For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: This test checks the condition of the inflator timer-relay and the surrounding circuits.
1 |

1. Turn the ignition ON.
2. Put the inflator switch in the ON position.
3. Put the inflator switch in the OFF position.

Does the air compressor operate and then stop?

--

Go to Inflator Solenoid Valve Test

Go to Step 2

2 |

1. Disconnect the connector from the inflator timer-relay.
2. Measure the voltage at connector (harness side) terminal E.

Is battery voltage present?

B+

Go to Step 4

Go to Step 3

3 | Repair the open circuit condition in one of the following circuits/components:

• | CKT 321 (YEL) between the inflator timer-relay and the IP junction block

• | ELC relay

• | CKT 641 (BRN) from the IP junction block to the IP fuse block

Is the repair or replacement complete?

--

Go to Automatic Level Control System Operation Check

--

4 | Measure the voltage at connector (harness side) terminal D. Is battery voltage present? | B+ | Go to Step 6 | Go to Step 5
5 | Repair the open circuit condition in CKT 1042 (RED) between the inflator timer relay and the RH MaxiFuse® block. Is the repair complete? | -- | Go to Automatic Level Control System Operation Check | --
6 | Check for continuity between the connector (harness side) terminal H and ground. Is continuity present? | -- | Go to Step 8 | Go to Step 7
7 | Repair the open circuit condition in CKT 1250 (BLK). Is the repair complete? | -- | Go to Automatic Level Control System Operation Check | --
8 |

1. Hold the inflator switch in the OFF position.
2. Check for continuity between the connector (harness side) terminal A and ground.

Is continuity present?

--

Go to Step 9

Go to Inflator Switch Test

9 |

1. Hold the inflator switch in the ON position.
2. Check for continuity between the connector (harness side) terminal F and ground.

Is continuity present?

--

Go to Step 10

Go to Inflator Switch Test

10 | Replace the inflator timer-relay. Is the replacement complete? |  | Go to Automatic Level Control System Operation Check | --