Pinpoint Test C: SELECTSHIFT™

WARNING: This page is about a different variant/trim than selected.

C1 RETRIEVE AND RECORD ALL DTCS
- Using the diagnostic scan tool, retrieve all Diagnostic Trouble Codes (DTCs).
IS DTC P0815 or P0816 present?
- Yes : If DTC P0815 is present, GO to C2
- No : If DTC P0816 is present, GO to C7

C2 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR VOLTAGE

Disconnect Floor Shifter C3245 .
Inspect for damaged or pushed-out terminals.
Ignition ON.

Measure the voltage between.

Positive Lead	Measurement/Action	Negative Lead
C3245-9		Ground

Is the voltage greater than 11 volts?

Yes : GO to C5
No : GO to C3

C3 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect TCM C1750A .
Inspect for damaged or pushed-out terminals.

Measure the resistance between.

Positive Lead	Measurement/Action	Negative Lead
C1750A-9		C3245-9

Is the resistance less than 3 ohms?

Yes : GO to C4
No : REPAIR the circuit.

C4 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between.

Positive Lead	Measurement/Action	Negative Lead
C3245-9		Ground

Is the resistance greater than 10, 000 ohms?

Yes : GO to C6
No : REPAIR the circuit.

C5 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN

Measure the voltage between.

Positive Lead	Measurement/Action	Negative Lead
C3245-9		C3245-8

Is the voltage greater than 11 volts?

Yes : GO to C6
No : REPAIR the circuit. If an open circuit is not found, INSTALL a new TCM .
REFER to: TRANSMISSION CONTROL MODULE (TCM) .

C6 CHECK THE SELECTSHIFT™ SWITCH

Disconnect SelectShift™ connector in the selector lever assembly.

Measure the component side resistance while cycling the SelectShift™ upshift switch between.

Positive Lead	Measurement/Action	Negative Lead
C3245-9		C3245-8

Is the resistance less than 1.5 ohms with upshift selected and greater than 10, 000 ohms when released?

Yes : CHECK OASIS for any applicable TSB . If a TSB exists for this concern, discontinue this test and follow the TSB instructions. If no TSB address this concern, INSTALL a new TCM .
REFER to: TRANSMISSION CONTROL MODULE (TCM) .
No : INSTALL a new selector lever knob.
REFER to: SELECTOR LEVER KNOB .

C7 CHECK THE DOWNSHIFT SIGNAL CIRCUIT FOR VOLTAGE

Disconnect Floor Shifter C3245 .
Inspect for damaged or pushed-out terminals.
Ignition ON.

Measure the voltage between.

Positive Lead	Measurement/Action	Negative Lead
C3245-10		Ground

Is the voltage greater than 11 volts?

Yes : GO to C10
No : GO to C8

C8 CHECK THE DOWNSHIFT SIGNAL CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect TCM C1750A .
Inspect for damaged or pushed-out terminals.

Measure the resistance between.

Positive Lead	Measurement/Action	Negative Lead
C1750A-10		C3245-10

Is the resistance less than 3 ohms?

Yes : GO to C9
No : REPAIR the circuit.

C9 CHECK THE DOWNSHIFT SIGNAL CIRCUIT FOR A SHORT TO GROUND

Measure the resistance between.

Positive Lead	Measurement/Action	Negative Lead
C3245-10		Ground

Is the resistance greater than 10, 000 ohms?

Yes : GO to C10
No : REPAIR the circuit.

C10 CHECK THE SIGNAL RETURN CIRCUIT FOR AN OPEN

Measure the voltage between.

Positive Lead	Measurement/Action	Negative Lead
C3245-8		Ground

Is the voltage greater than 11 volts?

Yes : GO to C11
No : REPAIR the circuit. If an open circuit is not found, INSTALL a new TCM .
REFER to: TRANSMISSION CONTROL MODULE (TCM) .

C11 CHECK THE SELECTSHIFT™ SWITCH

Disconnect SelectShift™ connector in the selector lever assembly.

Measure the component side resistance while cycling the SelectShift™ upshift switch between.

Positive Lead	Measurement/Action	Negative Lead
C3245-10		C3245-8

Is the resistance less than 1.5 ohms with upshift selected and greater than 10, 000 ohms when released?

Yes : CHECK OASIS for any applicable TSB . If a TSB exists for this concern, discontinue this test and follow the TSB instructions. If no TSB address this concern, INSTALL a new TCM .
REFER to: TRANSMISSION CONTROL MODULE (TCM) .
No : INSTALL a new selector lever knob.
REFER to: SELECTOR LEVER KNOB .