Pinpoint Test H: Transaxle Fluid Pressure Switch

Pinpoint Tests - OSC Equipped Vehicle

PINPOINT TEST H: TRANSAXLE FLUID PRESSURE SWITCH

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H1 CHECK THE HARNESS FOR A SHORT TO GROUND


- Ignition OFF.
- Disconnect: Transmission Control Module (TCM) C2352B.
- Disconnect: Transmission Fluid Pressure Switch C1536.
- Measure the resistance between transmission fluid pressure switch connector C1536, circuit CET46 (YE/GN) and ground.




- Is the resistance greater than 10,000 ohms?

Yes
GO to H2.

No
REPAIR circuit CET46 (YE/GN) for a short to ground. TEST the system for normal operation.

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H2 CHECK THE HARNESS FOR AN OPEN


- Measure the resistance between transmission fluid pressure switch C1536, circuit CET46 (YE/GN) and TCM C2352B-20, circuit CET46 (YE/GN).




- Is the resistance less than 5 ohms?

Yes
GO to H3.

No
REPAIR circuit CET46 (YE/GN) for an open. TEST the system for normal operation.

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H3 CHECK THE OIL PRESSURE SWITCH


- Connect: TCM C2352B.
- Start the engine.
- Measure the resistance between transmission fluid pressure switch and ground with the selector lever in PARK and DRIVE.




- Is the resistance greater than 10,000 ohms in PARK and less than 5 ohms in DRIVE?

Yes
INSTALL a new TCM. TEST the system for normal operation.

No
INSTALL a new transmission fluid pressure switch. TEST the system for normal operation.

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