Scan Tool Testing and Procedures

UF1AE TRANSFER: FOUR WHEEL DRIVE CONTROL SYSTEM: DATA LIST / ACTIVE TEST

DATA LIST / ACTIVE TEST
HINT:
By accessing the Data List displayed on the Techstream, you can perform such functions as reading the values of switches and sensors without removing any parts. Reading the Data List is the first step in troubleshooting and is one method to shorten labor time.

1. DATA LIST OF 4WD CONTROL ECU
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Following the display on the Techstream, select "Data List".






2. ACTIVE TEST OF 4WD CONTROL
HINT:
Performing the Active Test using the Techstream allows the relay, actuator, etc. to operate without removing any parts. Performing the Active Test as the first step in troubleshooting is one way to shorten labor time. It is possible to display the Data List during the Active Test.

(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Following the display on the Techstream, select "Active Test".