
13 | Repair the open in the ground circuit of the ALC sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
14 | Repair the open in the fused ignition 2 feed circuit of the ALC sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
15 | Repair the short to voltage in the auto level control exhaust solenoid control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
16 | Repair the open in the battery positive voltage circuit of the ALC air inflator relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
17 | Repair the open in the auto level control power input circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
18 | Replace the ALC air inflator relay. Refer to Automatic Level Control Relay Replacement . Did you complete the replacement? | -- | |
19 | Replace the ALC sensor. Refer to Automatic Level Control Sensor Replacement . Did you complete the replacement? | -- | |
20 | Replace the ALC air compressor head. Refer to Automatic Level Control Air Compressor Head Replacement . Did you complete the replacement? | -- | |
21 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | |
Automatic Level Control System Does Not Vent to Lower Vehicle without Inflator
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Automatic Level Control Schematics | |||
1 | Did you review the Automatic Level Control System Description and Operation and perform the necessary inspections? | ||
2 |
Does the test lamp illuminate? | ||
3 | Connect a test lamp between the battery positive voltage circuit and the ground circuit of the ALC sensor. Does the test lamp illuminate? | ||
4 |
Does the test lamp illuminate? | ||
5 | Connect a 10 A fused jumper wire between the automatic level control exhaust solenoid control circuit of the ALC sensor and a good ground. Does the exhaust solenoid activate and vent air? | ||
6 | Inspect the fuse in the jumper wire. Did the fuse in the jumper open? | ||
7 |
Does the test lamp illuminate? | ||
8 | Connect a test lamp between terminal C and terminal B of the ALC air compressor connector. Does the test lamp illuminate? | ||
9 | Repair the open in the battery positive voltage circuit of the ALC air compressor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
10 | Repair the open in the automatic level control exhaust solenoid control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
11 | Repair the open in the ground circuit of the ALC sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
12 | Repair the open in the accessory voltage circuit of the ALC sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
13 | Repair the short to voltage in the automatic level control exhaust solenoid control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
14 | Repair the open in the battery positive voltage circuit of the ALC sensor. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | |
15 | Replace the ALC sensor. Refer to Automatic Level Control Sensor Replacement . Did you complete the replacement? | -- | |
16 | Replace the ALC air compressor head. Refer to Automatic Level Control Air Compressor Head Replacement . Did you complete the replacement? | -- | |
17 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | |
