Inspection and Verification
- Verify the customer concern by operating the vehicle to duplicate the condition.
- If the inspection reveals an obvious concern(s) that can be readily identified, repair as necessary.
- Install new components if a transmission fluid leak is found in any of the transmission cooling components.
- If the concern(s) remains after the inspection, determine the symptom(s). GO to «SYMPTOM CHART - TRANSMISSION COOLING»(ref-569622-S39265857932013072700000) .
DTC Chart
Diagnostics in this information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to SERVICE INFORMATION .
| DTC | Description | Action |
|---|---|---|
| P1783 | Transmission over temperature condition. | If DTC P2681 is set GO to PINPOINT TEST A . If DTC P26AC is set, GO to PINPOINT TEST B . |
| P2681 | Transmission Fluid Heater Coolant Control Valve | GO to PINPOINT TEST A . |
| P26AC | Transmission Fluid Cooler Coolant Control Valve | GO to PINPOINT TEST B . |
DTC CHART
Symptom Chart - Transmission Cooling
| Condition | Possible Sources | Action |
|---|---|---|
| Transmission overheating | Clogged transmission fluid cooler or transmission fluid cooler tubes Bent or crushed transmission fluid cooler tubes Transmission fluid cooler thermal bypass valve stuck closed (if equipped) | INSPECT the transmission fluid cooler, transmission fluid cooler tubes and transmission fluid cooler thermal bypass valve for damage or plugging. INSTALL new components as necessary. REFER to TRANSMISSION FLUID COOLER TUBES . |
| Transmission fluid cooler coolant control valve is sticking | If DTC P26AC is set GO to PINPOINT TEST B . If not, REFER to ENGINE COOLING . | |
| System leaks | INSPECT transmission fluid cooler and transmission fluid cooler tubes for leaks. SERVICE as required. | |
| Internal transmission concerns | REFER to AUTOMATIC TRANSAXLE - 6F35 . | |
| Vibration - a high frequency (20-80 Hz) that is felt through the seat or selector lever. Changes with engine speed | Transmission fluid cooler tubes grounded | CHECK the transmission fluid cooler tubes. REPAIR as necessary. REFER to TRANSMISSION FLUID COOLER TUBES . |
SYMPTOM CHART - TRANSMISSION COOLING
Pinpoint Test A: P2681
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 2.5L for additition information.
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 2.0L GTDI for additition information.
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 1.6L GTDI for additition information.
Scheme 24
Scheme 25
Scheme 26
Scheme 27
Scheme 28
Scheme 29
Scheme 30
Scheme 31
- A1 READ AND RECORD ALL DTCs Ignition ON. Connect the scan tool. Using a scan tool, retrieve DTCs. Was DTC P2681 set? Yes : GO to A2. No : The issue may not be the Transmission Fluid Heater Coolant Control Valve electrical system. GO to «SYMPTOM CHART»(ref-569622-S39265857932013072700000) .
- A2 CHECK BJB FUSE 34 (10A) Ignition OFF. Remove BJB fuse 34 (10A). Check BJB fuse 34 (10A). Is the resistance less than 5 ohms? Yes : For 1.6L GTDI engines, GO to A5 . For 2.0L GTDI and 2.5L engines, GO to A6 . No : For 1.6L GTDI engines, GO to A3. For 2.0L GTDI and 2.5L engines, GO to A4 .
- A3 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE POWER CIRCUIT FOR A SHORT TO GROUND Disconnect: Transmission Fluid Heater Coolant Control Valve C1702. Inspect for damaged or pushed out terminals. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 CBB34 (VT/BN) - Ground Is the resistance greater than 10, 000 ohms? Yes : GO to A7 . No : REPAIR the circuit. CLEAR the DTC.
- A4 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE POWER CIRCUIT FOR A SHORT TO GROUND Disconnect: Transmission Fluid Heater Coolant Control Valve C1702. Inspect for damaged or pushed out terminals. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 CBK03 (GY) - Ground Is the resistance greater than 10, 000 ohms? Yes : GO to A7 . No : REPAIR the circuit. CLEAR the DTC.
- A5 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE POWER CIRCUIT FOR AN OPEN Install the fuse. Disconnect: Transmission Fluid Heater Coolant Control Valve C1702. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 CBB34 (VT/BN) - Ground Is voltage greater than 10 volts? Yes : GO to A8 . No : REPAIR the circuit. CLEAR the DTC.
- A6 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE POWER CIRCUIT FOR AN OPEN Install the fuse. Disconnect: Transmission Fluid Heater Coolant Control Valve C1702. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 CBK03 (GY) - Ground Is voltage greater than 10 volts? Yes : GO to A8 . No : REPAIR the circuit. CLEAR the DTC.
- A7 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR A SHORT TO GROUND Disconnect: PCM C1551B 1.6L GTDI. Disconnect: PCM C1381B 2.0L GTDI. Disconnect: PCM C175E 2.5L. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-1 CE171 (YE/VT) - Ground Is the resistance greater than 10, 000 ohms? Yes : For 1.6L GTDI engines, GO to A8. For 2.0L GTDI engines, GO to A9 . For 2.5L engines, GO to A10 . No : REPAIR the circuit. CLEAR the DTC.
- A8 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C1551B 1.6L GTDI. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-1 CE171 (YE/VT) C1551B-81 CE171 (YE/VT) Is the resistance less than 5 ohms? Yes : GO to A11 . No : REPAIR the circuit. CLEAR the DTC.
- A9 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C1381B 2.0L GTDI. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-1 CE171 (YE/VT) C1381B-81 CE171 (YE/VT) Is the resistance less than 5 ohms? Yes : GO to A11 . No : REPAIR the circuit. CLEAR the DTC.
- A10 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C175E 2.5L. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-1 CE171 (YE/VT) C175E-18 CE171 (YE/VT) Is the resistance less than 5 ohms? Yes : GO to A11. No : REPAIR the circuit. CLEAR the DTC.
- A11 CHECK THE TRANSMISSION FLUID HEATER COOLANT CONTROL VALVE Measure the component side resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 - C1702-1 - Is the resistance between 15 and 30 ohms? Yes : INSTALL a new PCM. REFER to «AUTOMATIC TRANSAXLE - 6F35»(ref-569558) . PROGRAM the PCM with the latest calibration level. PERFORM the Solenoid Body Strategy Data Download procedure. REFER to Solenoid Body Strategy in «AUTOMATIC TRANSAXLE - 6F35»(ref-569558) . No : INSTALL a new Transmission Fluid Heater Coolant Control Valve. REFER to «ENGINE COOLING»(ref-569571) . CLEAR the DTC.
Pinpoint Test B: P26AC
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 2.5L for additition information.
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 2.0L GTDI for additition information.
Refer to SYSTEM WIRING DIAGRAMS - Electronic Engine Controls 1.6L GTDI for additition information.
Scheme 32
Scheme 33
Scheme 34
Scheme 35
Scheme 36
Scheme 37
- B1 READ AND RECORD ALL DTCs Ignition ON. Connect the scan tool. Using a scan tool, retrieve DTCs. Was DTC P26AC set? Yes : GO to B2. No : The issue may not be the Transmission Fluid Cooler Coolant Control Valve electrical system. GO to «SYMPTOM CHART»(ref-569622-S39265857932013072700000) .
- B2 CHECK BJB FUSE 34 (10A) Ignition OFF. Remove BJB fuse 34 (10A). Check BJB fuse 34 (10A). Is the resistance less than 5 ohms? Yes : For 1.6L GTDI engines, GO to B5 . For 2.0L GTDI and 2.5L engines, GO to B6 . No : For 1.6L GTDI engines, GO to B3. For 2.0L GTDI and 2.5L engines, GO to B4 .
- B3 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE POWER CIRCUIT FOR A SHORT TO GROUND Disconnect: Transmission Fluid Cooler Coolant Control Valve C1703. Inspect for damaged or pushed out terminals. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-2 CBB34 (VT/BN) - Ground Is the resistance greater than 10, 000 ohms? Yes : GO to B7 . No : REPAIR the circuit. CLEAR the DTC.
- B4 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE POWER CIRCUIT FOR A SHORT TO GROUND Disconnect: Transmission Fluid Cooler Coolant Control Valve C1703. Inspect for damaged or pushed out terminals. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-2 CBK03 (GY) - Ground Is the resistance greater than 10, 000 ohms? Yes : GO to B7 . No : REPAIR the circuit. CLEAR the DTC.
- B5 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE POWER CIRCUIT FOR AN OPEN Install the fuse. Disconnect: Transmission Fluid Cooler Coolant Control Valve C1703. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-2 CBB34 (VT/BN) - Ground Is voltage greater than 10 volts? Yes : GO to B8 . No : REPAIR the circuit. CLEAR the DTC.
- B6 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE POWER CIRCUIT FOR AN OPEN Install the fuse. Disconnect: Transmission Fluid Cooler Coolant Control Valve C1703. Ignition ON. Measure the voltage between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-2 CBK03 (GY) - Ground Is voltage greater than 10 volts? Yes : GO to B8 . No : REPAIR the circuit. CLEAR the DTC.
- B7 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR A SHORT TO GROUND Disconnect: PCM C1551B 1.6L GTDI. Disconnect: PCM C1381B 2.0L GTDI. Disconnect: PCM C175E 2.5L. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-1 CE172 (GN) - Ground Is the resistance greater than 10, 000 ohms? Yes : For 1.6L GTDI engines, GO to B8. For 2.0L GTDI engines, GO to B9 . For 2.5L engines, GO to B10 . No : REPAIR the circuit. CLEAR the DTC.
- B8 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C1551B 1.6L GTDI. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-1 CE172 (GN) C1551B-40 CE172 (GN) Is the resistance less than 5 ohms? Yes : GO to B11 . No : REPAIR the circuit. CLEAR the DTC.
- B9 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C1381B 2.0L GTDI. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-1 CE172 (GN) C1381B-40 CE172 (GN) Is the resistance less than 5 ohms? Yes : GO to B11 . No : REPAIR the circuit. CLEAR the DTC.
- B10 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE CONTROL CIRCUIT FOR AN OPEN Disconnect: PCM C175E 2.5L. Measure the resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1703-1 CE172 (GN) C175E-52 CE172 (GN) Is the resistance less than 5 ohms? Yes : GO to B11. No : REPAIR the circuit. CLEAR the DTC.
- B11 CHECK THE TRANSMISSION FLUID COOLER COOLANT CONTROL VALVE Measure the component side resistance between: Positive Lead Negative Lead Pin Circuit Pin Circuit C1702-2 - C1702-1 - Is the resistance between 15 and 30 ohms? Yes : INSTALL a new PCM. REFER to «AUTOMATIC TRANSAXLE - 6F35»(ref-569558) . PROGRAM the PCM with the latest calibration level. PERFORM the «SOLENOID BODY STRATEGY DOWNLOAD»(ref-569558-S13214134722013072700000) procedure. No : INSTALL a new Transmission Fluid Cooler Coolant Control Valve. REFER to «ENGINE COOLING»(ref-569571) . CLEAR the DTC.