Automatic Transmission External Controls Pinpoint Test 3: The Transmission Control Switch (Over-Drive Od, On/Off) Is Not Operating Properly

TRANSMISSION CONTROL SWITCH (OVERDRIVE ON/OFF) IS NOT OPERATING PROPERLY - PINPOINT TEST REFERENCE

PINPOINT TEST 3		TRANSMISSION CONTROL SWITCH (OVERDRIVE ON/OFF) IS NOT OPERATING PROPERLY
STEP	INSPECTION		ACTION
1	CHECK SMART JUNCTION BOX (SJB) FUSE 20(10A) Key OFF. Measure resistance of SJB fuse 20 (10A). Is the resistance less than 5 ohms?	Yes	Reinstall the fuse. Go to step 3.
1		No	Go to the next step.
2	CHECK THE VOLTAGE TO THE TRANSMISSION CONTROL SWITCH (TCS) Key OFF. Disconnect: Transmission control switch (TCS) connector 0140-13. Key ON. Measure the voltage on circuit (Y/V) at the TCS 0140-13 pin 1 and ground. Is the voltage greater than 10 volts?	Yes	Go to next step.
2		No	Repair the circuit. Test the system for normal operation.
3	CHECK THE TRANSMISSION CONTROL SWITCH (TCS) Measure the resistance between the TCS 0140-13 pin 1 and the TCS 0140-13 pin 2 component side, while pressing and releasing the TCS. Is the resistance less than 5 ohms with the TCS depressed and greater than 10,000 ohms with the TCS released?	Yes	Go to the next step.
3		No	Install a new TCS. Test the system for normal operation.
4	CHECK CIRCUITS (BR/G) FOR AN OPEN Key OFF. Disconnect: PCM Transmission connector 0140-175b. Measure the resistance of circuit (BR/G) between the TCS 0140-13 pin 2 and the PCM 0140-175b pin 8. Is the resistance less than 5 ohms for both circuits?	Yes	Install a new PCM. Test the system for normal operation.
4		No	Repair the circuit. Test the system for normal operation.