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 Cooling System &/or Engine Block Heater 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 Cooling System &/or Engine Block Heater to check starting system.

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

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