Question about 2002 Suzuki XL-7
Transmission shifts through to drive and is showing three service codes,741 tcc lock-up solenoid,756 shift solenoid and 1875 4wd low switch circuit malfunction. Has fresh fluid and new filter.
hi..the transaxle converter clutch . tcc. uses a solenoid -operated valve located in the automatic transaxle to mechanically couple the engine flywheel to the output shaft of the transmission through the torque converter.that reduces the slippage loss in the converter.reducing emissions.but check the vss first.which is called the vehicle speed sensor.they both work together .if the vss is not working right it wont call on the tcc.
check this out..
Posted on Mar 06, 2009
DTC P1744 is "TCC - Excessive Slip
Detected During Full TCC Engagement". Which means that the Torque
Converter Clutch (TCC) is disengaged or the EPC pressure is at the
The most likely cause is a sticking or bad TCC solenoid inside the transmission. You can check the connector at the transmission to make sure it is clean and tight and that it is not damaged in any way.
If the TCC and wiring is okay, then pressure testing of the transmission will need to be done.
A new torque converter from Ford is about $265.00 and about 4 hours labor. Throw in a $40.00 TCC solenoid and I don't think it'll be more than $700.00 at worst.
If the pressure test is good then it's just going to be the $40.00 tcc solenoid and the cost of the transmission oil and filter changed which should be around $150.00
Good luck and hope it's just a loose wire harness to the solenoid which would cost $0.00 and just your time to locate the break in the wire. The other thing to, is to add a transmission fluid additive that would restore the clutch pack in the transmission and Torque Converter.
Posted on Nov 17, 2009
Testimonial: "thanks a lot very helpful and detailed explanation"
The MAF is almost certainly not the issue, as it would tend to generate other codes and more severe drivability problems. If the rebuild did not include replacement of the TCC solenoid, then it may need to be replaced. It can be tested by applying battery voltage to one lead momentarily, while the other side is grounded. If the connector is a single lead, clip a ground to any metal part of the body of the solenoid, or leave it installed when testing, if possible. If it is a double lead, reverse polarity once when testing. If the solenoid does not click or move, regardless of polarity, it is bad. You can also test the resistance across the solenoid. Use a known-good unit to determine appropriate resistance. Your dealer may be willing/able to tell you the appropriate value. If the unit being tested is very low or much higher resistance compared to the reference unit, or if the meter shows no connection, it is a bad solenoid. The test unit resistance should be within about 10% of the value of the reference unit.
Posted on Nov 17, 2009
"The PCM controls the torque converter clutch (TCC) solenoid valve pulse width modulation (PWM). The solenoid controls the hydraulic fluid for TCC apply and release. When the TCC is applied, the engine is coupled directly to the transmission through the TCC. The TCC slip speed should be near 0.
If the PCM detects high torque converter slip when the TCC is commanded ON, then DTC P0741 sets. DTC P0741 is a type B DTC.
Conditions for Running the DTC
• No TP DTCs P0121, P0122 or P0123.
• No VSS DTCs P0502 or P0503.
• No AT ISS DTCs P0716 or P0717.
• No TCC stuck ON DTC P0742.
• No IMS DTCs P1820, P1822, P1823 or P1825.
• No TCC PWM solenoid valve DTC P1860.
• The engine run time is greater than 5 seconds.
• The time since the gear select lever change is greater than 6 seconds.
• The IMS indicates D2, D3 or D4.
• The transmission gear ratio indicates 2nd, 3rd or 4th gear.
• The transmission fluid temperature is 20-133°C (68-271°F).
• The TP angle is 10-50 percent.
• The engine torque is 43-215 N·m (32-159 lb ft).
• The TCC solenoid valve is commanded ON.
Conditions for Setting the DTC
TCC slip speed exceeds its limit for a given torque for 5 seconds.
Refer to Torque Converter Clutch Slip Speed .
Action Taken When the DTC Sets
• The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for Setting the DTC are met.
• The PCM inhibits 4th gear if the transmission is in hot mode.
• The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM stores this information as Freeze Frame and Failure Records.
• The PCM stores DTC P0741 in PCM history during the second consecutive trip in which the Conditions for Setting the DTC are met.
Conditions for Clearing the MIL/DTC
• The PCM turns OFF the MIL during the third consecutive trip in which the diagnostic test runs and passes.
• A scan tool can clear the MIL/DTC.
• The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without an emission-related diagnostic fault occurring.
• The PCM cancels the DTC default actions when the ignition switch is OFF long enough in order to power down the PCM.
Posted on Apr 21, 2010
Testimonial: "ty that makes perfect since"
Tips for a great answer:
Apr 18, 2014 | 2005 GMC Sierra 2500HD 4WD
Dec 18, 2013 | 2007 Chevrolet Suburban Three-Quarter-Ton...
Nov 09, 2013 | 2001 Pontiac Montana
Apr 28, 2011 | Dodge Ram 3500 Cars & Trucks
Dec 27, 2010 | 2001 Cadillac DeVille
Dec 04, 2010 | 1994 Chevrolet Lumina APV
Jun 10, 2010 | 2000 Dodge Ram 1500 Truck
Sep 25, 2008 | 2005 Dodge Ram 3500
146 people viewed this question
Usually answered in minutes!