Pinpoint Test E: Park Neutral Signal

Pinpoint Tests - Non OSC Equipped Vehicle

Pinpoint Tests

PINPOINT TEST E: PARK NEUTRAL SIGNAL

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

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E1 CHECK FOR VOLTAGE ON CIRCUIT CET40 (GN/OG)


- Disconnect: Transmission Control Module (TCM) C1533.
- Ignition ON.
- Selector lever in PARK or NEUTRAL.
- Measure the voltage between C1533-5, circuit CET40 (GN/OG) and chassis ground.




- Is the voltage between 0-0.8 volt?

Yes
GO to E2.

No
GO to E3.

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E2 CHECK FOR VOLTAGE ON CIRCUIT CET40 (GN/OG)


- Selector lever in REVERSE, DRIVE or LOW.
- Measure the voltage between C1533-5, circuit CET40 (GN/OG) and chassis ground.




- Is the voltage greater than 10 volts?

Yes
INSTALL a new TCM. After installing the new TCM, VERIFY that the starting system is operating correctly.

No
GO to E3.

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


- Disconnect: PCM C175B.
- 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
REPAIR circuit CET40 (GN/OG) for a short to ground.

No
INSTALL a new PCM. After installing the new PCM, VERIFY that the starting system is operating correctly.

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