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Home >> Cadillac >> 1997 >> Eldorado Base >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Suspension - Electronic CV Road Sensing >> Testing & Diagnosis >> Code C1785: ICCS2 DATALINK Right Output Short Circuit To Ground/Open Circuit

Code C1785: ICCS2 DATALINK Right Output Short Circuit To Ground/Open Circuit

  1. Perform CVRSS system check. See CVRSS SYSTEM CHECK  . After performing CVRSS system check, go to next step.
  2. Turn ignition off. Disconnect 32-pin CVRSS control module connector C3. Turn ignition on, with engine off. Using DVOM, measure voltage between ICCS2 data link output right circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See WIRING DIAGRAMS  . If voltage is more than 10 volts, go to step 8). If voltage is less than 10 volts, go to next step.
  3. Check continuity between ICCS2 data link output right circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See WIRING DIAGRAMS  . If a short to ground is present, go to step 5). If a short to ground is not present, go to next step.
  4. Disconnect Electronic Brake Traction Control Module (EBTCM) connector C2. Check continuity between ICCS2 data link output right circuit (Gray wire) of CVRSS control module harness connector C3 and ICCS2 data link input right circuit (Light Green wire) of EBTCM harness connector C2. See WIRING DIAGRAMS  . If continuity exists, go to step 10). If continuity does not exist, go to step 6).
  5. Disconnect Electronic Brake Traction Control Module (EBTCM) connector C2. Check continuity between ICCS2 data link output right circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See WIRING DIAGRAMS  . If continuity exists, go to step 7). If continuity does not exist, go to step 10).
  6. Repair open in ICCS2 data link output right circuit (Gray wire) or ICCS2 data link input right circuit (Light Green wire). After repairs, perform CVRSS SYSTEM CHECK  .
  7. Repair short to ground in ICCS2 data link output right circuit (Gray wire). After repairs, perform CVRSS SYSTEM CHECK  .
  8. Check appropriate terminal/connection for corrosion or improper seating. Repair as necessary. After repairs, perform CVRSS SYSTEM CHECK  . If terminal/connection is okay, go to next step.
  9. Turn ignition off. Replace CVRSS control module. Reinstall/reconnect all components/connectors. Install scan tool. Turn ignition on, with engine off. Calibrate NEW CVRSS control module. See CALIBRATING CVRSS CONTROL MODULE  under ADJUSTMENTS. Perform CVRSS SYSTEM CHECK  .
  10. Turn ignition off. Replace EBTCM. After repairs, perform CVRSS SYSTEM CHECK  .
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