Were you sent here from the Backup Lamps System Check?

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Go to Step 2

Go to Backup Lamp System Check

Does the vehicle have an automatic transaxle?

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Go to Step 3

Go to Step 4

1. Turn the ignition switch to the ON position.
2. Disconnect the park/neutral position (PNP) switch connector.
3. Using a J 35616-200 probe the corresponding cavities of the appropriate drivetrain:

•	cavity 4 (4 SP A/T)

•	cavity 6 (3 SP A/T)

Does the test lamp illuminate?

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Go to Step 10

Go to Step 5

1. Turn the ignition switch to the ON position.
2. Disconnect the backup lamp switch connector.
3. Using a J 35616-200 probe cavity 2 of the backup lamp switch.

Does the test lamp illuminate?

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Go to Step 11

Go to Step 6

Using a J 35616-200 backprobe SP258 C2 to ground.

Does the test lamp illuminate?

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Go to Step 7

Go to Step 9

Using a J 35616-200 backprobe SP258 C2 to ground.

Does the test lamp illuminate?

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Go to Step 8

Go to Step 9

Repair the open in the RED/BLU wire between the SP258, C2 and the park/neutral position switch connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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Repair the open in the RED/BLU wire between the SP258, C2 and the backup lamp switch connector cavity 2. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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Repair the open in the RED/BLU wire between cavity C1 of SP258 and cavity 9 of connector C2 of junction block 2. refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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With the park/neutral position switch connector still disconnected;

1. Put the vehicle into reverse.
2. Test for continuity using a J 39200 between cavities:

•	4 and 8 (4 SPD A/T)

•	5 and 6 (3 SPD A/T)

Is there continuity?

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Go to Step 14

Go to Step 12

With the Park/Neutral position switch connector still disconnected;

1. Put the vehicle into reverse.
2. Test for continuity using a J 39200 between cavities 1 and 2 of the backup lamp switch.

Is there continuity?

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Go to Step 15

Go to Step 13

Replace the Park/Neutral position switch. Refer to Park/Neutral Position Switch Replacement in Automatic Transmission.

Is the replacement complete?

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Go to Backup Lamp System Check

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Replace the backup lamp switch. Refer to Backup Lamp Switch Replacement .

Is the replacement complete?

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Go to Backup Lamp System Check

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Test for continuity using a J 39200 between cavity 9 of connector C3 of junction block 1 and connector cavities:

Is there continuity?

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Go to Step 18

Go to Step 16

Test for continuity using a J 39200 between cavity 9 of connector C3 of junction block 1 and connector cavity 1 of the backup lamp switch.

Is there continuity?

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Go to Step 18

Go to Step 17

Repair the open in the RED/BLK wire between cavity 9 of connector C3 of junction block 1 and the park/neutral position switch (PNP) connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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Repair the open in the RED/BLK wire between cavity 9 of connector C3 of junction block 1 and cavity 1 of the backup lamp switch. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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Repair the open in the RED/BLK wire between the junction block 1, connector C3 cavity 9 and SP450. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Backup Lamp System Check

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