Last Modified: 7-3-2017 6.8:8.0.40 Doc ID: RM000001A5Q007X
Model Year Start: 2007 Model: LX470 Prod Date Range: [08/2006 -           ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: DATA LIST / ACTIVE TEST; 2007 MY LX470 [08/2006 -        ]

DATA LIST / ACTIVE TEST

1. READ DATA LIST

HINT:

Using the intelligent tester's DATA LIST allows switch, sensor, actuator and other item values to be read without out removing any parts. Reading the DATA LIST early in troubleshooting is one way to save time.

(a) Connect the intelligent tester (with CAN VIM) to the DLC3.

(b) Turn the ignition switch ON.

(c) Read the DATA LIST according to the display on the tester.

Skid control ECU assembly

Item

Measurement Item / Range (Display)

Normal Condition

Diagnostic Note

HB MOT RELAY

HB Motor relay status /

ON or OFF

-

-

ABS MOT RELAY

Motor relay status /

ON or OFF

-

-

SOL RELAY

Solenoid relay status /

ON or OFF

-

-

PRESS HIGH

HIGH hydraulic brake boost pressure /

ON or OFF

-

-

PRESS LOW

LOW hydraulic brake boost pressure /

ON or OFF

-

-

VSC / TRC OFF SW

VSC OFF switch /

ON or OFF

-

-

IDLE SW

Main idle switch

ON or OFF

ON: Accelerator pedal released

OFF: Accelerator pedal depressed

-

STOP LIGHT

Stop light wheel operation /

ON or OFF

ON: Brake pedal released

OFF: Brake pedal depressed

-

PKB SW

PKB SW /

ON or OFF

ON: Parking brake applied

OFF: Parking brake released

-

ABS OPERT FR

Front right wheel operation /

BEFORE or OPERATE

BEFORE: No ABS operation (Front right)

OPERATE: During ABS operation (Front right)

-

ABS OPERT FL

Front left wheel operation /

BEFORE or OPERATE

BEFORE: No ABS operation (Front left)

OPERATE: During ABS operation (Front left)

-

ABS OPERT RR

Rear right wheel operation /

BEFORE or OPERATE

BEFORE: No ABS operation (Rear right)

OPERATE: During ABS operation (Rear right)

-

ABS OPERT RL

Rear left wheel operation /

BEFORE or OPERATE

BEFORE: No ABS operation (Rear left)

OPERATE: During ABS operation (Rear left)

-

WHEEL SPD FR

Front right wheel speed /

Min.: 0 km/h, Max.: 326.4 km/h

Actual wheel speed

Speed indicated on speedometer

WHEEL SPD FL

Front left wheel speed /

Min.: 0 km/h, Max.: 326.4 km/h

Actual wheel speed

Speed indicated on speedometer

WHEEL SPD RR

Rear right wheel speed /

Min.: 0 km/h, Max.: 326.4 km/h

Actual wheel speed

Speed indicated on speedometer

WHEEL SPD RL

Rear left wheel speed /

Min.: 0 km/h, Max.: 326.4 km/h

Actual wheel speed

Speed indicated on speedometer

DECELERATE SENS

G sensor (GL1 filter) /

Min.: -1.869, Max.: 1.869

Approximately 0 +- 0.13 G when vehicle is stationary

Reading changes when vehicle is bounced

DECELERATE SENS2

G sensor (GL2 filter) /

Min.: -1.869, Max.: 1.869

Approximately 0 +- 0.13 G when vehicle is stationary

Reading changes when vehicle is bounced

IG VOLTAGE

ECU IG power voltage /

UNDER or NORMAL or OVER

-

-

SFRR

SFRR /

ON or OFF

-

-

SFRH

SFRH /

ON or OFF

-

-

SFLR

SFLR /

ON or OFF

-

-

SFLH

SFLH /

ON or OFF

-

-

SRRR (SRR)

SRRR (SRR) /

ON or OFF

-

-

SRRH (SRH)

SRRH (SRH)/

ON or OFF

-

-

SRLR

SRLR /

ON or OFF

-

-

SRLH

SRLH /

ON or OFF

-

-

SRCF (SA1)

SRCH (SA1) /

ON or OFF

-

-

SRCR (SA2)

SRCR (SA2) /

ON or OFF

-

-

SRMF (SMCF, SA3)

SRMF (SMCF, SA3) /

ON or OFF

-

-

SRMR (SMCR, STR)

SRMR (SMCR, STR) /

ON or OFF

-

-

THROTTLE

Throttle position sensor /

Min.: 0 deg, Max.: 125 deg

-

-

ENGINE SPD

Engine speed /

Min.: 0 rpm, Max.: 6000 rpm

Actual engine speed

-

YAW RATE

Yaw rate sensor /

Min.: -128 deg/s, Max.: 128 deg/s

-

-

YAW ZERO VALUE

Memorized zero value /

Min.: -128 deg/s, Max.: 128 deg/s

-

-

STEERING ANG

Steering sensor /

Min.: -1682 deg, Max.: 1877 deg

-1682 to 1877 deg
  • Turning the steering wheel changes the value
  • Left: Becomes greater
  • Right: Becomes smaller

MAS CYL PRS 1

Master cylinder pressure 1 /

Min.:0 V, Max.: 5 V

When brake pedal is released:

0.3 to 0.9 V

Reading increases when brake pedal is depressed

AIR BLD SUPPORT

Air bleed support /

NOT SUP or SUPPORT

w/ BA: Supported

w/ VSC: Not supported

-

TEST MODE

Test mode operation /

NORMAL or TEST

NORMAL: Normal mode

TEST: During test mode

-

#CODES

Number of trouble code /

Min.: 0, Max.: 255

Min.: 0, Max.: 45

-

2. PERFORM ACTIVE TEST

HINT:

Performing the intelligent tester's ACTIVE TEST allows relay, VSV, actuator and other items to be operated without removing any parts. Performing the ACTIVE TEST early in troubleshooting is one way to save time. The DATA LIST can be displayed during the ACTIVE TEST.

(a) Connect the intelligent tester (with CAN VIM) to the DLC3.

(b) Turn the ignition switch ON.

(c) Perform the ACTIVE TEST according to the display on the tester.

Skid control ECU assembly

Item

Test Details

Diagnostic Note

SFRR

Turns ABS solenoid (SFRR)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFRH

Turns ABS solenoid (SFRH)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFLR

Turns ABS solenoid (SFLR)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFLH

Turns ABS solenoid (SFLH)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRRR

Turns ABS solenoid (SRRR)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRRH

Turns ABS solenoid (SRRH)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRLR

Turns ABS solenoid (SRLR)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRLH

Turns ABS solenoid (SRLH)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRCF (SA1)

Turns ABS solenoid (SRCF (SA1))

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRCR (SA2)

Turns ABS solenoid (SRCR (SA2))

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRMF (SMCF, SA3)

Turns ABS solenoid (SRCF, SA3)

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRMR (SMCR, STR)

Turns ABS solenoid (SRMR (SMCR, STR))

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFRR & SFRH

Turns ABS solenoid SFRR & SFRH

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFLR & SFLH

Turns ABS solenoid SFLR & SFLH

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRRH & SRRH

Turns ABS solenoid SRRR & SRRH

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRLR & SFLH

Turns ABS solenoid SRLR & SRLH

ON / OFF

Operation of solenoid (clicking sound) can be heard

SFRH & SFLH

Turns ABS solenoid SFRH & SFLH

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRCF & SRCR

Turns ABS solenoid SRCF & SRCR

ON / OFF

Operation of solenoid (clicking sound) can be heard

SRMF & SRMR

Turns ABS solenoid SRMF & SRMR

ON / OFF

Operation of solenoid (clicking sound) can be heard

SOL RELAY

Turns ABS solenoid relay

ON / OFF

Operation of solenoid (clicking sound) can be heard

ABS MOT RELAY

Turns ABS motor relay

ON / OFF

Operation of solenoid (clicking sound) can be heard

TRAC MOT RELAY

Turns TRC motor relay

ON / OFF

Operation of solenoid (clicking sound) can be heard

ABS WARN LIGHT

Turns ABS warning light

ON / OFF

Observe combination meter

VSC WARN LIGHT

Turns VSC warning light

ON / OFF

Observe combination meter

VSC/TRC OFF IND

Turns VSC / TRC OFF indicator

ON / OFF

Observe combination meter

SLIP INDILIGHT

Turns SLIP indicator light

ON / OFF

Observe combination meter

BRAKE WRN LIGHT

Turns BRAKE warning light

ON / OFF

Observe combination meter

VSC/BR WARN BUZ

Turns VSC / BRAKE warning buzzer

ON / OFF

Buzzer can be heard