Step
| Action
| Value(s)
| Yes
| No
|
1
|
- Disconnect the auto level control air inflator relay connector
and the auto level control air compressor connector.
- Replace ELC and/or MALL/RADIO/DIC fuse if it is blown.
- Turn the ignition switch to the ON position.
- Using a test light, frontprobe the auto level control air compressor
harness connector from terminal A. terminal C, and terminal E to ground. Frontprobe
auto level control air inflator relay harness connector from terminal D
to ground.
Does the test light come on in all four checks?
| --
|
Go to Step 3
|
Go to Step
2
|
2
|
- Repair a short to ground in circuit 1240 or circuit 43.
- Replace ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer shorts out under
same conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Has the repair been made and the system rechecked?
| --
| System OK
| --
|
3
|
- Disconnect the auto level control air inflator relay and the auto
level control sensor harness connectors.
- Using a test light, backprobe from B+ to the auto level control
air inflator relay harness connector terminal B and terminal C.
Is the test light on?
| --
|
Go to Step
12
|
Go to Step 4
|
4
| Reconnect the auto level control air compressor harness connector.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 8
|
Go to Step
5
|
5
|
- Reconnect the auto level control air inflator relay, auto level
control sensor, and the auto level control air solenoid valve harness connectors.
- Replace ELC and/or MALL/RADIO/DIC fuse if necessary.
- Load rear of passenger compartment with 181 kg (400 lbs),
enough to activate compressor.
- Turn vehicle ignition to RUN.
- Listen closely to auto level control air compressor for 1 minute.
Is the ELC and/or MALL/RADIO/DIC fuse OK and does the solenoid click
after approximately 40 seconds.
| --
|
Go to Step
7
|
Go to Step 6
|
6
|
- Disconnect the auto level control air compressor harness connector.
- While listening closely to auto level control air inflator solenoid,
connect a 20 A fused jumper to the auto level control air compressor
harness connector from terminal B to ground and from B+ to terminal C.
Does solenoid click and are the fuses in jumpers OK?
| --
|
Go to Step 9
|
Go to Step 7
|
7
|
- Replace the auto level control air compressor head. Refer to
Automatic Level Control Air Compressor Head Replacement
in Automatic Level Control.
- Reconnect the auto level control air compressor harness connector.
- Replace ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 8
| System OK
|
8
|
- Replace auto level control air compressor. Refer to
Air Compressor Replacement
in Automatic Level Control.
- Replace fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 9
| System OK
|
9
|
- Replace auto level control air inflator relay. Refer to
Automatic Level Control Relay Replacement
for long wheel base with HVAC, or
Automatic Level Control Relay Replacement
for long wheel base without HVAC, or
Automatic Level Control Relay Replacement
for short
wheel base in Automatic Level Control.
- Replace the ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 11
| System OK
|
10
|
- Replace auto level control air compressor. Refer to
Air Compressor Replacement
in Automatic Level Control.
- Replace the ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 10
| System OK
|
11
|
- Replace auto level control sensor. Refer to
Automatic Level Control Sensor Replacement
in Automatic Level
Control.
- Replace the ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 8
| System OK
|
12
|
- Replace auto level control air inflator solenoid valve. Refer
to
Inflator Solenoid Replacement
for long wheel base with HVAC, or
Inflator Solenoid Replacement
for long wheel base without HVAC, or
Inflator Solenoid Replacement
for short wheel base in Automatic Level Control.
- Replace the ELC and/or MALL/RADIO/DIC fuse if necessary.
- Perform system check to verify fuse no longer blows under same
conditions. Refer to
Automatic Level Control System Operation Check
in Automatic Level Control.
Is the ELC and/or MALL/RADIO/DIC fuse blown?
| --
|
Go to Step 13
| System OK
|
13
| Check for a short to ground in
circuit 1248.
Is there a short to ground in circuit 1248?
| --
|
Go to Step 14
|
Go to Step
15
|
14
| Repair a short to ground in either circuit 1248.
Has the repair been made and the system rechecked?
| --
| System OK
| --
|
15
| Check for
a short to ground in circuit 1249.
Is there a short to ground in circuit 1249?
| --
|
Go to Step 16
|
Go to Step
17
|
16
| Repair a short to ground in circuit 1249.
Has the repair been made and the system rechecked?
| --
| System OK
| --
|
17
| Check for
a short to ground in circuit 1240.
Is there a short to ground in circuit 1240?
| --
|
Go to Step 18
| System OK
|
18
| Repair a short to ground in circuit
1240.
Has the repair been made and the system rechecked?
| --
| System OK
| --
|
