U1000 (blink 85) on Toyota Passo (KGC10): E-At Abnormal Transmission

Short answer: U1000 means “E-At Abnormal Transmission”. The car’s computer has found a fault in the Engine control (EFI) system and turns on the Check engine light (MIL). First check: is the harness between EFI ECU - A/T ECU normal?.

Code

U1000 · blink 85

System

Engine control (EFI)

Dashboard light

Check engine light (MIL)

Also sold as

Daihatsu Boon, Daihatsu Sirion (M300)

Applies to

K3-VE: M301 (Sirion 1.3 = JDM Boon M310S? / Passo QNC10)

Confidence

high (factory manual, export spec)

Source

carmanualsclub.com

What to check, in order

1. Is the harness between EFI ECU - A/T ECU normal?
2. Is the A/T ECU normal?
3. Check whether there is any poor contact at the connector section.

Related on this car

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

← U0101/82 P0141/24 →

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.