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Home >> Mercedes Benz >> 1999 >> CLK430 >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Keyless Entry System - C230, C280, CLK320, E300, E320, E430, E500, Cl500 & Cl600 >> System Tests >> Test 15: ESC Control Module Data Lines

Test 15: ESC Control Module Data Lines

  1. Disconnect ESC control module connector. Disconnect ignition lock control module connector "B". Measure resistance between ESC control module connector terminal No. 3 and ignition lock control module connector "B", terminal No. 4. Resistance should be less than one ohm. If resistance is as specified, go to next step. If resistance is not as specified, repair wiring. See WIRING DIAGRAMS .
  2. Measure resistance between ESC control module connector terminal No. 4 and ignition lock control module connector terminal "B", terminal No. 5. Resistance should be less than one ohm. If resistance is as specified, go to next step. If resistance is not as specified, repair wiring. See WIRING DIAGRAMS .
  3. Measure resistance between ground and ESC control module connector terminal No. 3, and between ground and ESC control module connector terminal No. 4. Resistance should be more than 20 k/ohms. If resistance is as specified, go to next step. If resistance is not as specified, repair wiring. See WIRING DIAGRAMS .
  4. Measure resistance between positive battery terminal and ESC control module connector terminal No. 3, and between positive battery terminal and ESC control module connector terminal No. 4. Resistance should be more than 20 k/ohms. If resistance is as specified, ESC control module data lines are okay at this time. If resistance is not as specified, repair wiring. See WIRING DIAGRAMS .
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