For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Backup Lights System Check? | -- | Go to Step 2 | Go to Backup Lamp System Check
2 |

1. Turn the ignition switch to the ON position.
2. Disconnect the park/neutral position switch connector C1.
3. Connect a test lamp between the B terminal of connector C1 and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3 | Connect a fused jumper between the B terminal and the F terminal of connector C1 of the park/neutral position switch. Do the backup lamps light? | -- | Go to Step 5 | Go to Step 6
4 | Backprobe the underhood junction block connector C1 with a test lamp between terminal F5 and ground. Does the test lamp light? | -- | Go to Step 7 | Go to Step 8
5 |

1. Inspect the adjustment of the park/neutral position switch.
2. If the adjustment is OK, replace the park/neutral position switch.

Is the repair complete?

--

Go to Backup Lamp System Check

--

6 |

1. Reconnect the park/neutral position switch C1 connector.
2. Place the transaxle in the REVERSE position.
3. Backprobe the right IP junction block C2 connector with a test lamp between the B11 terminal and ground.

Does the test lamp light?

--

Go to Step 9

Go to Step 10

7 | Repair the open in CKT 539 between the underhood junction block and the park/neutral position switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | --
8 | Replace the underhood junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems Is the repair complete? | -- | Go to Backup Lamp System Check | --
9 | Backprobe the right IP junction block C3 connector at the C2 terminal and at the B2 terminal. Does the test lamp light at both terminals? | -- | Go to Backup Lamp Inoperative - One Lamp | Go to Step 11
10 | Repair the open in CKT 24 between the park/neutral position switch and the right IP junction block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | --
11 | Replace the right IP junction block. Refer to Relay/Fuse Center Replacement in Wiring Systems. Is the repair complete? | -- | Go to Backup Lamp System Check | --