Pinpoint Test E: Park Neutral Signal

Pinpoint Tests - OSC Equipped Vehicle

Pinpoint Tests

PINPOINT TEST E: PARK NEUTRAL SIGNAL

NOTE: Refer to the Transaxle Vehicle Harness Connector illustrations within the Transaxle Connector Layouts Transaxle Connector Layouts procedure.

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E1 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG)

- Disconnect: PCM C175B.
- Selector lever in PARK or NEUTRAL.
- Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground.




- Is the resistance between 13 to 40 ohms?

Yes
GO to E2.

No
GO to E3.

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E2 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG)

- Selector lever in REVERSE, DRIVE or M.
- Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground.




- Is the resistance greater than 1000 ohms?

Yes
INSTALL a new TCM. After installing the new TCM, VERIFY that the starting system is operating correctly. If not, REFER to Testing and Inspection to check starting system.

No
GO to E3.

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E3 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR AN OPEN

- Disconnect: Transmission Control Module (TCM) C1533.
- Measure the resistance between C1533-5, circuit CET40 (GN/OG) and C175B-16.




- Is the resistance less than 5 ohms?

Yes
GO to E4.

No
REPAIR circuit CET40 (GN/OG) for an open.

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E4 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR A SHORT TO GROUND

- Measure the resistance between C1533-5, circuit CET40 (GN/OG) and chassis ground.




- Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new PCM. After installing the new PCM, VERIFY that the starting system is operating correctly. If not, REFER to Testing and Inspection to check starting system.

No
REPAIR circuit CET40 (GN/OG) for a short to ground.

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