Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Terminals Of Ecu

Toyota Corolla Cross (2022-2025) Service Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning System / Terminals Of Ecu

TERMINALS OF ECU

CHECK TIRE PRESSURE WARNING ECU AND RECEIVER

*A

w/ Smart Key System

*B

w/o Smart Key System

*a

Front view of wire harness connector

(to Tire Pressure Warning ECU and Receiver)

-

-

(a) Disconnect the O209*1 or O221*2 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side.

  • *1: w/ Smart Key System
  • *2: w/o Smart Key System
w/ Smart Key System

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

O209-1 (IGR) - O209-12 (GND)

IG power source

Ignition switch ON

10 to 16 V

O209-7 (+B) - O209-12 (GND)

Power supply (from auxiliary battery)

Always

10 to 16 V

O209-9 (CANH) - O209-10 (CANL)

CAN communication line

Ignition switch off

54 to 69 Ω

O209-12 (GND) - Body ground

Ground

Always

Below 1 Ω
w/o Smart Key System

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

O221-1 (IGR) - O221-12 (GND)

IG power source

Ignition switch ON

10 to 16 V

O221-7 (+B) - O221-12 (GND)

Power supply (from auxiliary battery)

Always

10 to 16 V

O221-9 (CANH) - O221-10 (CANL)

CAN communication line

Ignition switch off

54 to 69 Ω

O221-12 (GND) - Body ground

Ground

Always

Below 1 Ω

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