Data List / Active Test

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: DATA LIST / ACTIVE TEST

1. READ DATA LIST

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.

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

(f) According to the display on the Techstream, read the "Data List".

EMPS













* *: This item will be display on the Techstream, but it does not apply this model.

2. CONTROL HISTORY (DATA LIST)

EMPS





HINT
* The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal if the steering wheel is not turned for approximately 10 minutes with the power switch on (READY).
* If the battery is not sufficiently charged or the voltage decreases temporarily, the amount of power assist will be reduced and the P/S warning light will come on. In such cases, the amount of power assist returns normal when the auxiliary battery voltage recovers.
* When any value other than 0 is displayed for the "battery voltage reduction history", inspect the auxiliary battery Component Tests and General Diagnostics.

3. PERFORM 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.

(a) Turn the power switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the power switch on (IG).

(d) Turn the Techstream on.

(e) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(f) Check the operation by referring to the table below.

Combination Meter