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.
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.
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.
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.
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.
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.
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 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.
How do you clear an ABS code on a Lexus LS400?
If the codes reappear it means you haven’t fixed the problem. Note: airbag code 41 cannot be cleared using this method, here’s how to clear it. ABS & TRAC codes are cleared by keeping the jumper wire in Tc and E1 and then pressing the brake pedal 8 or more times within 3 seconds.
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