1. Disconnect the height sensor electrical connector.
2. Measure the voltage from the height sensor connector (vehicle side), terminal C, to ground using a J 39200.

Is measurement greater than the specified value?

10.0 V

Go to Step 3

Go to Step 2

Repair the open in CKT 2340 (ORN) between the height sensor and the rear junction block.

Is the repair complete?

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Go to Automatic Level Control System Operation Check

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Measure the voltage from the height sensor connector (vehicle side), terminal C to terminal A, using a J 39200.

Is the measurement greater than the specified value?

10.0 V

Go to Step 5

Go to Step 4

Repair the open in CKT 850 (BLK).

Is the repair complete?

--

Go to Automatic Level Control System Operation Check

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1. Turn the ignition switch ON.
2. Measure the voltage from the height sensor connector (vehicle side), terminal D to terminal A, using a J 39200.

Is the measurement greater than the specified value?

10.0 V

Go to Step 7

Go to Step 6

Repair the open in CKT 41 (BRN).

Is the repair complete?

--

Go to Automatic Level Control System Operation Check

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1. Inspect the height sensor connector for proper terminal contact.
2. Reconnect the height sensor connector.
3. Cycle the ignition switch and return the ignition switch to ON.
4. Observe the compressor operation for one of the following actions.

•	The air compressor operates for 3 to 5 seconds after an initial 35 to 55 second delay?

•	The exhaust solenoid valve opens after a 17 to 27 second delay, then the air compressor operates for 3 to 5 seconds after an additional 15 to 35 second delay.

•	The air compressor operates after a 17 to 27 second delay.

Was one of the compressor actions observed?

--

Go to Step 9

Go to Step 8

Replace the height sensor. Refer to Automatic Level Control Sensor and Bracket Replacement .

Is the replacement complete?

--

Go to Automatic Level Control System Operation Check

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Important: The vehicle must be raised on a drive-on lift. The full vehicle weight must be on the rear tires.

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle
2. Disconnect the link from the position sensor.
3. Move the height sensor arm up so that it is approximately 45 degrees above level (to the floor).

Did the air compressor run after the 17-27 second delay?

--

Go to Step 11

Go to Step 10

Replace the height sensor. Refer to Automatic Level Control Sensor and Bracket Replacement .

Is the replacement complete?

--

Go to Automatic Level Control System Operation Check

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Move the height sensor down slowly until the air compressor stops.

Did the air compressor stop?

--

Go to Step 13

Go to Step 12

Replace the height sensor. Refer to Automatic Level Control Sensor and Bracket Replacement .

Is the replacement complete?

--

Go to Automatic Level Control System Operation Check

--

Move the height sensor arm down so that it is approximately 45 degrees below level (to the floor).

After a 17-27 second delay, did air escape from the air compressor as the vehicle began to lower?

--

Go to Step 15

Go to Step 14

Replace the height sensor. Refer to Automatic Level Control Sensor and Bracket Replacement .

Is the replacement complete?

--

Go to Automatic Level Control System Operation Check

--

Adjust the height sensor. Refer to Automatic Level Control Sensor Adjustment .

Is the adjustment complete?

--

Go to Automatic Level Control System Operation Check

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