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No RSS Data, Loss Of Serial Communication Or Power

  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 RSS fuse (ignition fuse) in trunk compartment fuse block. If fuse is blown, go to step  12 . If fuse is okay, go to next step.
  3. Check 10-amp RSS fuse (battery fuse) in trunk compartment fuse block. If fuse is blown, go to step  13 . If fuse is okay, go to next step.
  4. Check for open in CVRSS control module ground circuit (Black wire). Repair as necessary. After repairs, perform CVRSS SYSTEM CHECK  . If circuit is okay, go to next step.
  5. Install fuses if removed. Turn ignition on, with engine off. Using DVOM, backprobe measuring voltage between battery positive voltage circuit (Orange wire) of CVRSS control module connector C2 and ground. See WIRING DIAGRAMS  . If voltage is more than 10 volts, go to step  7 . If voltage is less than 10 volts, go to next step.
  6. Repair open in battery positive voltage circuit (Orange wire).
  7. Using DVOM, measure voltage between ignition positive voltage circuit (Light Green wire) of CVRSS control module connector C2 and ground. See WIRING DIAGRAMS  . If voltage is more than 10 volts, go to step  9 . If voltage is less than 10 volts, go to next step.
  8. Repair open in ignition positive voltage circuit (Light Green wire). After repairs, perform CVRSS SYSTEM CHECK  .
  9. Check for open, short to ground or short to voltage in class 2 serial data line circuit (Purple wire). Repair as necessary. If circuit is okay, go to next step.
  10. Check for open, short to ground or short to voltage in other class 2 serial data line circuit (Purple wire). Repair as necessary. After repairs, perform CVRSS SYSTEM CHECK  . If circuit is okay, go to next step.
  11. If Code P1611 is set, go to step  16 . If Code P1611 is not set, go to appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT for diagnosis.
  12. Turn ignition off. Disconnect 32-pin CVRSS control module connector C1. Check continuity between ignition positive voltage circuit (Light Green wire) of CVRSS control module harness connector C2 and ground. See WIRING DIAGRAMS  . Repair as necessary. After repairs, go to step  15 . If circuit is okay, go to step  14 .
  13. Turn ignition off. Check continuity between battery positive voltage circuit (Orange wire) of CVRSS control module harness connector C2 and ground. See WIRING DIAGRAMS  . Repair as necessary. After repairs, go to step  15 . If circuit is okay, go to next step.
  14. Check for intermittent short to ground in affected circuit. After repairs, go to step  16 .
  15. Replace affected fuse. After repairs, perform CVRSS SYSTEM CHECK  .
  16. Check all electrical connections of affected circuit for proper seating and crimps. Reinstall/reconnect all components and connectors. Turn ignition on, with engine off. Clear codes. Display CVRSS codes. If IPC displays NO RSS DATA, go to next step. If IPC does not display NO RSS DATA, see NOTES ON INTERMITTENTS under DIAGNOSIS & TESTING.
  17. Turn ignition off. Replace CVRSS control module. Reinstall/reconnect all components and 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  .
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