What does this diagram show?

An exploded parts view of the automatic transmission control valve body from a Nissan service manual (page AT-25, figure SAT660), labeling all internal valves, plugs, and pins.

What valves are contained in this control valve body?

Labeled valves include the lock-up control valve, speed cut valve, back-up valve, pressure regulator valve, 3rd-2nd downshift valve, throttle valve, detent valve, throttle modulator valve, manual valve, fail-safe valve, 1st-2nd shift valve, 2nd-3rd shift valve, 1st-2nd control valve, pressure modifier valve, top reducing valve, 3rd-2nd timing valve, and 1st reducing valve.

Where is the lock-up control valve located?

The lock-up control valve is shown installed in the separate lock-up body, illustrated at the top of the exploded diagram along with the speed cut valve.

Home/ Registry/ Nissan/ Micra/ 1990 Nissan Micra/ Photo supermotors.net/registry/media/252952

Nissan Automatic Transmission Control Valve Body Exploded Diagram (AT-25)

Exploded diagram of automatic transaxle control valve body identifying each valve, spring, plug and separator plate

‹ ›

Exploded parts diagram (AT-25) of the automatic transaxle control valve body with all valves and springs labeled.

AI caption October 2005 · Photo 207 of 412

This is page AT-25 from a Nissan automatic transmission (AT) service manual section titled "Repair for Component Parts – Control Valve Body." The page consists of a single exploded-view illustration (figure reference SAT660) showing the disassembly of the automatic transmission control valve body. Every valve, spring, plug, and pin in the assembly is called out by name, including the lock-up control valve, lock-up body, speed cut valve, parallel pin, lower control valve body, back-up valve, pressure regulator valve, 3rd-2nd downshift valve, throttle valve, detent valve, throttle modulator valve and its plug, manual valve, fail-safe valve, 1st-2nd shift valve, 2nd-3rd shift valve, 1st-2nd control valve, pressure modifier valve, top reducing valve, 3rd-2nd timing valve, 1st reducing valve, and various plugs. Circled numbers 1 through 14 identify additional components (springs/plugs) in the exploded sequence. A footnote instructs that parts marked with an asterisk ("*") — the lower control valve body, 1st-2nd shift valve, and 2nd-3rd shift valve — must be replaced together as a set. This diagram is useful for anyone disassembling or reassembling the valve body of this Nissan automatic transmission, showing the order and orientation of internal valves and springs.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What does this diagram show?: An exploded parts view of the automatic transmission control valve body from a Nissan service manual (page AT-25, figure SAT660), labeling all internal valves, plugs, and pins.
Which valve body parts must be replaced as a set?: Parts marked with an asterisk (*) — the lower control valve body, 1st-2nd shift valve, and 2nd-3rd shift valve — must be replaced together as a set, per the note 'Replace part with "*" as a set.'
What valves are contained in this control valve body?: Labeled valves include the lock-up control valve, speed cut valve, back-up valve, pressure regulator valve, 3rd-2nd downshift valve, throttle valve, detent valve, throttle modulator valve, manual valve, fail-safe valve, 1st-2nd shift valve, 2nd-3rd shift valve, 1st-2nd control valve, pressure modifier valve, top reducing valve, 3rd-2nd timing valve, and 1st reducing valve.
Where is the lock-up control valve located?: The lock-up control valve is shown installed in the separate lock-up body, illustrated at the top of the exploded diagram along with the speed cut valve.