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Home >> Jeep >> 1993 >> Wrangler Base, 2.5 P >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Test 23A >> No Response Message

No Response Message

  1. On Cherokee, remove and inspect fuse No. 7. If fuse is blown, check for possible short to ground in Light Green/Yellow wire between ignition switch and terminal No. 53 of CAB connector. If fuse is okay, go to next step. On Grand Cherokee and Grand Wagoneer, remove and inspect fuse No. 15. If fuse is blown, check for possible short to ground in Light Green/Yellow wire between ignition switch and terminal No. 53 of CAB connector. If fuse is okay, go to next step. On Wrangler, remove and inspect fuse No. 13. If fuse is blown, check for possible short to ground in Yellow/Dark Green wire between ignition switch and terminal No. 53 of CAB connector. If fuse is okay, go to next step.
  2. On all models, turn ignition off. Disconnect and inspect CAB 55-pin connector. Repair connector as necessary. Turn ignition on. With DRB-II in voltmeter mode, probe terminal No. 53 (Light Green/Yellow wire on Cherokee and Grand Cherokee and Grand Wagoneer or Yellow/Dark Green wire on Wrangler) of CAB connector.
  3. If voltage is less than 9 volts, repair open in Light Green/Yellow wire (Cherokee and Grand Cherokee and Grand Wagoneer) or Yellow/Dark Green wire (Wrangler). Perform VERIFICATION TEST VER-1A. If voltage is more than 9 volts, turn ignition off. With DRB-II in ohmmeter mode, probe terminal No. 1 (Black wire) of CAB connector. If resistance is more than 5 ohms, repair open Black wire. Perform VERIFICATION TEST VER-1A.
  4. If resistance is less than 5 ohms, probe terminal No. 19 (Black wire) of CAB connector. If resistance is more than 5 ohms, repair open Black wire. Perform VERIFICATION TEST VER-1A. If resistance is less than 5 ohms, check resistance of Violet/Brown wire (White/Violet wire on Wrangler) between terminals No. 4 of CCD bus diagnostic connector and No. 23 of CAB connector using an external ohmmeter.
  5. If resistance is more than 5 ohms, repair open in Violet/Brown wire (White/Violet wire on Wrangler). Perform VERIFICATION TEST VER-1A. If resistance is less than 5 ohms, using an external ohmmeter, check resistance of White/Black wire on Cherokee, White/Gray wire on Grand Cherokee and Grand Wagoneer or Orange wire on Wrangler between terminal No. 3 of CCD bus diagnostic connector and No. 42 of CAB connector.
  6. If resistance is more than 54 ohms, repair open in White/Black wire (Cherokee), White/Gray wire (Grand Cherokee and Grand Wagoneer) or Orange wire (Wrangler). Perform VERIFICATION TEST VER-1A. If resistance is less than 5 ohms, turn ignition off. Reconnect CAB 55-pin connector. Using DRB-II, try to access ABS TEVES diagnostics. If DRB-II does not display NO RESPONSE, system is functioning properly. If DRB-II displays NO RESPONSE, replace CAB. Perform VERIFICATION TEST VER-1A.
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