Mf1a Transfer / 4wd / Awd

Data List / Active Test

~3min read
DATA LIST / ACTIVE TEST

HINT:

Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.

NOTICE:

In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

1. DATA LIST OF AWD CONTROL ECU

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Following the display on the Techstream, select "Data List".

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

4WD Warning Light

AWD Warning Light /

OFF or ON

OFF: AWD warning light off

ON: AWD warning light on

-

Stop Light SW

Stop Light Switch /

OFF or ON

OFF: Brake pedal released

ON: Brake pedal depressed

-

Forward and Rearward G

Deceleration sensor (Forward and Rearward G) /

Min.: -25.10 m/s2

Max.: 24.90 m/s2

Approximately 0 +/-0.13 while stationary

-

FR Wheel Speed

FR Wheel Speed /

Min.: 0 km/h,

Max.: 326 km/h

Min.: 0 km/h,

Max.: 326 km/h

Almost no difference from the speedometer

FL Wheel Speed

FL Wheel Speed /

Min.: 0 km/h,

Max.: 326 km/h

Min.: 0 km/h,

Max.: 326 km/h

Almost no difference from the speedometer

RR Wheel Speed

RR Wheel Speed /

Min.: 0 km/h,

Max.: 326 km/h

Min.: 0 km/h,

Max.: 326 km/h

Almost no difference from the speedometer

RL Wheel Speed

RL Wheel Speed /

Min.: 0 km/h,

Max.: 326 km/h

Min.: 0 km/h,

Max.: 326 km/h

Almost no difference from the speedometer

SLC Solenoid Current

SLC Solenoid (electromagnetic solenoid) Current /

Min.: 0 A

Max.: 3 A

Min.: 0 A

Max.: 3 A

-

Number of DTC

Number of DTCs /

0 to 255

0 to 255

-

2. ACTIVE TEST OF AWD CONTROL ECU

HINT:

Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts to operate without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Following the display on the Techstream, select "Active Test".

Tester Display

Test Part

Control Range

Diagnostic Note

4WD Warning Light

AWD Warning Light

ON: AWD warning light on

OFF: AWD warning light off

Observe accessory meter

Test yourself

A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.