ANTI-LOCK BRAKE SYSTEM (ABS) 5A4-19 Hold Valve Test Purpose: The purpose of this test is to detect brake pipe and valve line harness wire wrong connections and valve trouble. This test will help you confirm the result of your repair service including the removal/reinstallation of brake pipe, valve line harness and valve. Select a Iso Solenoid from the Front Left Solenoid Valve Test Function Menus. Front Left Solenoid Valve Test Actuator Test Dump Solenoid F0: F1: ABS Relay Test Return Pump Relay Test F3: Front Right Solenoid Valve Test Rear Left Solenoid Valve Test Rear Right Solenoid Valve Test ABS Check Light Test Exhaust Brake Cut Test F4: F5: F6: F7: 3.
Press the Hold Valve “ON” Soft Key with the brake pedal stepped on. 4. Release the brake pedal. 5. Make sure that the Hold Valve “ON” aimed at by Tech 2 and the wheel locked position are the same. If different, check brake pipe, valve line harness wiring and H/UNIT. Repair is needed if abnormality is found. 6. Conduct Step 2 through Step 5 above on all the four wheels. Test conditions: The ignition key is the “ON” position with the four wheels lifted up. The brake pedal is stepped on, released and stepped on again with the parking brake released. Test procedure: 1. Connect Tech 2 with the vehicle, and select Special Function from the menus. 2.
Select a Hold Valve Menu from the Special Function Menus. CAUTION: When conducting this test, please observe the following cautions. 1. Do not start the engine without fail. 2. Lift up the vehicle at the level floor. Secure a clearance from the floor surface enough to allow the lifted tire to rotate. 3. Maintain the lift up. 4. Wipe the floor surface to remove water and oil so that the surface may become unslippery. 5. Do not load the vehicle. When lifting up the vehicle, be sure to observe the lifting up points. Refer to vehicle lifting points in 0A section. Actuator Test F0: F1: ABS Relay Test Return Pump Relay Test F4: F5: F6: F7: F3:
Front Right Solenoid Valve Test Rear Left Solenoid Valve Test Rear Right Solenoid Valve Test ABS Check Light Test Exhaust Brake Cut Test