Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000025DLI
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: LIGHTING (EXT): LIGHTING SYSTEM (for TMC Made): TERMINALS OF ECU; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

TERMINALS OF ECU

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY

(a) Disconnect the power distribution box assembly and main body ECU (multiplex network body ECU) connectors.

(b) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

8A-8 - Body ground

Ground

Always

Below 1 Ω

8D-8 - Body ground

Ground

Always

Below 1 Ω

8M-1 - Body ground

Auxiliary battery power supply

Ignition switch off

11 to 14 V

8J-1 - Body ground

Auxiliary battery power supply

Ignition switch off

11 to 14 V

(c) Connect the power distribution box assembly and main body ECU (multiplex network body ECU) connectors.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Terminal Description

Condition

Specified Condition

8D-27 - Body ground*5

R shift position switch signal

Ignition switch off, reverse (R) not selected

Below 1 V

Ignition switch ON, reverse (R) selected

11 to 14 V

8F-9 - Body ground

CXPI communication line

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation

8F-2 - Body ground*2

Daytime running light system drive output

Daytime running light system operating

Below 1 V

Daytime running light system not operating

11 to 14 V

8F-3 - Body ground

H-LP LH relay drive output

  • 15 seconds or more after ignition switch turned off
  • Taillights off

9.5 to 14 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

Below 1 V

8F-4 - Body ground

H-LP RH relay drive output

  • 15 seconds or more after ignition switch turned off
  • Taillights off

9.5 to 14 V

  • Ignition switch ON or within 15 seconds after ignition switch turned off
  • Taillights on

Below 1 V

8F-20 - Body ground

Front side marker lights*2, parking lights*2 and accessory lights*3 drive output

Taillights off

Below 1 V

Taillights on

11 to 14 V

8H-7 - Body ground*1

Front fog lights drive output

Taillights on, fog light switch in off position

Below 1 V

Taillights on, fog light switch in front position

11 to 14 V

8H-13 - Body ground

Back-up lights drive output

Ignition switch off, reverse (R) not selected

Below 1 V

Ignition switch ON, reverse (R) selected

11 to 14 V

8H-15 - Body ground

Taillights drive output

Taillights off

Below 1 V

Taillights on

11 to 14 V

I85-8 (CLTB) - I85-21 (CLTE)

Automatic light control sensor power supply output

Ignition switch off

Below 1 V

Ignition switch ON

11 to 14 V

I85-14 (AHBI) - Body ground*4

Auto high beam switch signal input

Auto high beam switch off

11 to 14 V

Auto high beam switch on

Below 1 V

I85-15 (AHID) - Body ground*4

Auto high beam switch indicator drive output

Ignition switch ON, auto high beam switch off

11 to 14 V

Ignition switch ON, auto high beam switch on

Below 1 V

I85-20 (CLTS) - Body ground

Automatic light control sensor signal input

Ignition switch off

Below 1 V

Ignition switch ON

Pulse generation (See waveform 1)

I85-22 (DIM) - Body ground*2

High beam headlight drive output

Light control switch in head position and dimmer switch in high or high flash position

Below 1 V

Dimmer switch not in high or high flash position

11 to 14 V

I85-26 (HEAD) - Body ground

Light control switch head position input

Light control switch not in head position

11 to 14 V

Light control switch in head position

Below 1 V

  • *1: w/ Front Fog Light
  • *2: for Bulb Type Turn Signal Light
  • *3: w/ Accessory Light
  • *4: w/ Automatic High Beam System
  • *5: for HV Model

(1) Waveform 1

Item

Content

Tester Connection

I85-20 (CLTS) - Body ground

Tool setting

2 V/DIV., 10 ms./DIV.

Condition

Ignition switch ON

HINT:

The communication waveform changes according to the surrounding brightness.

CHECK COMBINATION METER ASSEMBLY

for 12.3 Inch Display: Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (for 12.3 Inch Display): TERMINALS OF ECU

except 12.3 Inch Display: Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): TERMINALS OF ECU

CHECK STEERING SENSOR

for HV Model: Click here 2023 MY Corolla Corolla HV [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): TERMINALS OF ECU

for Gasoline Model: Click here 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model TMC Made): TERMINALS OF ECU

CHECK HYBRID VEHICLE CONTROL ECU (for HV Model)

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): TERMINALS OF ECU