Quote:
Originally Posted by Telescopist
Okay. Now you have captured my interest. What's up with the 4Runner ATF temperature reading?
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OK - As in: Sorry you asked, You'll be...
This is missing all the fun-filled diagrams, tables, and illustrations, but the core info is there in all its splendor.
Especially notable is the part where you take a paperclip and short out 2 pins on your OBD connector. Screw that up and you'll fry a few thousand bucks worth of processors.
Not to be confused with the old-fashioned tranny dipsticks we always used to see.
Proceed with this operation only with close and sober adult supervision.
Your Vehicle: 2012 Toyota Truck 4 Runner 4WD V6-4.0L (1GR-FE)
Service and Repair
*A750F AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION FLUID:
ADJUSTMENT*
*NOTICE:*
*** *This transmission requires Toyota Genuine ATF WS.*
*** *After servicing the transmission, you must follow the ATF
adjustment procedure.*
*** *Maintain the vehicle in a horizontal position while adjusting the
fluid level.*
1. BEFORE FILLING TRANSMISSION
o When you have replaced the entire transmission, transmission
pan, drain plug, valve body and/or torque converter, proceed to
the "Transmission Fill" procedures.
o When you have replaced the transmission hose and/ or output
shaft oil seal, proceed to the "Fluid Temperature Check" procedures.
2. TRANSMISSION FILL
(a) Remove the refill plug and overflow plug.
*Text in Illustration*
(b) Fill the transmission through the refill hole until fluid begins to
trickle out of the overflow tube.
*Text in Illustration*
(c) Reinstall the overflow plug.
(d) Fill the transmission with the amount of fluid listed in the table
below.
*Reference Capacity:*
(e) Install the refill plug.
*HINT*
*If you cannot fill the listed amount of fluid, perform the following:*
(1) Start the engine and idle it.
*NOTICE:*
*Check that electrical systems such as the air conditioning system,
audio system and lighting system are off.*
(2) Move the shift lever through the entire gear range to circulate the
fluid.
(3) Wait for 30 seconds with the engine idling.
(4) Stop the engine.
(5) Remove the refill plug.
(6) Fill the transmission with the remaining fluid until the amount in
the table has been filled.
(7) Install the refill plug.
3. FLUID TEMPERATURE CHECK
*NOTICE:*
*The ATF temperature can be confirmed by using the Techstream.*
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Enter the following menus: Powertrain / ECT / Data List / A/T Oil
Temperature 1.
(e) Check the ATF temperature.
*NOTICE:*
*If the ATF temperature is higher than 45°C (113°F), turn the ignition
switch off and wait until the fluid temperature drops to below 40°C
(104°F).*
4. FLUID LEVEL CHECK
*NOTICE:*
*** *It is necessary to change to temperature detection mode in order
to idle the vehicle appropriately.*
*** *The ATF temperature must be between 40 and 45°C (104 and 113°F)
to accurately check the fluid level.*
(a) When using the Techstream:
Enter the following menus: Powertrain / ECT / Active Test / Connect the
TC and TE1.
*Standard condition:*
*Indicator lights in the combination meter blink.*
(b) When not using the Techstream:
Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
*SST : 09843-18040*
*Standard condition:*
*Indicator lights in the combination meter blink.*
*Text in Illustration*
(c) Start the engine and idle it.
*NOTICE:*
*Check that electrical systems such as the air conditioning system,
audio system and lighting system are off.*
(d) Slowly move the shift lever from P to S, and then change the gear
from 1st to 5th. Then return the shift lever to P.
*HINT*
*Slowly move the shift lever to circulate the fluid through each part of
the transmission.*
(e) Move the shift lever to D, and quickly move it back and forth
between N and D (once within 1.5 seconds) for at least 6 seconds. This
will activate the fluid temperature detection mode.
*Standard condition:*
*Indicator light [D] remains illuminated for 2 seconds and then turns off.*
*Text in Illustration*
(f) When using the Techstream:
Return the shift lever to P and terminate the Active Test on the Techstream.
(g) When not using the Techstream:
Return the shift lever to P and disconnect SST from the DLC3.
(h) Allow the engine to idle until the fluid temperature reaches 40 to
45°C (104 to 113°F).
*HINT*
*The indicator [D] will come on again when the fluid temperature reaches
40°C (104°F) and will blink if it is higher than 45°C (113°F).*
*Indicator [D] Indication of ATF Temperature*
(i) Remove the overflow plug and gasket with the engine idling.
(j) Wait until the overflow slows to a trickle.
*Text in Illustration*
*NOTICE:*
*If the fluid does not overflow, perform the following:*
(1) Remove the refill plug and gasket.
(2) Refill the transmission through the refill hole until fluid begins
to trickle out of the overflow tube.
(3) Wait until the overflow slows to a trickle.
(k) Install a new gasket and the overflow plug.
*Torque : 20 Nm (204 kgf-cm, 15 ft-lbf)*
(l) Install a new gasket and the refill plug.
*Torque : 37 Nm (379 kgf-cm, 27 ft-lbf)*
5. COMPLETE
(a) Turn the ignition switch off.
(b) When using the Techstream:
Disconnect the Techstream from the DLC3.
(c) Inspect for automatic transmission fluid leak.
Just some huckster pumping out fake news. Follow the NASA site. You are right that the first test image was from a single star.
my old Mercedes' (several), anything from 93 to 97 or early 98, if the entire main engine wiring harness plus throttle body harness weren't replaced, the cars are completely unreliable and can't be fixed. luckily, most cars that were being driven enough got this done by the dealer while still fairly new, like both our 93 and 94 had the updated harness. the factory original harness those years had biodegradable 'RoHS' insulation that completely disintegrated inside the outer black jackets.
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