DPB Brake System Stiffness Test
Validates all 4 brake lines by measuring DPB plunger stroke values and validating that none are blocked, have air or leakage
TEST-SELF_BRAKE_X_DPB-ESP-SYSTEM-CHECK
Gen3/tasks/TEST-SELF_BRAKE_X_DPB-ESP-CHECK-REAR-CROSSED-LINES
Applies pressure to each individual corner in turn to compare the output values and validate the brakes. If executing with DIAG_LINK_ACTIVE then EPBs will release one at a time, which is required if CHECK_SWAPPED_REAR_LINES is true.
Open a version to see its description, requirements, and input definitions. Hardware configuration and live vehicle checks also determine availability.
Will release parking brakes one at a time. The vehicle may shift! Make sure the vehicle is on a flat surface or a lift, and surrounding area is safe.
ROUTINE_PARAMETERS · Dict
Input parameters for the DPB UDS routine
Firmware default: Not specified
AXLE_STROKE_LIMITS · Dict
Stroke limits threshold for each axle to ensure that there is no air in the system
Firmware default: Not specified
PLUNGER_LEAKAGE_DELTA · Float
Stroke threshold to ensure that there is no leakage in the system
Firmware default: Not specified
PRESSURE_LEAKAGE_DELTA · Float
Threshold to ensure that there is no leakage in the system
Firmware default: Not specified
STROKE_PERC_DIFF_LIMITS · List
Percentage diff limits for plunger stroke to ensure that both sides of each axle has a similar stiffness
Firmware default: Not specified
PRESSURE_PERC_DIFF_LIMITS · List
Percentage diff limits for plunger pressure to ensure that both sides of each axle has a similar stiffness
Firmware default: Not specified
PRESSURE_LEAKAGE_DELTA_CRITICAL · Bool
If pressure leakage delta exceed threshold will fail the routine
Firmware default: Not specified
Validates all 4 brake lines by measuring DPB plunger stroke values and validating that none are blocked, have air or leakage
TEST-SELF_BRAKE_X_DPB-ESP-SYSTEM-CHECK
Applies pressure to each individual corner in turn to compare the output values and validate the brakes. If executing with DIAG_LINK_ACTIVE then EPBs will release one at a time, which is required if CHECK_SWAPPED_REAR_LINES is true.
TEST-SELF_BRAKE_X_DPB-ESP-CORNER-STIFFNESS-TEST
Measures the brake system stiffness of burnished brakes and tests the brake pedal switch. Stiffness threshold is selected based on chassis and brake hardware type.
TEST_BRAKE_X_STIFFNESS-TEST-PRESSURE-BURNISHED
Measures the brake system stiffness. Select burnished or unburnished to determine the pass/fail threshold. Stiffness threshold is selected based on chassis and brake hardware type. Stiffness by wheel circuit is also measured, but not used for pass/fail.
TEST_BRAKE_X_STIFFNESS-TEST-SERVICE