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Home >> Mercedes Benz >> 1987 >> 560SEC >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> 1983-88 & 1991 Brakes - Anti-Lock Brake System - 190E, 190D, 240D, 260E, 300CD, 300CE, 300E, 300D, 300SD, 300SDL, 300SEL, 300TD, 300TE, 350SD, 350SDL, 350SL, 380SE, 380SEC, 380SEL, 380SL, 420SEL, 500SEC, 500SEL, 560SEC, 560SEL, 560SL >> Testing >> Test 1 >> Testing Relay & Valve Relay In De-Energized Position

Testing Relay & Valve Relay In De-Energized Position

  1. Set rotary switch to position 1, ignition off. All LED's in tester should be off.
  2. If LED battery symbol in tester lights up, replace relay and valve relay.