What is the idle signal on a Lexus LS400?
45 – When idle switch is ON, main throttle position sensor signal is 1.5V or higher 46 – Main throttle position sensor signal is 4.3V or higher, or main throttle position sensor signal is 0.2V or lower when idle switch is OFF 47 – When idle switch is ON, sub-throttle position sensor signal is 1.45V or higher
How do you read the Diagnostic Code on a Lexus LS400?
1) In order to read the code the battery must be 11v or higher, throttle valve fully closed, transmission in neutral position, and AC turned off. For checking transmission codes the OD switch must in on (pushed in). Connect terminals Te1 and E1 by placing a short piece of wire in the TDCL diagnostic port under the steering wheel.
Where do you put the jumper wire on a Lexus LS400?
For engine and transmission codes you place the jumper wire in Te1 and E1. For air bag codes, ABS and TRAC codes, you place the jumper wire in Tc and E1.
How long does it take for a Lexus diagnostic code to be output?
Multiple codes can be output. In this case the lowest numbered code is output first followed by a 2.5 second pause between other higher numbered codes in increasing numerical order. Once all stored codes have been output there will be a 4.5 second pause and then the codes repeat.
45 – When idle switch is ON, main throttle position sensor signal is 1.5V or higher 46 – Main throttle position sensor signal is 4.3V or higher, or main throttle position sensor signal is 0.2V or lower when idle switch is OFF 47 – When idle switch is ON, sub-throttle position sensor signal is 1.45V or higher
1) In order to read the code the battery must be 11v or higher, throttle valve fully closed, transmission in neutral position, and AC turned off. For checking transmission codes the OD switch must in on (pushed in). Connect terminals Te1 and E1 by placing a short piece of wire in the TDCL diagnostic port under the steering wheel.
For engine and transmission codes you place the jumper wire in Te1 and E1. For air bag codes, ABS and TRAC codes, you place the jumper wire in Tc and E1.
Multiple codes can be output. In this case the lowest numbered code is output first followed by a 2.5 second pause between other higher numbered codes in increasing numerical order. Once all stored codes have been output there will be a 4.5 second pause and then the codes repeat.
How do you read Trac code on Lexus LS400?
For ABS codes, you count the blinks on the “ANTILOCK” light. For TRAC codes, you count the blinks on the “TRAC” light. The codes are all two digits, the first digit is output first, it will pause 1.5 seconds and then output the second digit outputs.
Where is the OD switch on a Lexus LS400?
For checking transmission codes the OD switch must in on (pushed in). Connect terminals Te1 and E1 by placing a short piece of wire in the TDCL diagnostic port under the steering wheel.
How do you clear diagnostic code on Lexus LS400?
3) Once repairs have been made, clear all stored codes by removing the 20 amp EFI fuse shown above for 10 seconds or more with the ignition switch off. You can also clear codes by removing the negative lead on the battery for the same amount of time, but you’ll lose all your clock, radio, and memory settings.
Where do you find the engine code on a Lexus LS400?
For engine codes, you count the blinks on the check engine light. For transmission codes, you count the blinks on the “O/D OFF” light. For airbag codes, you count the blinks on the “airbag” light.
When is the idle switch off on a Lexus LS400?
27 – When power supply to step motor is stopped, sub-throttle valve does not reach its fully-open position 45 – When idle switch is ON, main throttle position sensor signal is 1.5V or higher 46 – Main throttle position sensor signal is 4.3V or higher, or main throttle position sensor signal is 0.2V or lower when idle switch is OFF
Where are the diagnostic terminals on a Lexus LS400?
Connect terminals Te1 and E1 by placing a short piece of wire in the TDCL diagnostic port under the steering wheel. You can also connect these terminals using the check connector located in the engine bay. For engine and transmission codes you place the jumper wire in Te1 and E1.
Do you need an OBDII reader for Lexus LS400?
If you have a 1990-1994 LS then you have an OBDI system (On-board diagnostics I). This system is what I will cover here. If you have a 1995 LS on up then you have an OBDII system. Reading codes from these systems requires you to use an OBDII code reader.
Which is the best DIY site for Lexus LS400?
Welcome to LexLS.com, the ultimate Lexus LS400 DIY resource! The goal is to provide a comprehensive source of information and web resources. Most importantly are my in depth how to do-it-yourself picture tutorials.
For checking transmission codes the OD switch must in on (pushed in). Connect terminals Te1 and E1 by placing a short piece of wire in the TDCL diagnostic port under the steering wheel.
For ABS codes, you count the blinks on the “ANTILOCK” light. For TRAC codes, you count the blinks on the “TRAC” light. The codes are all two digits, the first digit is output first, it will pause 1.5 seconds and then output the second digit outputs.