DYNAMIC RADAR CRUISE CONTROL SYSTEM > TERMINALS OF ECU

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CHECK DISTANCE CONTROL ECU

I034896E02


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
B (L13-1) - GND (L13-12)
L - G
Battery
Always
10 to 16 V
CANH (L13-8) - GND (L13-12)
BR- G
CAN communication signal
CAN communication circuit
Pulse generation
CANL (L13-9) - GND (L13-12)
GR- G
CAN communication signal
CAN communication circuit
Pulse generation
SGND (L13-10) - Body ground
B - Body ground
Ground
Always
Below 1 Ω
GND (L13-12) - Body ground
G - Body ground
Ground
Always
Below 1 Ω
IGB (L13-13) - GND (L13-12)
R - G
Engine switch on signal
Engine switch off
Below 2 V
IGB (L13-13) - GND (L13-12)
R - G
Engine switch on signal
Engine switch on (IG)
10 to 16 V
LRDD (L13-22) - SGND (L13-10)
O - B
Millimeter wave radar sensor input signal
Engine switch on (IG)
Pulse generation
(see waveform 1)
LRRD (L13-23) - SGND (L13-10)
LG - B
Millimeter wave radar sensor output signal
Engine switch on (IG)
Pulse generation
(see waveform 2)
MODE (L13-16) - GND (L13-12)
W - G
Steering pad switch signal (Distance control switch signal)
Engine switch on (IG), Steering pad switch signal ON
0 to 2 V
MODE (L13-16) - GND (L13-12)
W - G
Steering pad switch signal (Distance control switch signal)
Engine switch on (IG), Steering pad switch signal OFF
9 to 16 V


    E109730E01
  1. Reference: waveform 1

    HINT:
    1. Terminal: LRDD - SGND
    2. Gauge set: 2 V/DIV., 10 msec./DIV.
    3. Condition: Engine switch on (IG)



  2. E109731E01
  3. Reference: waveform 2

    HINT:
    1. Terminal: LRRD - SGND
    2. Gauge set: 2 V/DIV., 5 msec./DIV.
    3. Condition: Engine switch on (IG)


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

E109055E01


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
STP (A7-4) - E1 (E7-7)
R-B - BR
Stop light signal
Brake pedal released (Stop light switch OFF)
Below 1 V
STP (A7-4) - E1 (E7-7)
R-B - BR
Stop light signal
Brake pedal depressed (Stop light switch ON)
10 to 14 V
CCS (A7-31) - E1 (E7-7)
L-B - BR
Cruise control main switch signal
Engine switch on (IG)
10 to 16 V
CCS (A7-31) - E1 (E7-7)
L-B - BR
Cruise control main switch signal
CANCEL switch ON
6.6 to 10.1 V
CCS (A7-31) - E1 (E7-7)
L-B - BR
Cruise control main switch signal
SET/COAST switch ON
4.5 to 7.1 V
CCS (A7-31) - E1 (E7-7)
L-B - BR
Cruise control main switch signal
RES/ACC switch ON
2.3 to 4.0 V
CCS (A7-31) - E1 (E7-7)
L-B - BR
Cruise control main switch signal
Main switch ON
Below 1 V
ST1- (A6-8) - E1 (E7-7)
G-W - BR
Stop light signal
Engine switch on (IG), Brake pedal depressed (Stop light switch ON)
Below 1 V
ST1- (A6-8) - E1 (E7-7)
G-W - BR
Stop light signal
Engine switch on (IG), Brake pedal released (Stop light switch OFF)
10 to 14 V
CCHG (A6-20) - E1 (E7-7)
R-L - BR
Distance control switch signal
Engine switch on (IG), Cruise control main switch ON, MODE switch ON
Below 1 V
CCHG (A6-20) - E1 (E7-7)
R-L - BR
Distance control switch signal
Engine switch on (IG), Cruise control main switch ON, MODE switch OFF
10 to 14 V
LGND (A6-29) - Body ground
L-B - Body ground
Ground
Always
Below 1 Ω
E1 (E7-7) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω

CHECK MILLIMETER WAVE RADAR SENSOR

I039263E01


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
LGND (B8-1) - Body ground
L-B - Body ground
Ground (Distance signal)
Always
Below 1 Ω
SGND (B8-2) - Body ground
BR - Body ground
Ground
Always
Below 1 Ω
LRDD (B8-3) - SGND (B8-2)
G - BR
Millimeter wave radar sensor output signal
Engine switch on (IG)
Pulse generation
(see waveform 1)
LRRD (B8-4) - SGND (B8-2)
LG - BR
Millimeter wave radar sensor input signal
Engine switch on (IG)
Pulse generation
(see waveform 2)
IGB (B8-5) - SGND (B8-2)
R - BR
Power source
Engine switch on (IG)
10 to 14 V


    E109730E01
  1. Reference: waveform 1

    HINT:
    1. Terminal: LRDD - SGND
    2. Gauge set: 2 V/DIV., 10 msec./DIV.
    3. Condition: Engine switch on (IG)



  2. E109731E01
  3. Reference: waveform 2

    HINT:
    1. Terminal: LRRD - SGND
    2. Gauge set: 2 V/DIV., 5 msec./DIV.
    3. Condition: Engine switch on (IG)