Transmits mainly the following signals to E-SUS control unit via CAN communication.
• Vehicle speed signal
• Brake pressure control signal
• Brake lamp switch signal

ECM

Transmits mainly the following signals to E-SUS control unit via CAN communication.
• Requested torque signal

Unified meter and A/C amp.

Transmits mainly the following signals from E-SUS control unit via CAN communication.
• Sport mode indicator lamp signal

SCS-10

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (E-SUS CONTROL UNIT)

DIAGNOSIS SYSTEM (E-SUS CONTROL UNIT)

CONSULT-III Function

INFOID:0000000005236142

FUNCTION

CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

*: If the memory in E-SUS control unit is erased, the DTC diagnosis result is also erased.

ECU IDENTIFICATION

E-SUS control unit part number can be read.

SELF-DIAGNOSTIC RESULT

Display Item List

Refer to

SCS-58, "DTC Index"

DATA MONITOR

Display Item List

ACTIVE TEST

CAUTION:

• Always perform while the vehicle is stopped.

Diagnostic test mode

Function

ECU identification

E-SUS control unit part number can be read.

Self-diagnosis result

Self-diagnostic results can be read and erased quickly. *

Data monitor

Input/Output data in the E-SUS control unit can be read.

Active test

CONSULT-III drives some actuators via E-SUS, and changes some command signal values with-
in the specified range.

Monitor item (Unit)

Remarks

VEHICLE SPEED (km/h) or (MPH)

Vehicle speed recognized by E-SUS control unit

ST ANGLE SIG (deg)

Steering angle recognized by E-SUS control unit

IGN (V)

Ignition voltage supplied to E-SUS control unit

REQUESTED TRQ (Nm)

Required torque recognized by E-SUS control unit

FR BDY G-SEN VOL (V)

Output voltage from front RH body vertical G sensor

FL BDY G-SEN VOL (V)

Output voltage from front LH body vertical G sensor

R G-SEN VOL (V)

Output voltage from rear body vertical G sensor

FR WHL G-SEN VOL (V)

Output voltage from front RH wheel vertical G sensor

FL WHL G-SEN VOL (V)

Output voltage from front LH wheel vertical G sensor

FR ACTUATOR CRNT (A)

Control current for front RH wheel shock absorber actuator operation

FL ACTUATOR CRNT (A)

Control current for front LH wheel shock absorber actuator operation

RR ACTUATOR CRNT (A)

Control current for rear RH wheel shock absorber actuator operation

RL ACTUATOR CRNT (A)

Control current for rear LH wheel shock absorber actuator operation

G-SEN VOL (V)

Voltage supplied to G-sensor

BRK FLD PRESS (bar)

Fluid pressure recognized by E-SUS control unit when brake is applied

STP LAMP SW (On/Off)

Brake pedal operation status recognized by E-SUS control unit

MODE SW (On/Off)

E-SUS mode lamp condition

FAIL MODE SIG (On/Off)

E-SUS control unit is in fail-safe status.

CONTROL MODE (AUTO/SPORT)

Each control mode status
AUTO: AUTO mode
SPORT: SPORT mode

DIAGNOSIS SYSTEM (E-SUS CONTROL UNIT)

SCS-11

< SYSTEM DESCRIPTION >

SCS

• Always check shock absorber actuator if DTC is detected using the shock absorber actuator active

test.

• Shock absorber actuator

The control signal from CONSULT-III forces activation of the shock absorber actuator. The check can be per-
formed by confirming the operation noise.

• Mode lamp

The control signal from CONSULT-III forces activation of the mode lamp (ON/OFF) for check.

Test item

Display Item

Display

Operation half cycle

SHOCK ABSORB-
ER ACTUATOR

FRONT RIGHT ACTUATOR

0.1 seconds – 1 second (cycles in 0.1 seconds)

FRONT LEFT ACTUATOR

REAR RIGHT ACTUATOR

REAR LEFT ACTUATOR

FOUR WHEEL ACTUATOR

Test item

Display Item

Display

Illumination status

OFF

MODE LAMP

SPORT

OFF

SCS-12

< DTC/CIRCUIT DIAGNOSIS >

C1D01 VEHICLE SPEED SIGNAL

DTC/CIRCUIT DIAGNOSIS

C1D01 VEHICLE SPEED SIGNAL

Description

INFOID:0000000005588906

The vehicle speed signal is transmitted from the ABS actuator and electric unit (control unit) to E-SUS control
unit via CAN communication.

DTC Logic

INFOID:0000000005588907

DTC DETECTION LOGIC

DTC REPRODUCTION PROCEDURE

CAUTION:

If the CAN signal "Unavailable" or "Broken" is received while the battery voltage is in the low (between
6 V and 9 V) condition, and when intending to perform another self-diagnosis operation to record the
DTC history, always start the procedure after checking that the battery voltage is within the specified
normal value.

CHECK E-SUS CONTROL UNIT SIGNAL

With CONSULT-III

Start the engine.

CAUTION:

Always hold the vehicle stopped.

Select “DATA MONITOR” of “E-SUS”.

Check the value of “IGN” on “DATA MONITOR” screen.

Is the value in “DATA MONITOR” “between 6 V and 9 V” or more?

YES

>> GO TO 2.

>> Perform the diagnosis for the charging system. Refer to

CHG-23, "Symptom Table"

DTC REPRODUCTION PROCEDURE

With CONSULT-III

Perform “E-SUS” self-diagnosis.
Is DTC “C1D01” detected?

YES

>> Proceed to diagnosis procedure. Refer to

SCS-12, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005588908

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

With CONSULT-III

Perform “ABS” self-diagnosis.
Is DTC detected?

YES

>> Check the detected DTC items.

>> GO TO 2.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

DTC

Display Item

Malfunction detected condition

Possible causes

C1D01

VEHICLE SPEED SIG

• A malfunction is detected in the vehicle speed

signal output from the ABS actuator and electric
unit (control unit) to CAN communication.

• No transmission of vehicle speed signal from the

ABS actuator and electric unit (control unit).

• Harness or connector

(CAN communication
line)

• ABS actuator and

electric unit (control
unit)

• E-SUS control unit
• Battery low voltage

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