Land Rover LR3 ZF6HP26 no start after overhaul - Transmission Digest

Main Navigation

Advertisement
Social Connect
Resources
Our Brand Family
Transmission Digest - Babcox Media
Helping transmission shops achieve successful and profitable operation.
Transmission TECH/TALK

Land Rover LR3 ZF6HP26 no start after overhaul

Wayne Colonna
By Wayne Colonna
Published:
Tech-Talk-Aug-Figure-8-1400

The complaint

A 2006 Land Rover LR3 equipped with the ZF6HP26 transmission has a post-overhaul complaint of a no-start condition. Part of the transmission overhaul process included the replacement of the mechatronic unit.

Related Articles

The cause

The mechatronic unit that was purchased from a parts distributor and installed was for a Ford 6R60 transmission (figure 7) which did not contain a Transmission Control Module. The Land Rover requires a mechatronic unit that contains a TCM.

Tech-Talk-Aug-Figure-7-600x600
Figure 1.

The correction

Once the mechatronic unit with a TCM was installed and programmed (figure 2, at the top of the page), the Land Rover started and performed normally.

Read more articles in our Transmission Tech/Talk series here.

You May Also Like

Figure 12.
CVT-Transmission-2
Featured

Shift of the shaft: Diagnosing Chrysler 48RE manual shaft issues

The TorqueFlite transmission has been around since mid-to-late 1950s. There have been many changes surrounding the manual shaft and rooster comb through the years. This transmission shaft controls the position of the manual valve that directs oil for the gear ranges, but it also is used for a Reverse light control as well as Park/Neutral

Randall Schroeder
By Randall Schroeder
Randall Schroeder is a Sonnax technical specialist and member of the Sonnax TASC Force (Technical Automotive Specialties Committee), a group of recognized industry technical specialists, transmission rebuilders and Sonnax Industries Inc. technicians.
Published:

The TorqueFlite transmission has been around since mid-to-late 1950s. There have been many changes surrounding the manual shaft and rooster comb through the years. This transmission shaft controls the position of the manual valve that directs oil for the gear ranges, but it also is used for a Reverse light control as well as Park/Neutral safety control. As it evolved, changes to these safety backup switches caused extra stress against the rooster comb that posed new challenges to the technician. 

Read Full Article

More Transmission TECH/TALK Posts
Jatco JF613E transmission quick reference material

For those working on the Jatco JR613E transmission, a widespread transmission with plenty of applications, the following should be a helpful guide. Related Articles – Powertrain industry directory and buyer’s guide 2024 – Sometimes, a diagnostic code is all you need – 10L80 and 10R80 pump gear differences Domestic and international applications for the JF613E

By Wayne Colonna
Looking for the cause of repeated 6T40 torque converter failure

The converter clutch was applied just enough to drag but not enough to kill the engine.

By Wayne Colonna
Tech-Talk-Q4-Figure-4-1400
6T40 delayed engagements after overhaul

The problem lies in the compensator piston that a generation two clutch housing uses compared to the generation one housing.

By Wayne Colonna
Tech-Talk-Q4-Figure-7-1400
GM 6T70/75 slips and delays in first

A 2015 Chevrolet Equinox equipped with the 3.6-liter engine and 6T75 transmission has complaints of a delayed engagement into drive and slips in first gear.

By Wayne Colonna
Tech-Talk-Q4-Figure-11-1400

Other Posts

Alto releases friction and steel module for ZF 6HP transmissions

Alto has introduced a new friction and steel module for ZF 6HP series transmissions. The module works with ZF 6HP19/X/A (model years 2004 and on) and ZF 6HP21/X (model years 2007 and on) for ZF, Audi, BMW and Volkswagen vehicles. Related Articles – Transtar to offer recycled engines – Sonnax introduces GM 6L80, 6L90 output

By Alex Crissey
Shift Pointers: What to do when the 62TE TRS tab breaks

How frustrating it is when on a hot summer day, as you go to open a nice cold can of your drink of choice, and the tab breaks off? You are outside, away from any tools to remedy the problem quickly. It now requires a MacGyver mentality looking around at the resources available to get

By Wayne Colonna
Going the extra mile: Proving your transmission repair suspicions

A 2003 Honda Pilot with a five-speed three-shaft transmission came into our shop with a customer concern that the vehicle had no power, and the “D” light was flashing. I first did a scan for codes to see what it came up with, and the scan tool returned four DTCs: P1298 (ELD voltage high), P0135 (H02S

By Paul Loch
RRfeature-1400
Diagnosing Ford 10R60, 10R80 and 10R140 series speed sensor issues

Ford 10-speed 10R series transmissions utilize four two-wire, Hall-effect sensors — TSS, ISSA, ISSB and OSS — for providing speed signals to PCM or TCM. They are supplied nine volts by a PCM or TCM and assist in the control of clutch apply/release timing that is used in determining shift quality, including TCC. Related Articles

By Jim Mobley