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Home >> Isuzu >> 1994 >> Trooper S, Standard >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System - 4-Wheel >> Trouble Shooting >> Symptom Diagnosis >> Test A-4, Brake Pedal Feel Is Abnormal

Test A-4, Brake Pedal Feel Is Abnormal

  1. Ensure brakelights operate when brake pedal is applied. If brakelights operate, go to next step. If brakelights do not operate, inspect fuse C-14 (15-amp), located in fuse box under left side of instrument panel. Inspect brakelight switch for proper installation. Ensure continuity exists at brakelight switch terminals when brake pedal is applied. Ensure continuity does not exist when brake pedal is released. Replace brakelight switch or repair wiring as necessary.
  2. Connect Pinout Box (J-35592). Using a DVOM, measure voltage between pinout box terminals No. 10 and 25 when brake pedal is applied. If low voltage exists, repair wiring between brakelight switch and EBCM. If battery voltage exists, check continuity between pinout box terminals No. 10, 20 and 34, and body ground.
  3. If continuity does not exist, repair or replace wiring as necessary. If continuity exists, check for disconnected wiring or connection. Repair as necessary. If wiring and connections are okay, inspect ABS system for hydraulic system leak or air in hydraulic system. Repair as necessary.
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