P0535 (blink 44) on Toyota Passo (KGC10): Air Conditioner Evaporator Temperature Sensor Circuit

Short answer: P0535 means “Air Conditioner Evaporator Temperature Sensor Circuit”. The car’s computer has found a fault in the Engine control (EFI) system and turns on the Check engine light (MIL). First check: are the signals from the air conditioner evaporator temperature sensor inputted to the EFI ECU?.

Code

P0535 · blink 44

System

Engine control (EFI)

Dashboard light

Check engine light (MIL)

Also sold as

Daihatsu Boon, Daihatsu Sirion (M300)

Applies to

1KR-FE: M300 (Sirion export = JDM Boon M300S/M301S(4WD? see gaps) & Passo KGC10/KGC15). JDM-spec ECU not separately documented | K3-VE: M301 (Sirion 1.3 = JDM Boon M310S? / Passo QNC10)

Confidence

high (factory manual, export spec)

Source

carmanualsclub.com

Symptoms and when it is set

1. When the signals from the air conditioner evaporator temperature sensor are not outputted continu- ously over a certain length of time after starting with the air conditioner switch turned "ON"

Likely causes

1. Air conditioner (A/C) evaporator temperature sensor
2. Open wire or short circuit for the air conditioner evaporator temperature sensor
3. EFI ECU

What to check, in order

1. Are the signals from the air conditioner evaporator temperature sensor inputted to the EFI ECU?
2. Is the harness between the air conditioner evaporator temperature sensor and the EFI ECU normal?
3. Is the output of the air conditioner evaporator temperature sensor normal?

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

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Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.