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Home >> Isuzu >> 2003 >> Axiom Base, RWD >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Brake Control System >> General Diagnosis >> Actuator Test
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Actuator Test

This mode is used to exercise the ABS actuators and make sure they operate normally. Prior to the test, pay attention to the cautions below. (When checking the solenoid valve system, be sure to jack up the vehicle.)

CAUTION:
  • Before testing, be sure that the brakes work normally.
  • Make sure that the battery is fully charged. Conduct the test by two persons (A TECH 2 operator and a vehicle checker).
  • Be sure to start ACTUATOR TEST with the engine stopped.
  • Before testing, make sure that electrical trouble, if any, has been completely repaired. Conducting tests of ABS solenoid with electrical circuit problem remaining uncorrected could damage the control unit.
Fig 1: Tech 2 Display - Actuator Test (1 Of 4)
G02714688Courtesy of ISUZU MOTOR CO.

Select "F3: Actuator Test" by funct on key from Application Menu. and push enter key.

Return Pump Relay Test: Select "F0: Return Pump Relay Test" and push enter key.

Using soft key. check the return pump function.

Fig 2: Tech 2 Display - Actuator Test (2 Of 4)
G02714689Courtesy of ISUZU MOTOR CO.

Solenoid Valve Test Se ECT required Solenoid Valve Test and push the enter key.

Push the soft key under "Confirm" box.

Normal Function:

Rotate the wheel.

Yes: Go to next display

No. Failed. Check hydraulic brake system. Refer to DISC & DRUM article.

Fig 3: Tech 2 Display - Actuator Test (3 Of 4)
G02714690Courtesy of ISUZU MOTOR CO.

Rotate the wheel.

Yes: Go to next display

No: Failed, check brake line and bleed air. Refer to DISC & DRUM article.

Rotate the wheel.

Yes: Go to next display

No: Failed, check brake disc, caliper or drum. Refer to DISC & DRUM article.

Release Function

Rotate the wheel.

Yes: Go to next display

No: Failed, check brake disc, caliper or drum. Refer to DISC & DRUM article.

Fig 4: Tech 2 Display - Actuator Test (4 Of 4)
G02714691Courtesy of ISUZU MOTOR CO.

Reapply Function:

Rotate the wheel.

Yes: Go to next display

No: Failed, check brake line and bleed air. Refer to DISC & DRUM article.

Test completed.

To return Application Menu. Push the soft key under "Confirm" box.