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
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