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Home >> Cadillac >> 1998 >> Seville STS >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Suspension - Electronic CV Road-Sensing >> Diagnostic Tests >> Code C1736: ELC Compressor Relay Short To Ground Or Open Circuit

Code C1736: ELC Compressor Relay Short To Ground Or Open Circuit

  1. Perform CVRSS system check. See CVRSS SYSTEM CHECK  . After performing CVRSS system check, go to next step.
  2. Turn ignition off. Check 10-amp IGN-0 BODY fuse in trunk compartment fuse block. If fuse is blown, go to step  7 . If fuse is okay, go to next step.
  3. Disconnect 32-pin CVRSS control module connector C1. Turn ignition on, with engine off. Using DVOM, measure voltage at ELC compressor relay output circuit (Yellow wire) of CVRSS control module harness connector. 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.
  4. Turn ignition off. Check for open or short to ground in ELC compressor relay output circuit (Yellow wire). Repair as necessary. If circuit is okay, go to next step.
  5. Using DVOM, measure resistance between coil terminals of ELC compressor relay (component side). If resistance is 45-49 ohms, go to next step. If resistance is not 45-49 ohms, go to step  10 .
  6. Check for open in IGN-0 BODY fuse circuit (Light Green wire). Repair as necessary. If circuit is okay, go to step  8 .
  7. Check continuity between IGN-0 BODY fuse circuit (Light Green wire) of ELC compressor relay connector (socket of trunk compartment relay center) and ground. See WIRING DIAGRAMS  . Repair as necessary. After repairs, go to step  9 . If circuit is okay, go to next step.
  8. Check ELC compressor relay and connector (socket) for debris, corrosion, and/or intermittent opens. Check for intermittent short to ground in ELC compressor relay output circuit (Yellow wire). Reinstall/reconnect all components/connectors. Turn ignition on, with engine off. Clear CVRSS codes. Wait 60 seconds. Display CVRSS codes. If Code C1736 is set, go to step  11 . If Code C1736 is not set, see NOTES ON INTERMITTENTS  under DIAGNOSIS & TESTING.
  9. Replace 10-amp IGN-0 BODY fuse.
  10. Replace ELC compressor relay.
  11. 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.
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