Pinpoint Test B : Paddle Shifters Are Inoperative Or Do Not Operate Properly
- NOTE: If TR sensor Diagnostic Trouble Codes (DTCs) are present, the Paddle Shift feature may not be operational.
Refer to TRANSMISSION CONTROLS for schematic and connector information.
Normal Operation and Fault Conditions
The paddle shift switch is integral to the steering wheel. When the selector lever is placed in the sport shift (S) mode the upshift/downshift feature becomes activated and allows the operator to upshift or downshift without removing their hands from the steering wheel. If a new switch is required install a new paddle shift assembly.
Possible Sources
- Circuitry open/shorted
- Paddle shift switch(es)
- Clockspring
- SCCM
- PCM
- B1 RETRIEVE AND RECORD ALL DTCS
- Using the diagnostic scan tool, retrieve all DTCs.
Are TR DTCs present?
Yes RESOLVE any TR DTCs first. REFER to: Automatic Transmission - 2.0L Duratec-HE (125kW/170PS) - MI4/2.0L Duratec-HE Flex Fuel (129kW/175PS) . No If the vehicle displays the symptom, the upshift switch is inoperative, GO to B2 If the downshift switch is inoperative, GO to B6 If neither switch operates test the signal return circuit, GO to B10 Otherwise if no symptoms are displayed, the system is operating correctly at this time. The concern may have been caused by a loose connector. ADDRESS the root cause of any connector or terminal issues. - B2 CHECK THE UPSHIFT SIGNAL CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Disconnect Upshift Paddle Shifter C2428.
- Inspect the connector for damaged or pushed-out terminals.
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C2428-2 Ground
Is the voltage greater than 11 volts?
Yes GO to B5 No GO to B3 - B3 CHECK THE UPSHIFT SWITCH POWER CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect PCM C1915B.
- Inspect the connector for damaged or pushed-out terminals.
- Measure:
For vehicles equipped with the 1.0L
Positive Lead Measurement / Action Negative Lead C2428-2 C1381E-23 For vehicles equipped with the 1.5L
Positive Lead Measurement / Action Negative Lead C2428-2 C1915B-23 For vehicles equipped with the 2.0L
Positive Lead Measurement / Action Negative Lead C2428-2 C1915B-89
Is the resistance less than 3 ohms?
Yes GO to B4 No GO to B10 - B4 CHECK THE UPSHIFT SWITCH POWER CIRCUIT FOR A SHORT TO GROUND
Is the resistance greater than 10, 000 ohms?
Yes Refer to PCM GUIDED ROUTINE TESTING No REPAIR the circuit. - B5 CHECK THE PADDLE SHIFT SWITCH
- Measure:
Positive Lead Measurement / Action Negative Lead Component side resistance pin 10. Component side resistance pin 11.
Is the resistance less than 1.5 ohms with upshift selected and greater than 10, 000 ohms when released?
Yes GO to B10 No INSTALL a new upshift paddle switch. REFER to: Upshift Paddle Switch . - Measure:
- B6 CHECK THE DOWNSHIFT SWITCH POWER CIRCUIT FOR VOLTAGE
- Ignition OFF.
- Disconnect SCCM C2414A.
- Inspect the connector for damaged or pushed-out terminals.
- Ignition ON.
Is the voltage greater than 11 volts?
Yes GO to B9 No GO to B7 - B7 CHECK THE DOWNSHIFT SWITCH POWER CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect PCM C1915B.
- Inspect the connector for damaged or pushed-out terminals.
- Measure:
For vehicles equipped with the 1.0L
Positive Lead Measurement / Action Negative Lead C2428-2 C1381E-23 For vehicles equipped with the 1.5L
Positive Lead Measurement / Action Negative Lead C2429-2 C1915B-22 For vehicles equipped with the 2.0L
Positive Lead Measurement / Action Negative Lead C2429-2 C1915B-88
Is the resistance less than 3 ohms?
Yes GO to B8 No GO to B10 - B8 CHECK THE DOWNSHIFT SWITCH POWER CIRCUIT FOR A SHORT TO GROUND
- Measure:
Positive Lead Measurement / Action Negative Lead C2429-2 Ground
Is the resistance greater than 10, 000 ohms?
Yes REPAIR the circuit. If an open circuit is not found, Refer to PCM GUIDED ROUTINE TESTING No REPAIR the circuit. - Measure:
- B9 CHECK THE PADDLE SHIFT DOWNSHIFT SWITCH
- Measure:
Positive Lead Measurement / Action Negative Lead Component side resistance pin 9. Component side resistance pin 11.
Is the resistance less than 1.5 ohms with downshift selected and greater than 10, 000 ohms when released?
Yes In the next step test the signal return circuit. GO to B10 No INSTALL a new paddle shift downshift switch. REFER to: Downshift Paddle Switch . - Measure:
- B10 CHECK THE CIRCUITS FOR AN OPEN
- Disconnect Clockspring C218B.
- For the upshift circuit, measure:
Positive Lead Measurement / Action Negative Lead C218B-1 C2428-2
- For the downshift circuit, measure:
Positive Lead Measurement / Action Negative Lead C218B-2 C2429-2
- For the signal return circuit, measure:
Positive Lead Measurement / Action Negative Lead C218B-3 C2428-3 C218B-3 C2429-3
Are the resistances less than 3 ohms?
Yes GO to B11 No REPAIR the circuit. - B11 CHECK THE CIRCUITS (PCM SIDE) FOR AN OPEN
- Disconnect SCCM C226B.
- Disconnect PCM For vehicles equipped with the 1.0L, C1381B.
- Disconnect PCM C1915B.
- For the upshift circuit, measure:
For the 1.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C2428-2 C1381B-23 For the 1.5L upshift circuit.
Positive Lead Measurement / Action Negative Lead C226B-5 C1915B-89 For the 2.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C2428-2 C1915B-89
- For the downshift circuit, measure:
For the 1.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C226B-5 C1381B-88 For the 1.5L upshift circuit.
Positive Lead Measurement / Action Negative Lead C226B-5 C1915B-22 For the 2.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C2428-2 C1915B-88
- For the signal return circuit, measure:
For the 1.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C2428-2 C1915B-7 For the 1.5L upshift circuit.
Positive Lead Measurement / Action Negative Lead C226B-5 C1915B-13 For the 2.0L upshift circuit.
Positive Lead Measurement / Action Negative Lead C226B-5 C1915B-7
Are the resistances less than 3 ohms?
Yes GO to B12 No REPAIR the circuit. - B12 CHECK THE CLOCKSPRING FOR AN OPEN
- Disconnect Clockspring C218C If not already disconnected.
- Disconnect Clockspring C218B If not already disconnected.
- Measure:
Upshift circuit
Positive Lead Measurement / Action Negative Lead Clockspring, (C218C) component side, pin 2 Clockspring, (C218B) component side, pin 1
- Measure:
Downshift circuit
Positive Lead Measurement / Action Negative Lead Clockspring, (C218C) component side, pin 3 Clockspring, (C218B) component side, pin 2
- Measure:
Signal Return circuit
Positive Lead Measurement / Action Negative Lead Clockspring, (C218C) component side, pin 4 Clockspring, (C218B) component side, pin 3
Are the resistances less than 3 ohms?
Yes INSTALL a new SCCM. REFER to: Steering Column Control Module (SCCM) . No INSTALL a new clockspring. REFER to: Clockspring . .