Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000ZX6I
Model Year Start: 2017 Model: Sienna Prod Date Range: [08/2016 - 11/2017]
Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: TERMINALS OF ECU; 2017 MY Sienna [08/2016 - 11/2017]

TERMINALS OF ECU

1. CHECK DRIVING SUPPORT ECU

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A44-30 (B) - A44-25 (GND)

L - BR

Battery

Always

11 to 14 V

A44-39 (CA2H) - A44-25 (GND)

R - BR

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 1)

A44-17 (CA2L) - A44-25 (GND)

W - BR

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 2)

A44-25 (GND) - Body ground

BR - Body ground

Ground

Always

Below 1 V

A44-7 (MODE) - A44-25 (GND)

W - BR

Steering pad switch signal (Distance control switch signal)

Ignition switch ON, Steering pad switch signal ON

0 to 2 V

Ignition switch ON, Steering pad switch signal OFF

11 to 14 V

A44-18 (CA1N) - A44-25 (GND)

W - BR

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 3)

A44-40 (CA1P) - A44-25 (GND)

B - BR

CAN communication signal

Ignition switch ON

Pulse generation

(See waveform 4)

A44-32 (WIP2) - A44-25 (GND)

L - BR

Wiper switch signal

Ignition switch ON, wiper switch HI position

11 to 14 V

Ignition switch ON, wiper switch LO position

6 to 9 V

(a) Waveform 1

(1) CAN communication signal

Item

Content

Tester Name

A44-39 (CA2H) - A44-25 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(b) Waveform 2

(1) CAN communication signal

Item

Content

Tester Name

A44-17 (CA2L) - A44-25 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

HINT:

The waveform varies depending on the CAN communication signal.

(c) Waveform 3

(1) CAN communication signal

Item

Content

Tester Name

A44-18 (CA1N) - A44-25 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

(d) Waveform 4

(1) CAN communication signal

Item

Content

Tester Name

A44-40 (CA1P) - A44-25 (GND)

Tester Range

1 V/DIV., 10 μsec./DIV.

Condition

Ignition switch ON

2. CHECK ECM

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

A69-33 (TC) - B67-53 (E1)

P - BR

Ground

Ignition switch ON

10 to 14 V

Terminals TC and CG of DLC3 connected

Below 1 V

A69-42 (ST1-) - B67-53 (E1)

LG - BR

Stop light signal

Ignition switch ON, Brake pedal depressed (Stop light switch on)

Below 1 V

Ignition switch ON, Brake pedal released (Stop light switch off)

10 to 14 V

A69-27 (STP) - B67-53 (E1)

L - BR

Stop light signal

Ignition switch ON, Brake pedal released (Stop light switch off)

Below 1 V

Ignition switch ON, Brake pedal depressed (Stop light switch on)

10 to 14 V

A69-56 (CCHG) - B67-53 (E1)

P - BR

Distance control switch signal

Ignition switch ON, Cruise control main switch on, MODE switch on

Below 1 V

Ignition switch ON, Cruise control main switch on, MODE switch off

10 to 14 V

A69-20 (LGND) - Body ground

R - Body ground

Ground

Always

Below 1 Ω

A69-41 (CCS) - B67-53 (E1)

B - BR

Cruise control main switch signal

Ignition switch ON

10 to 14 V

Ignition switch ON, CANCEL switch on

6.6 to 10.1 V

Ignition switch ON, - SET switch on

4.5 to 7.1 V

Ignition switch ON, + RES switch on

2.3 to 4.0 V

Ignition switch ON, Main switch on

Below 1 V

B67-53 (E1) - Body ground

BR - Body ground

Ground

Always

Below 1 Ω

If the value is not within the specified range, the ECM may have a malfunction.