For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Lighting Systems Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
2 |

1. Turn ON the ignition.
2. Test the fuse output-ignition circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

System OK

Go to Step 3

3 | With the transmission gear selector in park, test the back-up lamp feed circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | System OK | Go to Step 4
4 |

1. Set the parking brake.
2. Put the transmission selector in reverse.
3. Test the back-up lamp feed circuit for a short to ground. Refer to Circuit Testing in Wiring Systems.

Did you find a short to ground?

--

Go to Step 5

Go to Testing for Electrical Intermittents

5 | Replace the park neutral position switch Refer to LINK in Automatic Transaxle-4T40-E/4T45-E Did you complete the replacement? | -- | System OK | --
6 |

1. Turn ON the ignition.
2. Test the fuse output-ignition circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

System OK

Go to Step 7

7 | With the transmission gear selector in park, test the back-up lamp feed circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | System OK | Go to Step 8
8 |

1. Set the parking brake.
2. Put the transmission selector in reverse.
3. Test the back-up lamp feed circuit for battery voltage. Refer to Circuit Testing in Wiring Systems.

Did the voltage measure to specified value?

B+

Go to Step 9

Go to Step 5

9 | Test the ground circuit on each back-up bulb for an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | System OK | Go to Diagnostic System Check - Lighting Systems