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Home >> Mercedes Benz >> 1987 >> 300D >> Repair and Diagnosis >> Brakes >> Traction Control >> 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 3 >> Testing Valve Relay

Testing Valve Relay

Ignition on. Rotary switch position 2. ABS indicator light on, LED not lit. Valve relay defective or connecting lines interrupted.