3FE IDL-E2 voltage help…. (1 Viewer)

[LandCruiserNut]

Hello, everyone. I have been chasing several issues for the past few months.

1st problem. When truck is at normal operating temperature it sometimes will crank but not start. However, with a spray of started fluid it starts back up. Replaced the EFI temperature sensor thinking that could be the culprit. Result has not solved the problem.

2. Truck began to hesitate when driving and erratic idling. Jumped E1 to tE1 and code 41 and 51 showed. Replaced Thottle position sensor and code 41 disappeared but 51 remains.

3. Began trying to sort the code 51 issue thinking it could be the cause of the crank no start issue when engine is at operating temperature. I found that the IDL-E2 voltage was too high. For the real techs? Where do I go from here.

 

[jonheld]

Where do I go from here.

Did you check for proper setup of the TPS as referenced starting on page FI-68 before measuring voltages? Also in the service specifications section A-8/A-10.
Also, please be certain you're on the correct pin of the ECU or measure directly at the TPS connector. Also, be certain that the throttle valve is open when measuring.
The AFM should not be disconnected when testing.

On the ECU side, you want connector E5-pin 12 IDL switch (GRN/WHT) and E5-pin 9 E2 not a hard GND, but GND internal to the ECU (BRN/BLK).

On the TPS connector you want T1-pin 3 IDL switch (GRN/WHT) and T1-pin 4 E2 (BRN/BLK).