Transaxle/Transmission Cooling - 6F35

Transaxle Cooling

Pinpoint Tests

Refer to Wiring Diagram Set 30, Transmission Controls-6F35 for schematic and connector information Electrical Diagrams.

PINPOINT TEST A : TRANSMISSION OVERTEMPERATURE CONDITION

A1 CHECK FOR VOLTAGE AT TRANSMISSION CONTROL VALVE - TRANSMISSION FLUID CONNECTOR

- Disconnect: Temperature Control Valve- Transmission Fluid C1702.

- Ignition ON.

- Measure the voltage between temperature control valve- transmission fluid C1702-1, circuit CBB91 (BN), vehicle harness side and ground.






Is the voltage greater than 10 volts?

Yes
GO to A3.

No
GO to A2.

A2 CHECK FUSE 91 (5A)

- Remove Battery Junction Box (BJB) fuse 91 (5A).

- Check fuse: BJB (Battery Junction Box) fuse 91 (5A).

Is the resistance less than 5 ohms?

Yes
REPAIR circuit CBB91(BN/VT-GY) for an open. CLEAR the DTCs. TEST the system for normal operation.

No
REPAIR circuit CBB91(BN/VT-GY) for a short to ground. CLEAR the DTCs. TEST the system for normal operation.

A3 CHECK THE CONTROL CIRCUIT FOR A SHORT TO GROUND

- Ignition OFF.

- Remove Battery Junction Box (BJB) fuse 91 (5A).

- Disconnect: TCM (Transmission Control Module) C1750.

- Measure the resistance between temperature control valve- transmission fluid C1702-2, circuit CET45 (YE/BU), vehicle harness side and ground.






Is the resistance greater than 10,000 ohms?

Yes
GO to A4.

No
REPAIR circuit CET45 (YE/BU) for a short to ground. CLEAR the DTCs. TEST the system for normal operation.

A4 CHECK THE CONTROL CIRCUIT FOR AN OPEN

- Measure the resistance between temperature control valve- transmission fluid C1702-2, circuit CET45 (YE/BU) and TCM (Transmission Control Module) C1750-14.






- Measure the resistance between temperature control valve- transmission fluid C1702-2, circuit CET45 (YE/BU) and temperature control valve- transmission fluid C1702-1.






Is the resistance less than 5 ohms?

Yes
GO to A5.

No
REPAIR circuit CET45 (YE/BU) for an open. CLEAR the DTCs. TEST the system for normal operation.

A5 CHECK TEMPERATURE CONTROL VALVE SOLENOID - TRANSMISSION FLUID

- Measure the resistance between pin 1 and pin 2 of the temperature control valve solenoid- transmission fluid, component side.






Is the resistance between 20 and 30 ohms?

Yes
INSTALL a new TCM (Transmission Control Module). CONNECT all components. TEST the system for normal operation.

No
INSTALL a new temperature control valve - transmission fluid. CLEAR the DTCs. TEST the system for normal operation.