Diagnostic Strategy
Troubleshooting an electronically controlled automatic transaxle is simplified by using the proven method of diagnosis. One of the most important things to remember is that there is a definite procedure to follow.
Note. Do not take short cuts or assume that critical checks or adjustments have already been made.
Follow the procedures as written to avoid missing critical components or steps.
To correctly diagnose a concern, have the following publications available
- «INTRODUCTION - GASOLINE MODELS»(ref-355661)
- TSBs
- SYSTEM WIRING DIAGRAMS article
These publications provide the information required when diagnosing transaxle concerns.
Use Diagnostic Flow Table as a guide and follow the steps as indicated.
Preliminary Inspection
- Know and understand the customer's concern.
- Verify the concern by operating the vehicle.
- Check the transmission fluid level and condition.
- Check for non-factory-installed items and verify correct installation.
- Check selector lever linkage for correct adjustment.
- Check TSBs regarding the concern.
- Retrieve and record all DTCs.
Diagnostics
- Retrieve and record all DTCs.
- Repair all non-transaxle codes first.
- Repair all transaxle codes second.
- Erase all continuous codes and attempt to repeat them with the drive cycle test. Refer to «TRANSAXLE DRIVE CYCLE TEST»(ref-355918-S42448699972010013000000) .
- Repair all continuous memory codes.
- If only pass codes are obtained, proceed to «DIAGNOSIS BY SYMPTOM»(ref-355918-S18909871672010013000000) for further information and diagnosis.
Follow the diagnostic sequence to diagnose and repair the concern the first time.
Diagnostic Flow Table
| Test | Result | Action |
|---|---|---|
| Are any DTCs recorded? | Yes | REPAIR all hard DTCs. FOLLOW the pinpoint tests. REFER to INTRODUCTION - GASOLINE MODELS first, then this workshop manual, then GO to "Are any continuous test memory codes present?". |
| No | REFER to DIAGNOSIS BY SYMPTOM , then GO to "Was the transmission concern corrected when the scan tool was installed?". | |
| Are any continuous test memory codes present? | Yes | CLEAR codes and CARRY OUT the drive cycle test. If code returns, GO to "Did the continuous test memory codes reappear?". |
| No | GO to "Is the concern repaired?". | |
| Did the continuous test memory codes reappear? | Yes | REPAIR all continuous test memory codes. FOLLOW the pinpoint tests. REFER to INTRODUCTION - GASOLINE MODELS , then the Transmission Reference manual, then this workshop manual, then GO to "Are any continuous test memory codes present?". |
| No | GO to "Is the concern repaired?". | |
| Is the concern repaired? | Yes | VERIFY that no DTCs are present. CLEAR memory codes. |
| No | REFER to DIAGNOSIS BY SYMPTOM . | |
| Was the transmission concern corrected when the scan tool was installed? | Yes | REFER to INTRODUCTION - GASOLINE MODELS , intermittent fault diagnosis section and use the scan tool to diagnose cause of concern in the processor, vehicle harness or external inputs (sensors or switches). |
| No | REFER to the hydraulic and mechanical routine to diagnose the concern, then GO to "Is the concern repaired?". | |
| Is the concern repaired? | Yes | CARRY OUT the drive cycle test and VERIFY that no DTCs are present. CLEAR memory codes. |
| No | Concern should have been repaired. GO back through the Diagnostic Flow Table and REVIEW other components that may have contributed to the concern. CHECK and DIAGNOSE those components. GET assistance from other sources. |
DIAGNOSTIC FLOW TABLE
Road Testing Vehicle
Note. Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.
The Shift Point Road Test and Torque Converter Operation Tests provide diagnostic information on shift controls and torque converter operation.
Visual Inspection
This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Ford factory add-on devices such as
- Electronic add-on items: A/C Generator (alternator) Engine turbo Cellular telephone Cruise control CB radio Linear amplifiers Backup alarm signal Computer
- Vehicle modification: These items, if not installed correctly, will affect the PCM or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, abnormal tire size or axle ratio changes. Leaks. Refer to «LEAKAGE INSPECTION»(ref-355918-S01063023392010013000000) . Correct selector lever linkage adjustments. Refer to «SELECTOR LEVER CABLE ADJUSTMENT -- AISIN AW21»(ref-355979-S07252807472010013000000) and/or «SELECTOR LEVER CABLE ADJUSTMENT -- 6F35»(ref-355979-S01272897912010013000000) .
Self Diagnosis Function
The Transmission Control Module (TCM) monitors the communication status of each sensor, electronic component and the PCM. If any malfunction should occur, the TCM function warns the driver and stores the malfunction as a diagnosis code.
Fail-Safe
With the fail-safe function, if any malfunction should occur in the transaxle system, the TCM will output a control signal, and control will be carried out to make traveling a minimum distance possible. If all shift solenoids malfunction, the TCM will cancel the output of control signals to the solenoids. If this happens, the automatic transmission gear shifting will be controlled by transmission fluid pressure circuits only and the gears will shift as shown in the following table below.
| Selector Lever Position | Gear Position |
|---|---|
| R | Reverse |
| D | 3rd or 5th gear |
GEAR POSITION TABLE
On-Board Diagnostic (OBD) With Scan Tool
Note. For detailed instruction and other diagnostic methods using the scan tool or equivalent, refer to Scan Tool Tester manual and INTRODUCTION - GASOLINE MODELS .
These Self Tests should be used to diagnose the PCM and should be carried out in order.
- Self Test - Key ON Engine OFF (KOEO)
- Self Test - Continuous Memory Codes
- Self Test - Key ON Engine Running (KOER)
- Special Test Modes Wiggle Test Mode Output Test Mode
- PCM Reset Mode
- Clearing DTCs P1000
- On-Board Diagnostic (OBD) II Drive Cycle
- Other scan tool features
Transaxle Drive Cycle Test
Note. Prior to carrying out TRANSAXLE DRIVE CYCLE TEST , make sure that the transaxle is full of transmission fluid or damage to the transaxle may occur.
Note. Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.
Use TRANSAXLE DRIVE CYCLE TEST for checking continuous codes.
Note. The TRANSAXLE DRIVE CYCLE TEST must be followed exactly. Malfunctions must occur multiple times consecutively for shift error or Torque Converter Clutch (TCC) code to set.
Note. When carrying out TRANSAXLE DRIVE CYCLE TEST , see SOLENOID OPERATION TABLE for correct solenoid operation. Refer to SPECIFICATIONS .
- Record and then erase all DTCs.
- Warm engine to normal operating temperature.
- Make sure transmission fluid level is correct.
- With the selector lever in DRIVE, moderately accelerate from stop to 80 km/h (50 mph). This allows the transaxle to shift into 6th gear. Hold speed and throttle steady for minimum of 15 seconds. Brake to a stop and remain stopped for minimum of 20 seconds.
- Repeat step 4 at least 5 times.
- Retrieve and record any DTCs. If DTCs are present, refer to «DIAGNOSTIC TROUBLE CODE (DTC) TABLES»(ref-355918-S19809663502010013000000) . Service all non-transaxle DTCs first as they can directly affect the operation of the transaxle. Repeat the Road Test to verify the correction. Erase DTCs, carry out «TRANSAXLE DRIVE CYCLE TEST»(ref-355918-S42448699972010013000000) , and road test after completing service on the DTCs. If the continuous test passes (system pass) and a concern is still present, refer to «DIAGNOSIS BY SYMPTOM»(ref-355918-S18909871672010013000000) and check TSBs for diagnostic concern.
After On-Board Diagnostic (OBD)
Note. The vehicle wiring harness, PCM and non-transaxle sensors may affect transaxle operations. Service these concerns first.
After the On-Board Diagnostic (OBD) procedures are completed, service all DTCs.
Begin with non-transaxle related DTCs, then service any transaxle related DTCs. Refer to DIAGNOSTIC TROUBLE CODE (DTC) TABLES for information on Condition and Symptoms. This table will be helpful in referring to the correct manual(s) and to aid in diagnosing internal transaxle concerns and external non-transaxle inputs. The pinpoint tests are used in diagnosing electrical concerns of the transaxle. Make sure that the vehicle wiring harness and the PCM are diagnosed as well. Refer to INTRODUCTION - GASOLINE MODELS for diagnosing non-transaxle electronic components. The diagnostic routine hydraulic/mechanical tables will help in diagnosing internal transaxle concerns and external non-transaxle inputs.
Diagnostic Trouble Code (DTC) Tables
Note. This module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. Continuous Memory Diagnostic Trouble Code (CMDTC) has an additional 2-character DTC status code suffix to assist in determining DTC history.
| DTC | Component | Description | Condition | Symptom | Action |
|---|---|---|---|---|---|
| P0562:00 | Battery | System voltage low. | PCM detected a voltage level below 9 volts. | No engagements, no adaptive or self-learning strategy. | CHECK charging system, REFER to BATTERY, MOUNTING AND CABLES . |
| P0563:00 | Battery | System voltage high. | PCM detected a voltage level above 18 volts. | No adaptive or self-learning strategy. | CHECK charging system, REFER to BATTERY, MOUNTING AND CABLES . |
| P0601:00 | Transmission Control Module (TCM) | TCM Read-Only Memory (ROM) error. | TCM detected an internal software concern with ROM . | No engagements, no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0603:00 | TCM | TCM Keep Alive Memory (KAM) error. | TCM detected an internal software concern with KAM . | No engagements, no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0604:00 | TCM | TCM Random Access Memory (RAM) error. | TCM detected an internal software concern with RAM . | No engagements, no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0706:00 | Transmission Range (TR) | TR sensor range or performance error. | TR sensor signal is out of normal range. | TR sensor indicates a stuck position (D-3rd gear), no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0707:00 | TR Sensor | TR sensor circuit low input. | TR sensor signal is below threshold of 0.127 volt, sensor/circuit electrical malfunction. | TR sensor indicates a stuck position (D-3rd gear), no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0708:00 | TR Sensor | TR sensor circuit high input. | TR sensor signal is above threshold of 4.87 volts, sensor/circuit electrical malfunction. | TR sensor indicates a stuck position (D-3rd gear), no adaptive or self-learning strategy. | INSTALL a new TCM . |
| P0711:00 | Transmission Fluid Temperature (TFT) Sensor | No change in TFT during operation. | PCM has detected no TFT change during operation. TFT value stuck at some normal reading. | TFT indicates 80°C (176°F) at all times, no self-learning strategy, no Torque Converter Clutch (TCC) engagement. | Go To PINPOINT TEST B . |
| P0712:00 | TFT Sensor | 200°C (329°F) indicated, TFT sensor circuit grounded. | Voltage drop across TFT sensor exceeds scale set for temperature -43°C (-45°F). | TFT indicates 80°C (176°F) at all times, no self-learning strategy, no TCC engagement. | Go To PINPOINT TEST B . |
| P0713:00 | TFT | Sensor -43°C (-45°F) indicated, TFT sensor circuit grounded. | Voltage drop across TFT sensor exceeds scale set for temperature -43°C (-45°F). | TFT indicates 80°C (176°F) at all times, no self-learning strategy, no TCC engagement. | Go to PINPOINT TEST B . |
| P0716:00 | Turbine Shaft Speed (TSS) Sensor | TSS range out of performance, insufficient input from TSS . | PCM has detected a loss or noisy TSS signal during operation. | No TCC engagements, no adaptive or self-learning strategy. | Go to PINPOINT TEST D . |
| P0717:00 | TSS Sensor | No TSS signal. | PCM has not detected a TSS signal. No TSS signal when Output Shaft Speed (OSS) signal present. | No TCC engagements, no adaptive or self-learning strategy. | Go to PINPOINT TEST D . |
| P0721:00 | OSS Sensor | OSS range out of performance, insufficient input from OSS . | PCM has detected a loss or noisy OSS signal during operation. | No adaptive or self-learning strategy. | Go to PINPOINT TEST C . |
| P0722:00 | OSS Sensor | No OSS signal. | PCM has detected no OSS signal. | No engagements, no adaptive or self-learning strategy. | Go to PINPOINT TEST C . |
| P0729:00 | Transaxle | 6th gear ratio. | No 6th gear ratio detected by TCM . | No 6th gear, no TCC engagements, no adaptive or self-learning strategy. | Go to PINPOINT TEST A . |
| P0730:00 | Clutch Control Solenoids or Internal Parts | Gear ratio error. | PCM has detected a gear ratio error. | No self-learning strategy. | Go to PINPOINT TEST A . |
| P0731:00 | Solenoid or Internal Parts | 1st gear ratio. | No 1st gear ratio detected by TCM . | No 1st gear, no TCC engagements, no adaptive or self-learning strategy. | Go to PINPOINT TEST A . |
| P0732:00 | Solenoid or Internal Parts | 2nd gear ratio. | No 2nd gear ratio detected by TCM . | No 2nd gear, no TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0733:00 | Solenoid or Internal Parts | 3rd gear ratio. | No 3rd gear ratio detected by TCM . | No 3rd gear, no TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0734:00 | Solenoid or Internal Parts | 4th gear ratio. | No 4th gear ratio detected by TCM . | No 4th gear, no TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0735:00 | Solenoid or Internal Parts | 5th gear ratio. | No 5th gear ratio detected by TCM . | No 5th gear, no TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0736:00 | Transaxle | Reverse gear ratio. | No reverse gear ratio detected by TCM . | No reverse gear, no self-learning strategy. | Go To PINPOINT TEST A . |
| P0780:00 | Solenoid or Valve Internal to Transaxle | Universal shifting (stuck valve). | Valve stuck. | Increase rpm during shifts. Slipping or erratic shifting. | GO to MAIN CONTROL VALVE BODY . |
| P0813:00 | Reverse Lamp Module | Reverse lamp short circuit. | Reverse lamp short to battery. | Reverse lamps inoperative. | GO to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - AISIN AW21/6F35 . |
| P0813:00 | Reverse Lamp Module | Reverse lamp open circuit. | Reverse lamp short to ground. | Reverse lamps always illuminated. | GO to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - AISIN AW21/6F35 . |
| P0817:00 | TCM /PCM Starter Circuit | Starter disable circuit open or shorted to power/ground. | TCM detected a failure in the starter lock circuit, failed ON or OFF. Ignition switch is ON, TCM and PCM communication is normal. No voltage is detected on the start lock circuit for more than 0.1 second or a continuous 12-volt output is detected for more than 0.1 second. Conditions present 2 times to set DTC. | DTC is set. Warning lamp is illuminated. | Go To PINPOINT TEST E . |
| P0819:00 | Select Shift Transmission Control Circuit | Select shift switch output circuit failure. | The associated circuitry connected to the select shift switch or fuse, or the select shift switch itself may have an issue causing a select shift malfunction. | No manual up or down shift available. | GO to AUTOMATIC TRANSAXLE/TRANSMISSION EXTERNAL CONTROLS - AISIN AW21/6F35 . |
| P0961:00 | Pressure Control Solenoid A (PCA) | PCA circuit or solenoid failure. | PCA circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0962:00 | PCA | PCA solenoid signal or grounded circuits either short or open, solenoid circuit failure. | Voltage through PCA is checked. An error will be noted if tolerance is exceeded. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0963:00 | PCA | PCA solenoid short to power circuit failure. | Voltage through PCA is checked. An error will be noted if tolerance is exceeded. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0973:00 | Shift Solenoid A (SSA) | SSA solenoid or circuit shorted to ground. | Voltage through SSA (S1) circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0974:00 | SSA | SSA or circuit shorted to power or open. | Voltage through SSA (S1) circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0976:00 | Shift Solenoid B (SSB) | SSB solenoid or circuit shorted to ground. | Voltage through SSB (S2) circuit is checked. An error will be noted if tolerance is exceeded. Short to ground failure detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0977:00 | SSB | SSB solenoid or circuit shorted to power or open. | Voltage through SSB solenoid (S2) circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0978:00 | Shift Solenoid C (SSC) | SSC circuit or solenoid failure. | SSC circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0979:00 | SSC | SSC solenoid signal or grounded circuits either shorted or open, solenoid circuit failure. | Voltage through SSC circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0980:00 | SSC | SSC solenoid or circuit shorted to power. | Voltage through SSC circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0981:00 | Shift Solenoid D (SSD) | SSD circuit or solenoid failure. | SSD circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0982:00 | SSD | SSD signal or grounded circuits either shorted or open, solenoid circuit failure. | Voltage through SSD circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0983:00 | SSD | SSD or circuit shorted to power. | Voltage through SSD circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0984:00 | Shift Solenoid E (SSE) | SSE circuit or solenoid failure. | SSE circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0985:00 | SSE | SSE signal or grounded circuits either shorted or open, solenoid circuit failure. | Voltage through SSE circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0986:00 | SSE | SSE or circuit shorted to power. | Voltage through SSE circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0997:00 | Shift Solenoid F (SSF) | SSF circuit or solenoid failure. | SSF circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0998:00 | SSF | SSF signal or grounded circuits either shorted or open, solenoid circuit failure. | Voltage through SSF circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P0999:00 | SSF | SSF or circuit shorted to power. | Voltage through SSF circuit is checked. An error will be noted if tolerance is exceeded. Short to power failure or open circuit detected. | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P1573:00 | Accelerator Pedal Position (APP) Sensor | APP sensor input error. | PCM has detected an input error from the APP sensor. | No adaptive or self-learning strategy. | NOTE: If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . REFER to INTRODUCTION - GASOLINE MODELS . |
| P1576:00 | Throttle Position (TP) Sensor | TP sensor input error. | TP not available. | Limited function. | NOTE: If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . REFER to INTRODUCTION - GASOLINE MODELS . |
| P1657:00 | TCM | TCM communication link error. | Controller Area Network (CAN) link error detected by PCM. | No engagements, no adaptive or self-learning strategy. Limited fuel and spark. | INSTALL a new TCM . |
| P1700:00 | Transaxle | Drive engagement error. | TCM detected neutral in the DRIVE position. | No engagements, no adaptive or self-learning strategy. | REFER to DIAGNOSIS BY SYMPTOM . |
| P1701:00 | Transaxle | Reverse engagement error. | TCM detected neutral in the REVERSE position. | No self-learning strategy. | REFER to DIAGNOSIS BY SYMPTOM . |
| P1719:00 | PCM | Engine torque signal. | Torque engine accuracy from PCM inaccurate. | Firm shifts and no adaptive learning. | PERFORM self-test of PCM. REFER to INTRODUCTION - GASOLINE MODELS to diagnose any DTCs present. If no DTCs, IDENTIFY the driveability symptom present and REFER to INTRODUCTION - GASOLINE MODELS for further diagnosis. |
| P1919:00 | Engine Coolant Temperature (ECT) | Sensor signal error. | PCM/ TCM have detected an error in the CAN ECT information. | No TCC engagements, ECT set to 80°C (176°F). | NOTE: If this DTC is displayed, a malfunction occurred in the vehicle not, the TCM . Do not install a new TCM . REFER to INTRODUCTION - GASOLINE MODELS . |
| P2757:00 | TCC Solenoid | TCC solenoid circuit failure, stuck OFF. | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open, shorted or PCM driver failure during On-Board Diagnostic (OBD). | No TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P2758:00 | TCC Solenoid | TCC solenoid circuit failure, stuck ON. | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit open, shorted or PCM driver failure during OBD . | No TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P2762:00 | TCC Solenoid | TCC circuit or solenoid failure. | TCC circuit or solenoid failed during operation. Incorrect commanded current detected by TCM . | No engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P2763:00 | TCC Solenoid | TCC circuit shorted to power. | TCC solenoid circuit fails to provide voltage drop across solenoid. Circuit shorted to power. | No TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| P2764:00 | TCC Solenoid | TCC solenoid signal or grounded circuits either short or open solenoid circuit failure. | TCC solenoid circuit fails to provide voltage drop across solenoid. | No TCC engagements, no adaptive or self-learning strategy. | Go To PINPOINT TEST A . |
| U0073:00 | TCM CAN | TCM communication link error. | CAN link error detected by PCM. | No engagements, no adaptive or self-learning strategy. | REFER to MODULE COMMUNICATIONS NETWORK . |
| U0100:00 | TCM CAN | TCM communication link error. | CAN link error detected by PCM. | No engagements, no adaptive or self-learning strategy. | NOTE: If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . A module cannot communicate with other modules on the communication network while being reprogrammed. CLEAR any network communication DTCs which may have been set in other modules during reprogramming.CHECK CAN harness between TCM and other modules. For diagnostic information, REFER to INTRODUCTION - GASOLINE MODELS and REFER to MODULE COMMUNICATIONS NETWORK . |
| NOTE |
|---|
| If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . |
| NOTE |
|---|
| If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . |
| NOTE |
|---|
| If this DTC is displayed, a malfunction occurred in the vehicle not, the TCM . Do not install a new TCM . |
| NOTE |
|---|
| If this DTC is displayed, a malfunction occurred in the vehicle not the TCM . Do not install a new TCM . |
DIAGNOSTIC TROUBLE CODE (DTC) TABLE
Scheme 5
| Pin Number | Circuit Function |
|---|---|
| 1 | Pressure Control Solenoid A (PCA) ground |
| 2 | Shift Solenoid B (SSB) |
| 3 | PCA signal |
| 4 | Torque Converter Clutch (TCC) ground |
| 5 | Shift Solenoid A (SSA) |
| 6 | NOT USED |
| 7 | Transmission Fluid Temperature (TFT) ground |
| 8 | TFT |
| 9 | TCC signal |
| 10 | Shift Solenoid C (SSC) ground |
| 11 | SSC signal |
| 12 | Turbine Shaft Speed (TSS) sensor signal |
| 13 | TSS sensor signal ground |
| 14 | Shift Solenoid E (SSE) signal |
| 15 | NOT USED |
| 16 | Shift Solenoid F (SSF) ground |
| 17 | Shift Solenoid D (SSD) signal |
| 18 | SSD ground |
| 19 | Output Shaft Speed (OSS) sensor signal |
| 20 | OSS sensor signal ground |
| 21 | SSF signal |
| 22 | SSE ground |
FUNCTION TABLE
Scheme 6
| Pin Number | Circuit Function |
|---|---|
| 1 | Battery feed |
| 2 | NOT USED |
| 3 | Manual upshift command |
| 4 | Manual downshift command |
| 5 | Start lock signal out |
| 6 | Controller Area Network (CAN) |
| 7 | NOT USED |
| 8 | NOT USED |
| 9 | Transmission Control Module (TCM) ground |
| 10 | NOT USED |
| 11 | Ignition switch signal input |
| 12 | NOT USED |
| 13 | Reverse lamp signal out |
| 14 | CAN + |
| 15 | NOT USED |
| 16 | NOT USED |
FUNCTION TABLE
Scheme 7
Note. For testing, place the positive lead on the terminal with the + sign and place the negative lead on the terminal with the - sign.
| Pin Number | Pin Acronym | Description | Input/Output to Trans- mission Control Module (TCM) | Measure pins | Condition For Testing | Reference Value |
|---|---|---|---|---|---|---|
| A1 | B+ | Battery voltage | +A1 to ground | Hot at all times | 10-14 volts | |
| A3 | SST(+) | Select shift upshift signal | Input | +A3 to -A9 | Voltage high when upshift commanded by select shift | 10-14 volts |
| A4 | SST(-) | Select shift downshift signal | Input | +A4 to -A9 | Voltage high when downshift commanded by select shift | 10-14 volts |
| A5 | STLK | Start lock signal output | Output | +A5 to -A9 | Ignition ON in PARK Ignition ON in other than PARK | 0-0.8 volt 9-14 volts |
| A6 | CAN L | Controller Area Network (CAN) communication low | Input/output | +A6 to -A9 | Engine idling | |
| A8 | K | Diagnostic signal | Input/output | +A8 to -A9 | ||
| A9 | GRND | Transmission Control Module (TCM) ground | +ground to chassis ground | |||
| A11 | IG | Ignition switch signal input | Input | +A11 to -A9 | Ignition ON | 10-14 volts |
| A12 | Reverse Lamp | Reverse lamp is indicated in reverse | Output | +A12 to -A9 | Voltage high when not in REVERSE Voltage low when in REVERSE | 0-14 volts |
| A14 | CAN H | CAN communication high | Input/output | +A14 to -A9 | Engine idling | |
| B1 | PCA ground | Pressure Control Solenoid A (PCA) ground (SLTG) | ||||
| B2 | SSB | Shift Solenoid B (SSB) (S2) | Output | +B2 to ground | Vehicle in PARK, engine idling | 0-1.5 volts |
| B3 | PCA | PCA | Output | +B3 to -B1 | Vehicle in PARK, engine idling | |
| B4 | TCC solenoid ground | Torque Converter Clutch (TCC) solenoid ground (SLUG) | ||||
| B5 | SSA | Shift Solenoid A (SSA) (S1) | Output | +B5 to ground | Vehicle in PARK, engine idling | 0-1.5 volts |
| B7 | TFT ground | Transmission Fluid Temperature (TFT) sensor ground (OTG) | ||||
| B8 | TFT | TFT sensor (OT) | Input | +B8 to -B7 | TFT at 10°C to 110°C (50°F to 230°F) | 4.0 to 0.0 volts |
| B9 | TCC | TCC solenoid (SLU) | Output | +B9 to -B4 | Vehicle in PARK, engine idling | |
| B10 | SSC ground | Shift Solenoid C (SSC) ground (SLC1G) | ||||
| B11 | SSC | SSC (SLC1) | Output | +B11 to -B10 | Vehicle in PARK, engine idling | |
| B12 | ISS | Input shaft speed sensor signal (NIN) | Input | +B12 to -B13 | Vehicle in PARK, engine idling | |
| B13 | ISS ground | Input shaft speed sensor signal (NIN) | ||||
| B14 | SSE | Shift Solenoid E (SSE) | Output | +B14 to -B22 | Vehicle in PARK, engine idling | |
| B16 | SSF ground | Shift Solenoid F (SSF) ground (SLB1G) | ||||
| B17 | SSD | Shift Solenoid D (SSD) (SLC2) | Output | +B17 to -B18 | Vehicle in PARK, engine idling | |
| B18 | SSD ground | SSD ground (SLC2G) | ||||
| B19 | OSS | Output Shaft Speed (OSS) sensor signal (SP+) | Input | +B19 to -B20 | Vehicle speed approximately 20 km/h (12 mph) | |
| B20 | OSS ground | OSS sensor ground (SP-) | ||||
| B21 | SSF | SSF (SLB1G) | Output | +B21 to -B16 | Vehicle in PARK, engine idling | |
| B22 | SSE ground | SSE ground (SLC3G) |
PIN NUMBER TESTING CONDITION REFERENCE VALUE TABLE
PINPOINT TEST A: SHIFT SOLENOIDS
Note. Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS procedure.
Scheme 8
Scheme 9
Scheme 10
Scheme 11
Scheme 12
Scheme 13
Scheme 14
Scheme 15
Scheme 16
- A1 ELECTRONIC DIAGNOSTICS Check to make sure the transaxle harness connector is fully seated, pins are fully engaged in the connector and in good condition before proceeding. Ignition OFF. Connect the scan tool. Ignition ON. Enter the following diagnostic mode on the scan tool: Retrieve DTCs. Are there any transmission DTC faults present? Yes: For Shift Solenoid A (SSA) and Shift Solenoid B (SSB), GO to A2 . For the Pressure Control Solenoid A (PCA), Shift Solenoid C (SSC), Shift Solenoid D (SSD), Shift Solenoid E (SSE), Shift Solenoid F (SSF) and Torque Converter Clutch (TCC), GO to A4 . No: CLEAR all DTCs. ROAD TEST to verify if concern is still present. Concern could be intermittent. If concern is still present or reappears, GO to the appropriate pinpoint test steps: For shift solenoids SSA and SSB , GO to A2 . For shift solenoids PCA , SSC , SSD , SSE , SSF and TCC , GO to A4 .
- A2 CHECK RESISTANCE OF THE ON/OFF SOLENOID CIRCUIT Ignition OFF. Remove the Transmission Control Module (TCM). Measure the resistance at the transaxle bulkhead electrical connector between pin 2 and ground for SSB . Measure the resistance at the transaxle bulkhead electrical connector between pin 5 and ground for SSA . Is the resistance between 11-15 ohms? Yes: INSTALL a new Transmission Control Module (TCM) and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to A3 . No: GO to A3 .
- A3 CHECK RESISTANCE OF THE ON/OFF SOLENOIDS Remove the transaxle side cover. Remove the wiring connector from the affected solenoid ( SSA or SSB ). Measure the resistance between solenoid pin 1 and ground of the affected solenoid. Is the solenoid resistance between 11-15 ohms? Yes: INSTALL a new internal wire harness or REPAIR affected circuit. No: INSTALL a new main control.
- A4 CHECK LINEAR SOLENOID SHORT TO GROUND Ignition OFF. Remove the TCM . Measure the resistance between the transaxle bulkhead electrical connector pin and ground using the following table below: TRANSAXLE BULKHEAD ELECTRICAL CONNECTOR REFERENCE TABLE Pin Number Circuit Function 1 Pressure Control Solenoid A (PCA) ground 3 PCA signal 4 Torque Converter Clutch (TCC) ground 9 TCC signal 10 Shift Solenoid C (SSC) ground 11 SSC signal 14 Shift Solenoid E (SSE) signal 16 Shift Solenoid F (SSF) ground 17 Shift Solenoid D (SSD) signal 18 SSD ground 21 SSF signal 22 SSE ground Is each resistance greater than 10,000 ohms? Yes: GO to A5 . No: GO to A6 .
- A5 CHECK RESISTANCE OF THE LINEAR SOLENOID(S) Inspect both sides of the TCM for damaged or pushed-out pins, corrosion or damaged seals. For the TCC solenoid, measure the resistance between pin 4 and pin 9 at the transaxle. For the PCA solenoid, measure the resistance between pin 3 and pin 1 at the transaxle. For the SSF solenoid, measure the resistance between pin 21 and pin 16 at the transaxle. For the SSC solenoid, measure the resistance between pin 11 and pin 10 at the transaxle. For the SSD solenoid, measure the resistance between pin 17 and pin 18 at the transaxle. For the SSE solenoid, measure the resistance between pin 14 and pin 22 at the transaxle. Is the resistance between 5.0 - 5.6 ohms? Yes: INSTALL a new TCM and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to A6 . No: GO to A6 .
- A6 CHECK CONTINUITY OF THE INTERNAL HARNESS Remove the transaxle side cover. Remove the wiring connector from the affected solenoid(s) ( PCA , SSC , SSD , SSE , SSF and TCC ). Measure the resistance between the bulkhead connector and the affected solenoid electrical connector. Is the resistance less than 5 ohms? Yes: INSTALL a new main control. No: INSTALL a new internal wire harness or repair affected circuit.
PINPOINT TEST B: TFT SENSOR
Note. Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS procedure.
Scheme 17
Scheme 18
Scheme 19
- B1 ELECTRONIC DIAGNOSTICS Connect the scan tool. Check to make sure the transaxle harness connector is fully seated, pins are fully engaged in connector and in good condition before proceeding. Ignition ON. Select DataLogger. Select PID/TFT. Does the vehicle enter DataLogger? Yes: GO to B2 . No: REPEAT procedure to enter DataLogger. If vehicle did not enter DataLogger, REFER to «INTRODUCTION - GASOLINE MODELS»(ref-355661) .
- B2 TEMPERATURE SIGNAL CHECK Ignition ON. Select DataLogger. Select TFT PID. Monitor the TFT PID. The temperature value should be within -55°C to 175°C (-67°F to 347°F). Is the Transmission Fluid Temperature (TFT) within specified range? Yes: GO to B3 . No: GO to B4 .
- B3 WARM-UP/COOL-DOWN CYCLE While monitoring the TFT PIDs, carry out the following test: If transmission is cold, run transmission to warm it up. If transmission is warm, allow transmission to cool down. Do the TFT PIDs increase as the transmission is warmed up, decrease as the transmission is cooled and does the TFT stay within the specified range? Yes: INSTALL a new Transmission Control Module (TCM) and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to B4 . No: GO to B4 .
- B4 SIGNAL RESISTANCE Remove the TCM . Inspect both sides of the TCM for damaged or pushed-out pins, corrosion or damaged seals. Measure the resistance between pins 7 and 8 at the transaxle bulkhead electrical connector. Refer to the following table below. Resistance TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR RESISTANCE REFERENCE TABLE °C °F Resistance (Ohms) 10 50 6.445 25 77 3.5 110 230 0.247 Record the resistance. Is the resistance within range? Yes: GO to B5 . No: INSTALL a new internal harness and TFT assembly.
- B5 SHORT TO GROUND Measure the resistance between pin 7 and ground at the transaxle bulkhead electrical connector. Measure the resistance between pin 8 and ground at the transaxle bulkhead electrical connector. Record the resistances. Are the resistances greater than 10,000 ohms? Yes: INSTALL a new TCM and REFLASH to the latest level calibration. No: INSTALL a new internal harness and TFT assembly.
PINPOINT TEST C: OSS SENSORS
Note. Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS procedure.
Scheme 20
Scheme 21
Scheme 22
Scheme 23
- C1 ELECTRONIC DIAGNOSTICS Check to make sure the Transmission Control Module (TCM) connector is fully seated, pins are fully engaged in the connector and in good condition before proceeding. Connect the scan tool. Ignition ON. Monitor the PID for the Output Shaft Speed (OSS) sensor. Monitor and record speed. Does the OSS match the vehicle speed? Yes : CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to C2 . No: GO to C2 .
- C2 CHECK OSS SENSOR RESISTANCE Remove the TCM . Measure the resistance at the transaxle bulkhead electrical connector between pin 19 and 20. Is the resistance less than 5 ohms? Yes: CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to C3 . No: GO to C4 .
- C3 CHECK OSS SENSOR FOR SHORT TO GROUND Remove the TCM . Measure the resistance at the transaxle bulkhead electrical connector between pin 19 and ground. Measure the resistance at the transaxle bulkhead electrical connector between pin 20 and ground. Is the resistance greater than 10,000 ohms? Yes: INSTALL a new TCM and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to C4 . No: GO to C4 .
- C4 CHECK OSS SENSOR RESISTANCE Remove the transaxle side cover. Measure the resistance at the speed sensor electrical connector between pin 1 and 2. Is the resistance less than 5 ohms? Yes: INSTALL a new internal harness. No: INSTALL a new transaxle assembly.
PINPOINT TEST D: TSS SENSOR
Note. Refer to the Transaxle Vehicle Harness Connector illustrations within the TRANSAXLE CONNECTOR LAYOUTS procedure.
Scheme 24
Scheme 25
Scheme 26
- D1 ELECTRONIC DIAGNOSTICS Check to make sure the Transmission Control Module (TCM) connector is fully seated, pins are fully engaged in connector and in good condition before proceeding. Connect the scan tool. Ignition ON. Monitor the PID for the Turbine Shaft Speed (TSS) sensor. Monitor and record speed. Does the TSS match the engine rpm? Yes: CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D2 . No: GO to D2 .
- D2 CHECK TSS SENSOR RESISTANCE Remove the TCM . Measure the resistance at the transaxle bulkhead electrical connector between pin 12 and 13. Is the resistance less than 5 ohms? Yes: CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D3 . No: GO to D4 .
- D3 CHECK TSS SENSOR CIRCUIT FOR SHORT TO GROUND Remove the TCM . Measure the resistance at the transaxle bulkhead electrical connector between pin 12 and ground. Measure the resistance at the transaxle bulkhead electrical connector between pin 13 and ground. Is the resistance greater than 10,000 ohms? Yes: INSTALL a new TCM and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D4 . No: GO to D4 .
- D4 ELECTRONIC DIAGNOSTICS Remove the transaxle side cover. Measure the resistance at the TSS sensor electrical connector between pin 1 and 2. Is the resistance less than 5 ohms? Yes: CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, INSTALL a new internal harness. No: The sensor is defective, INSTALL a new TSS sensor.
PINPOINT TEST E: PARK NEUTRAL SIGNAL
Note. Refer to the Transaxle Vehicle Harness Connector illustrations within TRANSAXLE CONNECTOR LAYOUTS procedure.
Scheme 27
Scheme 28
Scheme 29
- E1 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG) Disconnect: PCM C175B. Selector lever in PARK or NEUTRAL. Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground. Is the resistance between 13 to 40 ohms? Yes: GO to E2 . No: GO to E3 .
- E2 CHECK RESISTANCE ON CIRCUIT CET40 (GN/OG) Selector lever in REVERSE, DRIVE or M. Measure the resistance between C175B-16, circuit CET40 (GN/OG) and chassis ground. Is the resistance greater than 1000 ohms? Yes: INSTALL a new TCM . After installing the new TCM , VERIFY that the starting system is operating correctly. If not, REFER to «ENGINE COOLING»(ref-355972-S28669269912010013000000) to check starting system. No: GO to E3 .
- E3 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR AN OPEN Disconnect: Transmission Control Module (TCM) C1533. Measure the resistance between C1533-5, circuit CET40 (GN/OG) and C175B-16. Is the resistance less than 5 ohms? Yes: GO to E4 . No: REPAIR circuit CET40 (GN/OG) for an open.
- E4 CHECK VEHICLE HARNESS CIRCUIT CET40 (GN/OG) FOR A SHORT TO GROUND Measure the resistance between C1533-5, circuit CET40 (GN/OG) and chassis ground. Is the resistance greater than 10,000 ohms? Yes: INSTALL a new PCM. After installing the new PCM, VERIFY that the starting system is operating correctly. If not, REFER to «ENGINE COOLING»(ref-355972-S28669269912010013000000) to check starting system. No: REPAIR circuit CET40 (GN/OG) for a short to ground.
Stall Speed Test
| WARNING | Block all wheels, set the parking brake and firmly apply the service brake to reduce the risk of vehicle movement during this procedure. Failure to follow these instructions may result in serious personal injury. |
The Stall Speed Test checks
- Torque Converter Clutch (TCC) operation and installation.
- holding ability of the forward clutch.
- reverse clutch (the low-reverse bands).
- planetary One-Way Clutch (OWC).
- engine driveability concerns.
Conduct this test with the engine coolant and transmission fluid at correct levels and at normal operating temperature.
Apply the parking brake firmly for each Stall Speed Test.
Pinpoint Test E
E7
TCC
- NOTE: The stall speed in REVERSE will be lower.
| Test Results | Possible Source |
|---|---|
| Values of both DRIVE and REVERSE ranges are lower than the standards | . Insufficient engine power Torque converter stator One-Way Clutch (OWC) slipping |
| Only the value of DRIVE range is higher than the standards | . Low line pressure. Shift control solenoid assembly failure, primary regulator valve failure Valve body failure (hydraulic pressure system) C1 clutch slipping OWC F1 failure |
| Only the value of REVERSE range is higher than the standards | . Low line pressure. Shift control solenoid assembly failure, primary regulator valve failure Valve body failure (hydraulic pressure system) C3 clutch failure B2 brake failure |
| Values of both DRIVE and REVERSE ranges are higher than the standards | . Low line pressure. Shift control solenoid assembly failure, primary regulator valve failure Primary regulator valve failure Oil pump failure Oil strainer clogging |
PRESSURE DIAGNOSTIC TABLE
Leak Check Test With UV Lamp
Dye-Lite® ATF Steering Fluid Leak Detection Dye 164-R3701 or equivalent (specifically formulated for ATF ) is used to detect a transmission fluid leak.
- Add dye to the transmission fluid. Use 30.0 ml (1 oz) of dye solution for every 3.8L (4 qt) of transmission fluid.
- Start and run the engine until the transaxle reaches its normal operating temperature. Using the 100W/12 Volt UV Lamp, observe the back of the cylinder block and top of the torque converter housing for evidence of fluid leakage. Raise the vehicle on a hoist and run the engine at fast idle, then at engine idle, occasionally shifting to the DRIVE and REVERSE ranges to increase pressure within the transaxle. Observe the front of the flexplate, back of the cylinder block (in as far as possible), and inside the torque converter housing and front of the case. Continue running the engine until fluid leakage is evident and the probable source of leakage can be determined.
Diagnosis by Symptom Table Directions
- Using «DIAGNOSIS BY SYMPTOM INDEX»(ref-355918-S18772463732010013000000) , select the concern/symptom that best describes the condition.
- See the routine indicated in «DIAGNOSIS BY SYMPTOM INDEX»(ref-355918-S18772463732010013000000) .
- Always begin diagnosis of a symptom with: Preliminary inspections. Verifications of condition. Checking the fluid levels. Carry out other test procedures as directed.
- Begin with the routine indicated. Follow the reference or action required statements. Always carry out the On-Board Diagnostic (OBD) tests as required. Never skip steps. Repair as required. These components are listed in the removal sequence and by the most probable cause. All components listed must be inspected to make sure of correct repair. NOTE: Not all concerns and conditions with electrical components will set a DTC. Be aware that the components listed may still be the cause. Verify correct function of these components prior to proceeding to the routine listed.
Diagnosis by Symptom Index
| Title | Routines |
|---|---|
| Engagement Concerns | |
| No forward and/or No reverse | 207 |
| Harsh Soft | 208 209 |
| Torque Converter Clutch Operation Concerns | |
| Does not apply Cycling/shudder/chatters | 240 242 |
| NVH Noise/vibration - forward or reverse | 254 |
| Other Concerns | |
| Transmission fluid level | 286 |
| Transmission fluid condition Transmission control module software | 287 288 |
DIAGNOSIS BY SYMPTOM INDEX TABLE