For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you review the operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 |

1. Disconnect the LF window regulator motor connector.
2. Place the ignition switch into the RUN position.
3. Using a test lamp, probe the LF window regulator motor connector between terminals A and B. Refer to Circuit Testing in Wiring Systems.
4. Press the LF window switch UP and then DOWN.

Does the test lamp illuminate after both actions?

--

Go to Step 3

Go to Step 4

3 | Replace the LF window regulator motor. Refer to Front Side Door Window Regulator Replacement . Is the repair complete? | -- | Go to Step 7 | --
4 |

1. Turn the ignition switch to the OFF position.
2. Disconnect the LF window switch.
3. Using a DMM, check circuit 164 and 165 for continuity, and a short to ground. Refer to Circuit Testing in Wiring Systems.

Are either of these conditions present?

--

Go to Step 5

Go to Step 6

5 | Repair the poor connection or open, or short to ground in circuit 164 or 165. Refer to Connector Repairs or Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 7 | --
6 | Replace the LF window switch. Refer to Door Trim Plate Replacement . Is the repair complete? | -- | Go to Step 7 | --
7 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2