TEST MODE PROCEDURE
SENSOR CHECK USING DEALER MODE (SIGNAL CHECK)
NOTICE:
HINT:
(a) Procedure to enter Dealer Mode (Signal Check)
(1) Turn the ignition switch off.
(2) Apply the parking brake.
(3) Check that the shift lever is in P.
(4) Connect the GTS to the DLC3.
(5) Turn the ignition switch to ON.
(6) Check that the steering wheel is centered.
(7) Turn the GTS on.
(8) Switch the skid control ECU (brake actuator assembly) to Dealer Mode (Signal Check) using the GTS.
Chassis > Brake/EPB > Utility
Tester Display |
---|
Signal Check |
(b) Confirm the system has entered Dealer Mode (Signal Check).
(1) Confirm that the ABS warning light and slip indicator light indicate the Dealer Mode pattern (blinking at 0.25 second intervals).
HINT:
(c) Booster malfunction check (w/ Brake Pedal Load Sensing Switch)
(1) Depress the brake pedal several times with the engine stopped to release the vacuum from the brake booster assembly.
(2) Turn the ignition switch on (IG) (engine stopped) and depress the brake pedal at a pedal force of approximately 74 N (7.5 kgf, 16.6 lbf) or above for 1 second or more and check that the warning light illuminates. (Malfunction check)
(3) After the booster malfunction check is complete, maintain a pedal force of approximately 74 N (7.5 kgf, 16.6 lbf) or above on the brake pedal and turn on the engine. Immediately release the brake pedal and check that the warning light turns off. (Normal status check)
NOTICE:
Before checking again after starting the engine, exit and then activate the test mode and depress the brake pedal several times with the engine stopped to release the booster vacuum.
(d) Speed Sensor Check
(1) Start the engine.
(2) With the steering wheel is centered, accelerate the vehicle to a speed of 45 km/h (28 mph) or more without spinning the wheels for 1 second or more.
(3) Accelerating to a vehicle speed of 3 km/h (2 mph) or more, drive the vehicle in reverse for 1 second or more.
(4) Check that the ABS warning light goes off.
NOTICE:
HINT:
If the sensor check completes successfully, the ABS warning light turns off when the vehicle is being driven, and indicates the Dealer Mode pattern (blinking at 0.25 second intervals) when the vehicle is stopped.
(5) Stop the vehicle.
(e) VSC OFF Switch (Combination Switch Assembly) Check
(1) Press the VSC OFF switch (combination switch assembly).
(2) Check that the VSC OFF indicator light comes on.
(3) Press the VSC OFF switch (combination switch assembly) again.
(4) Check that the VSC OFF indicator light turns off.
(f) Brake Hold Switch (Electric Parking Brake Switch Assembly) Check
HINT:
Perform the check with the system in a normal condition.
(1) Make sure the following conditions are met:
(2) Press the brake hold switch (electric parking brake switch assembly).
(3) Check that the brake hold standby indicator light comes on.
(4) Press the brake hold switch (electric parking brake switch assembly) again.
(5) Check that the brake hold standby indicator light turns off.
(g) End of Sensor Check
(1) If the sensor check completes successfully, the ABS warning light turns off when the vehicle is being driven, and indicates the Dealer Mode pattern (blinking at 0.25 second intervals) when the vehicle is stopped.
NOTICE:
(h) End of Dealer Mode (Signal Check)
(1) Turn the ignition switch off.
(2) Disconnect the GTS.
(i) Dealer Mode (Signal Check) Inspection Item Chart
Item Name |
Range |
Judgment Description |
Trouble Area |
---|---|---|---|
*: w/ Brake Pedal Load Sensing Switch | |||
Output Signal of Front Speed Sensor RH |
Incomplete / complete |
|
|
Output Signal of Front Speed Sensor LH |
Incomplete / complete |
|
|
Output Signal of Rear Speed Sensor RH |
Incomplete / complete |
|
|
Output Signal of Rear Speed Sensor LH |
Incomplete / complete |
|
|
Change in Output Signal of Front Speed Sensor RH |
Incomplete / complete |
Check the stability of the sensor output waveform |
|
Change in Output Signal of Front Speed Sensor LH |
Incomplete / complete |
Check the stability of the sensor output waveform |
|
Change in Output Signal of Rear Speed Sensor RH |
Incomplete / complete |
Check the stability of the sensor output waveform |
|
Change in Output Signal of Rear Speed Sensor LH |
Incomplete / complete |
Check the stability of the sensor output waveform |
|
Judgment of Failure State* |
Incomplete / complete |
Check that the brake pedal load sensing switch is normal |
|