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mondeo automatic 4 speed CD4E (Read 4822 times)
ring gear
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mondeo automatic 4 speed CD4E
01.03.10 at 22:54:55
 
Had a 2004 automatic petrol mondeo come into me for  no drive, no fault codes after a few checks put it down to a machanical fault in the box, fitted a new box which came with a new torque convertor and selector modules, its now driving in first and second, and when in (D) drive will go in first and then just rev out instead of changing up a gear is there any programming or bleeds to do? have a fault code for gear command error. description says suspect mechanical fault with box but seems like a programming error to me any help would be much appreciated Smiley
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Re: mondeo automatic 4 speed CD4E
Reply #1 - 02.03.10 at 10:39:35
 
do they get control command from vss ,thought it would have flagged though, maybe control unit or wireing
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ring gear
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Re: mondeo automatic 4 speed CD4E
Reply #2 - 02.03.10 at 21:01:23
 
i think so but it seems like it gets the command to change gear and attempts to get the gear but just wont do it, found the tyre size input in the module incorrectly entered the final drive ratio was correct, changed the option for the tyre size to the correct one and upgraded pcm. no difference, found an electrical connector that was supposed sealed into the box a little loose and possibly therfore not making a good/proper connection sealed that up so hopefully that will set over night. a quick drive in the morning and then onto ford i think if there,s no difference Undecided
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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #3 - 02.03.10 at 21:38:58
 
ring gear wrote on 02.03.10 at 21:01:23:
i think so but it seems like it gets the command to change gear and attempts to get the gear but just wont do it, found the tyre size input in the module incorrectly entered the final drive ratio was correct, changed the option for the tyre size to the correct one and upgraded pcm. no difference, found an electrical connector that was supposed sealed into the box a little loose and possibly therfore not making a good/proper connection sealed that up so hopefully that will set over night. a quick drive in the morning and then onto ford i think if there,s no difference Undecided



if you hang about i may have an answer for you.

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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #4 - 03.03.10 at 23:27:32
 
The gearshift timing, gearshift pressure (line pressure) and the solenoid valves of the torque converter lock-up clutch (TCC solenoid valve) in the CD4E transmission are controlled electronically by the powertrain control module (PCM) with its network of inputs and outputs. The transaxle control is separate from the engine control strategy in the PCM, although some of the input signals are shared. Some inputs come from sensors (mass air flow meter, coolant temperature sensor etc.) and inform the PCM about the load status and the operating conditions of the engine. Other inputs are based on driver inputs, such as accelerator pedal position which is relayed to the PCM by the throttle position (TP) sensor. Other inputs again come from the transmission itself, from sensors like the transmission range sensor (TR) (controlled by the position of the gear lever) and the transmission fluid temperature sensor (TFT)

Using all these input signals, the PCM can determine when the time and conditions are right for a shift or converter clutch application. The PCM can also determine the line pressure needed to optimize shift feel. In order to carry out these functions, the PCM controls five electronic solenoid valves - two ON/OFF solenoid valves for switching, one pulse-width modulated (PWM) solenoid valve for controlling the lock-up clutch, one electronic pressure control (EPC) solenoid valve for regulating the line pressure and a 3-2 shift timing/coast clutch solenoid valve for controlling the disengagement of the coast clutch and the co-ordinated disengagement of the direct clutch and the actuation of the low-intermediate brake band during a 3-2 shift.

Powertrain Control Module (PCM) - Inputs

Transmission fluid temperature (TFT) sensor
Transmission range (TR) sensor
Brake on/off (BOO) switch
Electronic ignition (EI) system
-Crankshaft position (CKP) sensor
-Ignition control module
Mass air flow (MAF) sensor
Throttle position (TP) sensor
Transmission control switch (TCS)
Air conditioning (A/C) Clutch
Engine coolant temperature (ECT) sensor
Turbine shaft speed (TSS) sensor
Powertrain Control Module (PCM) - Outputs

Transaxle solenoid body assembly
-Shift solenoid 1 (SS1)
-Shift solenoid 2 (SS2)
-Solenoid valve, electronic pressure control (EPC solenoid)
-Solenoid valve, torque converter lock-up clutch (TCC solenoid)
-3-2 Timing/coast clutch solenoid (3-2T/CCS)
Transmission control indicator lamp (TCIL).
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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #5 - 03.03.10 at 23:31:12
 
Powertrain Control Module (PCM)

The operation of the transmission is controlled by the PCM. Input sensors send information to the PCM. The PCM then controls the solenoid valves that influence the operation of the transmission.

DTCs:P0300 through P0308, P0320, P0340, and P1351 through P1364

Air conditioning (A/C) clutch

The A/C switch is located on the suction accumulator/drier of a factory-installed air conditioning system. When the air conditioning clutch cycling switch contacts close, the PCM receives a signal voltage from the A/C switch indicating that the A/C compressor clutch is engaged. The PCM uses the A/C clutch cycling switch signal to adjust line pressure to compensate for the additional engine load.

Symptoms: With a faulty (closed) air conditioning compressor clutch switch, the line pressure with the air conditioning switched off is slightly low. If there is a malfunction in the opening of the air conditioning compressor clutch switch, the line pressure with the air conditioning switched on is slightly high.

DTC: P1460

Brake, on/off (BOO) switch

The BOO switch signals the PCM when the brakes are applied. The BOO switch is closed when the brakes are depressed and open when they are released. The BOO switch will also disengage the torque converter clutch (TCC) when the brake is applied.

Symptoms: Failed ON - TCC will not engage at less then 1/3 throttle.

Failed OFF or not connected - TCC will not disengage when brake is applied.

DTC: P0703, P1703

Engine Coolant Temperature (ECT) Sensor

The ECT sensor detects the engine coolant temperature and sends this information to the PCM. The PCM uses the ECT sensor to control the operation of the torque converter lock-up clutch (TCC).

Symptoms: TCC will always be OFF if ECT sensor reads colder than normal, resulting in reduced fuel economy.

DTCs: P0116, P0117 and P0118

Electronic Ignition (EI) System

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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #6 - 03.03.10 at 23:33:57
 
The electronic ignition system consists of the PCM, a crankshaft position (CKP) sensor and one multi-tower ignition coil. The CKP sensor sends a crankshaft position signal to the PCM. The PCM then sends the appropriate ignition signal to the ignition coil. The PCM uses this signal in the transaxle shift strategy, as well as torque converter clutch (TCC) control and electronic pressure control. Wide open throttle (WOT) shift control is also affected by the EI system input.

Symptoms: Harsh engagements and shifts, late WOT shifts, and no TCC engagement.

DTCs: P0300 through P0308, P0320, P0340, P1351,P1357 through P1364

Mass Air Flow (MAF) Sensor

The MAF directly measures the air mass flowing into the engine. The output from the MAF sensor is an analog DC signal between approximately 0.5 and 5.0 V, and it is used by the PCM to calculate the injection pulse duration for the air/fuel mixture. For transmission operations the MAF is used for the electronic pressure control (EPC), the control of the gearshift timing and the control of the torque converter lock-up clutch.

Symptoms: Incorrect gearshift timing, EPC pressure high or low, incorrect engagement of the TCC, as well as symptoms that are similar to a fault on the throttle position (TP) sensor. Malfunction indicator lamp (MIL) on.

DTCs: P0102, P0103, P1100, P1101

Transmission Control Switch (TCS)

The transmission control switch is a push-button switch. When the transmission control switch is pressed, a signal is sent to the PCM. The PCM then energizes the transmission control indicator lamp (TCIL) and engages or disengages fourth gear operation and provides coast braking in second and third.

Symptoms: No overdrive cancel when switch is cycled.

DTC: P1780

Transmission Control Indicator Lamp (TCIL)

The TCIL is located in the instrument panel and is labeled O/D OFF. The transmission controls switch (TCS) controls the ON/OFF operation of the TCIL. When the driver initially presses the TCS button, the TCIL comes ON to indicate that transaxle operation in fourth gear is disabled. When the driver presses the TCS again, the TCIL goes off.

Symptoms: If the TCIL fails ON or OFF, the driver may have an incorrect indication of transaxle operation.

DTCs: None

Throttle Position (TP) Sensor

The TP sensor is a potentiometer mounted on the throttle body. The TP sensor detects the position of the throttle plate and sends this information to the PCM as a varying voltage signal.

If there is a fault in the circuit of the TP sensor then the PCM detects that the TP sensor signal is outside the measuring range. The PCM then operates the transmission with a higher EPC pressure to prevent damage to the transmission. The PCM also uses this signal to determine the gearshift timing and for control of the EPC and the TCC.

Symptoms: Harsh engagement, fixed gearshift pressure, abnormal gearshift timing, TCC will not engage, TCC switchover. Malfunction indicator lamp (MIL) on.

DTCs: P0122, P0123, P1120, P1121, P1124, P1125

Transmission Fluid Temperature (TFT) Sensor

The TFT sensor is a thermistor (temperature dependent resistor) which is located on the solenoid valve body. The resistance value of the TFT sensor will vary with temperature. The PCM monitors the voltage across the TFT sensor to determine the temperature of the transmission fluid. The PCM uses this signal to determine the gearshift timing and to regulate the line pressure for operation under hot and cold temperatures. In addition, the PCM disables the operation of the torque converter lock-up clutch (TCC) at low transmission temperatures and adjusts the pressure of the electronic pressure control (EPC) to the temperature.

Symptoms: Improper TCC operation and EPC pressure.

DTCs: P0712, P0713, P1711, P1783

Transmission range (TR) sensor

The PCM sends a voltage signal to the TR sensor. The TR sensor contains a series of resistors that act as a voltage divider. The PCM monitors this voltage which corresponds to the position of the transmission range selector lever (P, R, N, D, 2, 1) to determine desired gear and electronic pressure control (EPC) pressure. The TR sensor is located on the transmission and also incorporates the circuits for neutral/start and the reversing lamps.

Symptoms: Harsh engagement and fixed gearshift pressure. Engine will possibly not crank. Possible downshift. Operation in second or third gear. Transmission does not display the correct gear. No operation in fourth gear, no manual first gear.

DTCs: P0707, P0708, P1705

Turbine Shaft Speed (TSS) Sensor

The TSS sensor is an inductive sensor which sends a signal to the PCM indicating the input speed of the turbine shaft. This signal is used to control the torque converter lock-up clutch (TCC). It is also used to determine the setting of the static pressure of the electronic pressure control (EPC) during gearshifts.

Symptoms: No power flow through the torque converter or harsh shifts. No fourth gear operation and engine braking in second and third gear. May flash the TCIL.

DTC: P0715

Output speed sensor (OSS)

The OSS sensor is an inductive sensor that detects the speed of the park gear or the drive sprocket. The signal describes the speed of the output shaft of the automatic transmission and is evaluated by the PCM. The PCM uses the output shaft speed together with other signals to determine the gearshift timing.

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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #7 - 03.03.10 at 23:36:32
 
Solenoid Valve Body Assembly

The solenoid valve body assembly contains the transmission fluid temperature sensor (TFT) sensor, as well as five PCM controlled output devices:

Electronic pressure control (EPC) solenoid
Shift solenoid 1 (SS1)
Shift solenoid 2 (SS2)
3-2 timing/coast clutch solenoid (3-2 T/CCS)
Torque converter lock-up clutch (TCC) solenoid valve
The PCM controls the operation of the transaxle through wiring to the solenoid valve body assembly mounted on the main control assembly. The PCM cable is connected to the solenoid valve body on the top of the transmission housing. In the event of faulty components the solenoid valve body should always be renewed as an entire unit.

Electronic pressure control (EPC) solenoid

The EPC solenoid is a variable force style (VFS) solenoid. The VFS solenoid is an electro-hydraulic actuator combining a solenoid and a regulating valve. The solenoid provides electronic pressure control (EPC) which regulates line pressure (LP) and the line modulator pressure (LM). This is controlled by producing a resisting pressure to the main regulator and line modulator circuits. The LP and LM pressures control the clutch application pressures.

Symptoms: Failed ON - minimum EPC pressure (minimum transmission torque capacity). May flash the TCIL.

Failed OFF - maximum EPC pressure, harsh engagements and harsh shifts.

Fault codes: P1746, P1747 - Check output circuit; is only caused by electrical fault.

Torque converter lock-up clutch (TCC) solenoid valve

The TCC solenoid valve is controlled by pulse-width modulation (PWM). It controls the engagement and disengagement of the bypass clutch in the torque converter. The pressure in the S4 circuit varies due to the pulse width modulation of the TCC solenoid valve, thus modulating engagement and disengagement of the bypass clutch in the torque converter.

Symptoms: Failed ON - Engine stalls in manual second. Engine lugging, poor performance at low engine speeds, harsh shifts.

Failed OFF - Poor fuel economy, overheating, TCC will not engage.

DTCs: P0741, P1742, P1743, P1744 May also be generated by other non-electronic related transmission hardware conditions.

Fault codes: P0743, P1767 - Check output circuit; is only caused by electrical fault.

3-2 Timing/Coast Clutch Solenoid (3-2 T/CCS)

The 3-2 T/CCS is a variable force style (VFS) solenoid. The VFS type solenoid is an electro-hydraulic actuator combining a solenoid and a regulating valve. It supplies pressure to the S3 circuit to control the release of the direct clutch and to apply the intermediate and overdrive band during a 3-2 downshift. The solenoid also regulates the pressure in the S3 circuit to control the application and release of the coast clutch.

Symptoms: Failed ON - no engine braking (except in fourth gear), delayed 3-2 downshifts.

Failed OFF - engine braking in second/third gears, firm or flared 3-2 downshifts, harsh 4-3 downshifts.

Fault codes: P1788, P1789 - Check output circuit; is only caused by electrical fault.

Shift Solenoid Assembly (SS1, SS2,SS3)

Shift solenoids 1 and 2 provide gear selection of first through fourth gears by providing ON/OFF pressure control to the shift valves.

SS1 Symptoms: Improper gear selection depending on failure mode and transaxle range selector lever position; refer to Shift Solenoid Application Chart No. 701.

Fault codes: P0731, P0734, P0750, P0751, P1751 - Check output circuit; is caused by electrical fault. May also be generated by other non-electrical related transmission hardware conditions.

SS2 symptoms: Incorrect choice of gear depending on fault mode and position of the gear lever; refer to table "Shift Solenoid Operation Chart".

Fault codes: P0733, P0755, P0756, P1756 - Check output circuit; is caused by electrical fault. May also be generated by other non-electrical related transmission hardware conditions.

OTHER CONCERNS: SHIFT SOLENOID OPERATION CHART

Solenoid Operation

The following solenoid operation chart shows normal solenoid operation for given operating modes.
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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #8 - 03.03.10 at 23:38:50
 
oh did i say auto transmission faults can be complex
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ring gear
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Re: mondeo automatic 4 speed CD4E
Reply #9 - 04.03.10 at 19:46:20
 
thanks for all that didnt get chance to check any of that out yet as i got landed with not one but two automatic ford transits what a week one down so back to the mondeo in the morning hopefully ill find something in that to match the mondeo an ill let ya know what the fix was. the is help much appreciated
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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #10 - 04.03.10 at 19:55:47
 
ring gear wrote on 04.03.10 at 19:46:20:
thanks for all that didnt get chance to check any of that out yet as i got landed with not one but two automatic ford transits what a week one down so back to the mondeo in the morning hopefully ill find something in that to match the mondeo an ill let ya know what the fix was. the is help much appreciated 



about 5 years ago
we had a transit motor home Jobie with auto shift problems. Sad Sad was a on going night mare. in the end the engineer who designed the system came over from Austria to reconfigure.re write the transmission software
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ring gear
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Re: mondeo automatic 4 speed CD4E
Reply #11 - 04.03.10 at 20:06:22
 
what a night mare mate this thing wouldnt start and then eventually got it going and then wouldn select gears then got it selecting gears and wouldnt start 2 faults two connections inside the (BJB) were loose which controlled power to the (TCM) transmission control module and and to the (HPU) hydraulic pump unit at the gear box then another it also controlled power supply for starter relay then another fault at the pcm a loose/poor connection which needed the pcm to earth it to control the power hold relay which was also tied in somewere with CAN lines so couldnt communicate through diagnostic in the end a total nightmare but always nice when something like that gets fixed. the other asm transit is in for it to be converted back to manual did you see many of tose happening in UK?
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ring gear
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Re: mondeo automatic 4 speed CD4E
Reply #12 - 11.03.10 at 18:13:17
 
After a few days of messing around ford advised to fit another new gearbox sure enough i did and problem solved.
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mr benz
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Re: mondeo automatic 4 speed CD4E
Reply #13 - 11.03.10 at 19:41:45
 
ring gear wrote on 11.03.10 at 18:13:17:
After a few days of messing around ford advised to fit another new gearbox sure enough i did and problem solved.



nightmare at least you got it.

well done
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