Land Rover LR3 ZF6HP26 no start after overhaul - Transmission Digest

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Transmission TECH/TALK

Land Rover LR3 ZF6HP26 no start after overhaul

Wayne Colonna
By Wayne Colonna
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.

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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.

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The complaint

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

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