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Suspension - Electronic Cv Road Sensing Cadillac DeVille Concours

Electronic Suspension 7 illustrations ~13149 words

DESCRIPTION & OPERATION

Continuously Variable Road-Sensing Suspension (CVRSS) system performs 3 functions

  1. Controls firmness of vehicle ride (this part of the system is called CVRSS, although the term CVRSS is also applied to the entire system.
  2. Adjusts vehicle riding height (this part of the system is called Electronic Level Control, or ELC).
  3. Increases steering effort as vehicle speed increases (this part of the system is called Magnetic Speed Variable Assist, or MSVA).

CVRSS control module monitors system for faults. If a fault occurs, codes are stored in memory. See SELF-DIAGNOSTICS . Self-diagnostics also allows technician to monitor CVRSS system data, inputs and outputs.

CONTINUOUSLY VARIABLE ROAD-SENSING SUSPENSION (CVRSS)

Continuously Variable Road-Sensing Suspension (CVRSS) system can change firmness of vehicle ride in 10 milliseconds. Vehicle ride firmness is determined by how easily the strut or shock absorber can be compressed (damping characteristics). In each strut and shock absorber, damper oil flows through a damper valve that has 2 different sized orifices, one for firm mode and the other for soft mode. A damper solenoid valve rotates the damper between positions (modes). Damper solenoid is an integral part of strut and is not serviceable separately from strut. Damper solenoids respond to command signals from CVRSS control module. CVRSS control module command signals are based on the following inputs.

CVRSS Position Sensors

These sensors (one mounted between body and each control arm) sense position of wheel in relation to body. CVRSS control module utilizes these inputs to control position of CVRSS damper solenoids. If body or wheel motions are detected, CVRSS control module will command damper solenoids to a soft or firm position.

CVRSS Damper Solenoid Valves

CVRSS shock absorbers/struts provide dampening by forcing fluid through internal orifices to resist suspension movement. Two levels of operation are achieved by redirecting oil flow using a solenoid valve. Soft mode is accomplished by switching solenoid on, causing oil to bypass main damper valving. Firm mode is accomplished by switching solenoid off, causing oil to flow through main damper valving.

Vehicle Speed Sensor Signal

Powertrain Control Module (PCM) transmits vehicle speed signal to CVRSS control module. CVRSS control module utilizes this signal to determine amount of damper control and steering assist.

Steering Wheel Position Sensor

Steering wheel position sensor sends steering wheel position data (angular) to CVRSS control module. Data is used to estimate vehicle lateral acceleration.

Lift/Dive Signal

Lift and dive occur when the vehicle accelerates and decelerates. When CVRSS control module receives an active lift/dive signal from PCM, all 4 damper solenoids are commanded to a firm position. PCM calculates lift signal based on inputs from throttle position, transmission gear and vehicle speed. Dive signal is based on rate of change of vehicle speed and brake switch status.

ELECTRONIC LEVEL CONTROL (ELC)

Note. Only electrical testing and diagnosis of ELC system is covered in this article. For trouble shooting, component removal and installation, and system testing, go to SUSPENSION - REAR ELECTRONIC LEVEL CONTROL article.

ELC system automatically raises and lowers vehicle to compensates for changes in riding height (trim height) that occur because of varying vehicle loads. To raise and lower vehicle, ELC system controls air pressure in adjustable rear shock absorbers. When riding height changes, a delay of about 7-27 seconds occurs before ELC system begins to operate.

Air pressure is supplied by a compressor that is powered by an electric motor. An exhaust solenoid on compressor vents system pressure when vehicle needs to be lowered. CVRSS control module controls the compressor and the exhaust solenoid based on inputs from position sensors. Position sensors sense position of wheel in relation to body.

MAGNETIC SPEED VARIABLE ASSIST (MSVA)

Magnetic Speed Variable Assist (MSVA) system, is a speed-dependent power steering system that provides power assist at varying levels based on need. A bi-directional magnetic rotary actuator in steering gear adjusts the amount of torque (driver effort) necessary to turn steering wheel. Magnasteer module varies torque by adjusting current flow through MSVA actuator. The amount of adjustment is relative to vehicle speed. Magnasteer module receives speed-related input signals from vehicle speed sensor. Lower vehicle speeds command a higher level of assist, which is attained by providing current to MSVA actuator in a negative direction. Higher vehicle speeds command a lower level of assist, which is attained by providing current to MSVA actuator in a positive direction.

ComponentLocation
CVRSS Control ModuleRight Front Corner Of Trunk
CVRSS Position SensorOn Control Arm Of Respective Wheel
Damper SolenoidIntegral Part Of Each Shock Absorber/Strut
Data Link Connector (DLC)Behind Left Side Of Dash
ELC CompressorOn Rear Suspension Support
ELC Exhaust SolenoidPart Of ELC Compressor
ELC RelayIn Trunk, In Micro Relay Center
MSVA ActuatorOn Power Steering Rack
Powertrain Control Module (PCM)Under Air Cleaner
Steering Wheel Position SensorAt Base Of Steering Column

ELECTRICAL COMPONENT LOCATIONS

POWER STEERING HYDRAULIC SYSTEM BLEEDING

Note. If air was introduced into power steering hydraulic system during servicing, bleed system. Aerated fluid, which appears Light Tan in color, results in poor steering performance and will cause pump damage.

  1. Turn ignition off. Raise and support front of vehicle with wheels off of ground. Turn wheels fully to left. Add fluid to bring level to FULL COLD mark on dipstick. DO NOT install reservoir cap. Turn wheels from left stop to right stop at least 20 times while an assistant monitors fluid level (add fluid as necessary to maintain level at FULL COLD mark). Ensure engine remains off.
  2. If reservoir overflows while turning wheel, air is trapped in system; check for leaks such as loose connections. If reservoir does not overflow, start engine. With engine idling, add fluid to bring level to FULL COLD mark. Install reservoir cap. Return wheels to center position.
  3. Lower vehicle. Continue to run engine for 2 minutes. Turn wheels from left stop to right stop. Check for leaks. Ensure fluid level is at FULL HOT mark when fluid is stabilized at operating temperature. Also, check for smooth power assist, noiseless operation and proper fluid condition (i.e. no bubbles, no foam, no discoloration).

POWER STEERING PUMP BELT

Note. See STEERING SYSTEM - POWER RACK & PINION article in STEERING section.

ELC TRIM HEIGHT

Note. This procedure requires a Tech 1 scan tool. DO NOT sit in vehicle during adjustment.

  1. Connect Tech 1 scan tool to Data Link Connector (DLC) located under left side of instrument panel. Park vehicle on level surface. Close doors. Ensure vehicle is unloaded. If any codes related to rear position sensors or dampers are set, repair cause of codes before continuing. Enter diagnostics. See «USING SELF-DIAGNOSTICS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__using-self-diagnostics) under «SELF-DIAGNOSTICS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) .
  2. Turn ignition on, with engine off. Using scan tool, monitor RSS DATA RS D13 and RS D14. If voltages are not within normal range, check for bent or disconnected rear position sensors and repair as necessary. To adjust ELC trim height, follow instructions on Tech 1 scan tool.

STEERING AUTOCENTER

Note. This procedure requires a Tech 1 scan tool.

  1. Connect Tech 1 scan tool to Data Link Connector (DLC) located under left side of instrument panel. Enter diagnostics. See «USING SELF-DIAGNOSTICS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__using-self-diagnostics) under SELF-DIAGNOSTICS. Check for CVRSS steering sensor Code RS0080. If code is set, diagnose and repair before continuing. Ensure wheels are in straight-ahead position and steering wheel is centered.
  2. Turn ignition on, engine off. Using scan tool, monitor RSS DATA RS D15. If voltage is not 2-3 volts, realign steering sensor. To adjust steering autocenter, follow instructions on Tech 1 scan tool.

CALIBRATING CVRSS CONTROL MODULE

Note. To ensure NEW CVRSS control module is calibrated for specific vehicle, Code RS0051 is stored in memory. After replacing CVRSS control module, it must be calibrated. If NEW CVRSS control module is not calibrated, code cannot be cleared.

Ensure Tech 1 scan tool is equipped with latest version of chassis application program. Turn ignition off. Connect Tech 1 scan tool to Data Link Connector (DLC). Turn ignition on, engine off. To calibrate CVRSS control module, follow instructions on Tech 1 scan tool. Perform ELC trim height and steering autocenter adjustments. See ELC TRIM HEIGHT and STEERING AUTOCENTER under ADJUSTMENTS.

USING SELF-DIAGNOSTICS

Note. Checking system in self-diagnostics mode for more than 30 minutes with engine not running will discharge battery, possibly resulting in false diagnostic information being related or causing a no-start condition. If necessary, connect battery charger (turn ignition off before connecting).

Note. To exit diagnostics at any time, press RESET button on A/C-heater control panel, or turn ignition off.

Entering Diagnostics

Turn ignition on. Simultaneously push OFF and WARMER buttons on A/C-heater control panel.

Segment Check

A segment check of all LEDs on the Instrument Panel Cluster (IPC) should begin. During this check, all segments except the turn signal indicators should illuminate. If all segments do not illuminate, repair or replace IPC. After segment check, diagnostic code display will automatically begin. (Scheme 9)

Diagnostic Code Display

  1. System will begin displaying codes (if any are stored). (Scheme 10) The first character of code is a letter that indicates which system code applies to. See «SYSTEM LETTER CODE INTERPRETATION»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) table.
  2. The fifth character of code is the letter "C" or "H". "C" stands for current code. Current means the fault currently exists (like a hard code), and fault was present the last time the diagnostic test was run. "H" stands for history code. History means fault does not currently exist, but existed before (like an intermittent code), and was not present the last time the diagnostic test was run.
  3. If no codes are present for a system, a NO XXX CODES message will be displayed (with X being the system displayed). If the communication line for a system is not operating, a NO XXX DATA message will be displayed, indicating that the IPC could not communicate with that system.
LetterSystem (Or Component)
PPowertrain Control Module
IPInstrument Panel Cluster
BAir Conditioning Programmer
SDSupplemental Inflatable Restraint
CTraction Control System
RSRoad-Sensing Suspension

SYSTEM LETTER CODE INTERPRETATION

Select System Mode

After trouble codes have been displayed, PCM? will be displayed. (At this point, to return to diagnostic code display, press OFF button, otherwise, continue procedure.) Cycle through systems by pressing LO button until desired system is displayed, and then press HI button. (Scheme 9)

Select Test Type Mode

RSS DATA will be displayed. (At this point, to return to SELECT SYSTEM MODE, press OFF button, otherwise, continue procedure.) Press LO button to cycle through tests until desired test is displayed. To enter desired test, press HI button. (Scheme 9)

Select Test Mode

Press HI button to advance to next test or LO button to return to previous test. (At this point, to return to SELECT TEST TYPE MODE, press OFF button, otherwise, continue procedure.) A description of available tests follows. (Scheme 10)

  1. RSS Data - Actual analog values (as seen/used by the system) are displayed.
  2. RSS Inputs - Displays state of lift/dive signal. HI state indicates PCM is not grounding the signal circuit (vehicle is NOT lifting or diving). LO signal indicates PCM is grounding the signal circuit (vehicle is lifting or diving).
  3. RSS Outputs (Output Cycling) - Output cycling can be used to determine if the output tests can be actuated regardless of the inputs and normal program instructions. After selecting an output test, HI and LO will be displayed for 3 seconds in each state to indicate command and output terminal voltage.
  4. RSS Clear Codes - To clear codes, press HI button. RSS CODES CLEAR message will be displayed for 3 seconds, and then system will automatically return to SELECT TEST TYPE MODE.

Exiting Diagnostics

Press RESET button on A/C-heater control panel, or turn ignition off. This will NOT cause codes to be erased.

Scheme 9

Scheme 9: Exiting Diagnostics
Scheme 9: Exiting Diagnostics

Scheme 10

Scheme 10
Scheme 10

NOTES ON INTERMITTENTS

Because CVRSS control module performs a test for different failures under different driving conditions, it is often necessary to test drive vehicle to cause the failure to occur again and allow a code to set. If failure does not occur again during test drive, a good description of vehicle behavior may be helpful in determining which component or circuit is faulty.

Most intermittent problems are caused by faulty electrical connections or wiring. Check for the following conditions

  1. Poor mating of connector halves.
  2. Terminals not fully seated in connector body.
  3. Improperly formed or damaged terminals (carefully reform all connector terminals in a problem circuit to increase contact tension).
  4. Poor terminal-to-wire connection (requires removing terminal from connector body to inspect).

Most of the time, if CVRSS system detects a fault but the fault clears before the ignition is turned off, CVRSS function will not be disabled. Some failures will disable CVRSS function for the entire ignition cycle, even if the fault clears before the ignition is turned off.

When a fault occurs, SERVICE RIDE CONTROL message should come on and remain on until the ignition is turned off and then on again. The following conditions may cause SERVICE RIDE CONTROL message to be displayed intermittently

  1. An interruption of power to CVRSS control module (check wiring and fuses).
  2. Incorrect voltage of power supply circuits (battery or ignition) to CVRSS control module. Voltage must be more than 10.3 volts or less than 16.0 volts. This condition prevents CVRSS control module from logging codes and displaying SERVICE RIDE CONTROL message. If this condition occurs while driving, system will not operate normally. When normal voltage is restored, system will operate normally (check charging system).

TESTING & DIAGNOSIS

Note. For terminal and circuit identification, see WIRING DIAGRAMS. For identification of CVRSS control module connector terminals (Scheme 11)through (Scheme 15).

Scheme 11

Scheme 11: TESTING & DIAGNOSIS
Scheme 11: TESTING & DIAGNOSIS

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13

CVRSS SYSTEM CHECK

  1. Turn ignition on. Note all messages on instrument panel cluster. Enter diagnostics. See «USING SELF-DIAGNOSTICS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__using-self-diagnostics) under SELF-DIAGNOSTICS. If diagnostics can be entered, go to next step. If diagnostics cannot be entered, problem exists in instrument panel cluster. See «INSTRUMENT PANEL»(ref-31876) article in ACCESSORIES & EQUIPMENT section.
  2. Record codes (if present). If no codes are present, go to next step. If codes are present, go to appropriate code for diagnosis.
  3. If SERVICE RIDE CONTROL message is displayed, go to «NO RSS DATA, LOSS OF SERIAL COMMUNICATION»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__no-rss-data-loss-of-serial) . If SERVICE RIDE CONTROL message is not displayed, problem is no longer present. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.

NO RSS DATA, LOSS OF SERIAL COMMUNICATION

  1. Turn ignition on, with engine off. Using DVOM, backprobe battery positive voltage circuit terminal (Orange wire) of CVRSS control module connector C3 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, go to step 4).
  2. Check 20-amp RTD fuse in trunk compartment fuse block. If fuse is okay, repair open in Orange wire. If fuse is blown, go to next step.
  3. Check continuity of battery positive voltage circuit (Orange wire) at CVRSS control module harness connector C3 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, repair short to ground in Orange wire and replace fuse. If continuity does not exist, check other related systems for cause of blown fuse and replace fuse.
  4. Using DVOM, measure voltage between ignition circuit terminal (Light Blue wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, go to step 7).
  5. Check 10-amp RTD fuse in trunk compartment fuse block. If fuse is okay, repair open in Light Blue wire. If fuse is blown, go to next step.
  6. Turn ignition on, with engine off. Disconnect 24-pin CVRSS control module connector C2. Check continuity of ignition circuit (Light Blue wire) at CVRSS control module harness connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, repair short to ground in Light Blue wire and replace fuse. If continuity does not exist, check for intermittent short to ground in Light Blue wire and replace fuse.
  7. Turn ignition off. Check continuity of control module ground circuit (Black wire) at CVRSS control module harness connector C3 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in Black wire.
  8. Check if Code PZ2056 is set. If Code PZ2056 is set, go to next step. If Code PZ2056 is not set, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  9. Check continuity of data input circuit (Tan wire) at CVRSS control module harness connector C1 to EBTCM harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity of data input circuit (Tan wire) at CVRSS control module harness connector C1 to Body Control Module (PZM) harness connector. If continuity exists on both circuits, go to next step. If continuity does not exist on either circuit, repair open in affected Tan wire.
  10. Disconnect Electronic Brake Traction Control Module (EBTCM) connector. If NO RSS DATA fault is still present, go to next step. If NO RSS DATA fault is no longer present, diagnose anti-lock brake/traction control system. See «ANTI-LOCK BRAKE SYSTEM»(/cadillac/deville-concours/1994-1998/remont/anti-locktraction-control/#anti-lock-brake-system) article in BRAKES section.
  11. Reconnect EBTCM connector. Disconnect Sensing and Diagnostic Module (SDM) connectors. If NO RSS DATA fault is still present, go to next step. If NO RSS DATA fault is no longer present, diagnose air bag restraint system. See «AIR BAG RESTRAINT SYSTEM»(/cadillac/deville-concours/1994-1998/remont/airbag/#supplemental-inflatable-restraint-system) article in ACCESSORIES & EQUIPMENT section.
  12. If any other body control module loss of communication codes are present, go to «BODY CONTROL MODULE»(ref-31875) article in ACCESSORIES & EQUIPMENT section. If no other body control module loss of communication codes are present, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0010, 0015, 0020 & 0025: DAMPER SOLENOID VALVE OVER-CURRENT

  1. CODE RS0010 Left Front Damper Solenoid Valve Over-Current
  2. CODE RS0015 Right Front Damper Solenoid Valve Over-Current
  3. CODE RS0020 Left Rear Damper Solenoid Valve Over-Current
  4. CODE RS0025 Right Rear Damper Solenoid Valve Over-Current
  1. Clear codes. Wait 90 seconds. Display codes. If Code RS0010, RS0015, RS0020 or RS0025 is set, go to next step. If Code RS0010, RS0015, RS0020 or RS0025 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Disconnect 8-pin CVRSS control module connector C3 (32-pin CVRSS control module connector C1 on left rear; 24-pin CVRSS control module connector C2 on right rear). Using DVOM, measure resistance between solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) and solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) of CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than 9.5 ohms, go to step 15). If resistance is more than 9.5 ohms, go to next step.
  3. Turn ignition on. Using DVOM, measure voltage between solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) of CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to step 8). If battery voltage is present, go to next step.
  4. Turn ignition off. Disconnect damper solenoid connector. Turn ignition on. Using DVOM, measure voltage between solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) of damper solenoid harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, repair short to voltage in Light Blue wire or Dark Blue wire.
  5. Using DVOM, measure voltage between solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) of damper solenoid connector (component side) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, go to step 7).
  6. Check damper solenoid connector for debris or corrosion. Check for intermittent short to voltage in Light Blue wire or Dark Blue wire.
  7. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Wait 90 seconds. Display codes to confirm repair.
  8. Using DVOM, measure voltage between solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) of CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If battery voltage is present, go to step 11). If voltage is not present, go to next step.
  9. Turn ignition off. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Clear codes. Wait 90 seconds. Display codes. If RS0010, RS0015, RS0020 or RS0025 is set, go to next step. If Code RS0010, RS0015, RS0020 or RS0025 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  10. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  11. Turn ignition off. Disconnect damper solenoid connector. Turn ignition on. Using DVOM, measure voltage between solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) of damper solenoid harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, repair short to voltage in Gray wire or Dark Green wire.
  12. Using DVOM, measure voltage between solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) of damper solenoid connector (component side) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, go to step 14).
  13. Check damper solenoid connector for debris or corrosion. Check for intermittent short to voltage in Gray wire or Dark Green wire.
  14. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Wait 90 seconds. Display codes to confirm repair.
  15. Disconnect damper solenoid connector. Using DVOM, measure resistance between terminals of damper solenoid connector (component side). If resistance is more than 9.5 ohms, go to step 17). If resistance is less than 9.5 ohms, go to next step.
  16. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Wait 90 seconds. Display codes to confirm repair.
  17. Using DVOM, measure resistance between terminals of damper solenoid harness connector. If resistance is more than 50 ohms, go to next step. If resistance is less than 50 ohms, repair short between Light Blue wire or Dark Blue wire, and Gray wire or Dark Green wire.
  18. Check CVRSS control module connector or damper solenoid connector for debris or corrosion. Check for intermittent short between Light Blue wire or Dark Blue wire, and Gray wire or Dark Green wire.

CODE RS0011, 0016, 0021 & 0026: DAMPER SOLENOID VALVE UNDER-CURRENT

  1. CODE RS0011 Left Front Damper Solenoid Valve Under-Current
  2. CODE RS0016 Right Front Damper Solenoid Valve Under-Current
  3. CODE RS0021 Left Rear Damper Solenoid Valve Under-Current
  4. CODE RS0026 Right Rear Damper Solenoid Valve Under-Current
  1. Clear codes. Wait 90 seconds. Display codes. If Code RS0011, RS0016, RS0021 or RS0026 is set, go to next step. If Code RS0011, RS0016, RS0021 or RS0026 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Disconnect 8-pin CVRSS control module connector C3 (32-pin CVRSS control module connector C1 on left rear; 24-pin CVRSS control module connector C2 on right rear). Using DVOM, measure resistance between solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) and solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) of CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than 9.5 ohms, go to next step. If resistance is 9.5-15.5 ohms, go to step 6). If resistance is more than 15.5 ohms, go to step 13).
  3. Disconnect damper solenoid connector. Using DVOM, measure resistance between terminals of damper solenoid harness connector. If resistance is more than 9.5 ohms, go to step 5). If resistance is less than 9.5 ohms, go to next step.
  4. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Display codes. If Code RS0011, RS0016, RS0021 or RS0026 is set, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  5. Repair short between Light Blue wire or Dark Blue wire, and Gray wire or Dark Green wire. Reinstall/reconnect all components/connectors. Clear codes. Display codes. If Code RS0011, RS0016, RS0021 or RS0026 is set, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  6. Check continuity of solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) at CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity of solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) at CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) to ground. If continuity exists on either circuit, go to step 9). If continuity does not exist on both circuits, go to next step.
  7. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Clear codes. Wait 2 minutes. Display codes. If Code RS0011, RS0016, RS0021 or RS0026 is set, go to next step. If Code RS0011, RS0016, RS0021 or RS0026 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  8. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  9. Disconnect damper solenoid connector. Check continuity of solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) at damper solenoid harness connector to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity of solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) at damper solenoid harness connector to ground. If continuity exists on either circuit, repair short to ground in affected circuit. If continuity does not exist on both circuits, go to next step.
  10. Check continuity of solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) at damper solenoid connector (component side) to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity of solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) at damper solenoid connector (component side) to ground. If continuity exists on either circuit, go to step 12). If continuity does not exist on both circuits, go to next step.
  11. Check damper solenoid connector for debris or corrosion. Check for intermittent short to ground in Light Blue wire or Dark Blue wire, and Gray wire or Dark Green wire.
  12. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Wait 90 seconds. Display codes to confirm repair.
  13. Disconnect damper solenoid connector. Using DVOM, measure resistance between terminals of damper solenoid connector (component side). If resistance is more than 15.5 ohms, go to next step. If resistance is less than 15.5 ohms, go to step 15).
  14. Replace damper solenoid. Reinstall/reconnect all components/connectors. Clear codes. Wait 90 seconds. Display codes to confirm repair.
  15. Check continuity of solenoid control circuit terminal (Light Blue wire on front; Dark Blue wire on rear) between CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and damper solenoid harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in Light Blue wire or Dark Blue wire.
  16. Check continuity of solenoid ground circuit terminal (Gray wire on front; Dark Green wire on rear) between CVRSS control module harness connector C3 (C1 on left rear; C2 on right rear) and damper solenoid harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in Gray wire or Dark Green wire.
  17. Check CVRSS control module connector and damper solenoid connector for debris or corrosion. Check for intermittent open in Light Blue wire or Dark Blue wire, and Gray wire or Dark Green wire.

CODE RS0030: MAGNETIC SPEED VARIABLE ASSIST ACTUATOR SHORT TO VOLTAGE

  1. Clear codes. Start engine. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 2 minutes. Display codes. If Code RS0030 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0030 is set, go to next step.
  2. Turn ignition off. Disconnect 8-pin CVRSS control module connector C3. Turn ignition on. Using DVOM, measure voltage between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to step 6). If voltage is present, go to next step.
  3. Turn ignition off. Disconnect MSVA actuator connector. Turn ignition on. Using DVOM, measure voltage between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If voltage is present, repair short to voltage in Gray wire.
  4. Using DVOM, measure voltage between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If voltage is present, repair short to voltage in White wire.
  5. Check CVRSS control module connector and MSVA actuator connector for debris or corrosion. Check for intermittent short to voltage in Gray wire and White wire.
  6. Turn ignition off. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. If Code RS0030 is not set, check for intermittent short to voltage in Gray wire and White wire. If Code RS0030 is set, go to next step.
  7. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0031: MAGNETIC SPEED VARIABLE ASSIST ACTUATOR SHORT TO GROUND

  1. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. Display codes. If Code RS0031 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0031 is set, go to next step.
  2. Turn ignition off. Disconnect 8-pin CVRSS control module connector C3. Check continuity of actuator high circuit (Gray wire) at CVRSS control module harness connector C3 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity of actuator low circuit (White wire) at CVRSS control module harness connector C3 to ground. If continuity exists on either circuit, go to step 5). If continuity does not exist on both circuits, go to next step.
  3. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. If Code RS0031 is not set, check for intermittent short to ground in Gray wire and White wire. If Code RS0031 is set, go to next step.
  4. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  5. Disconnect MSVA actuator connector. Check continuity between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in Gray wire.
  6. Check continuity between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in White wire.
  7. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Check continuity between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. If continuity exists on either circuit, replace MSVA actuator. If continuity does not exist on both circuits, go to next step.
  8. Check CVRSS control module connector for debris or corrosion. Check for intermittent short to ground in Gray wire and White wire.

CODE RS0032: MAGNETIC SPEED VARIABLE ASSIST ACTUATOR SHORT ACROSS LOAD

  1. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. Display codes. If Code RS0032 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0032 is set, go to next step.
  2. Turn ignition off. Disconnect 8-pin CVRSS control module connector C3. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than one ohm, go to step 5). If resistance is more than one ohm, go to next step.
  3. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. Display codes. If Code RS0032 is not set, check for intermittent shorts between Gray wire and White wire. If Code RS0032 is set, go to next step.
  4. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  5. Disconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than 10 ohms, repair short between Gray wire and White wire. If resistance is more than 10 ohms, go to next step.
  6. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than one ohm, replace MSVA actuator. If resistance is more than one ohm, check for intermittent short between Gray wire and White wire.

CODE RS0033: MAGNETIC SPEED VARIABLE ASSIST ACTUATOR OUTPUT CURRENT FAULT

  1. Clear codes. Start engine. Wait 60 seconds. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. Display codes. If Code RS0030, RS0031, RS0032 or RS0034 is not set, go to next step. If Code RS0030, RS0031, RS0032 or RS0034 is set, go to Code RS0030, RS0031, RS0032 or RS0034 for diagnosis.
  2. If Code RS0033 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0033 is set, go to next step.
  3. Disconnect 8-pin CVRSS control module connector C3. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than one ohm, go to step 19). If resistance is more than one ohm and less than 6 ohms, go to step 8). If resistance is more than 6 ohms, go to next step.
  4. Disconnect MSVA actuator connector. Check continuity of actuator high circuit (Gray wire) between CVRSS control module harness connector C3 and MSVA actuator harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, repair open in Gray wire. If continuity exists, go to next step.
  5. Check continuity of actuator low circuit (White wire) between CVRSS control module harness connector C3 and MSVA actuator harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, repair open in White wire. If continuity exists, go to next step.
  6. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is less than 6 ohms, go to next step. If resistance is more than 6 ohms, replace MSVA actuator.
  7. Check CVRSS control module connector for debris or corrosion. Check for intermittent open in Gray wire and White wire.
  8. Check continuity between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. If continuity exists on either circuit, go to step 15). If continuity does not exist on both circuits, go to next step.
  9. Turn ignition on. Using DVOM, measure voltage between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to step 13). If battery voltage is present, go to next step.
  10. Turn ignition off. Disconnect MSVA actuator connector. Turn ignition on. Using DVOM, measure voltage between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, repair short to voltage in Gray wire.
  11. Using DVOM, measure voltage between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If battery voltage is present, repair short to voltage in White wire.
  12. Check CVRSS control module connector and MSVA actuator connector for debris or corrosion. Check for intermittent short to voltage in Gray wire and White wire.
  13. Turn ignition off. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. lear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. If Code RS0033 is not set, check for intermittent short to voltage, short to ground or open in Gray wire and White wire. If Code RS0033 is set, go to next step.
  14. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  15. Disconnect MSVA actuator connector. Check continuity between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, repair short to ground in Gray wire. If continuity does not exist, go to next step.
  16. Check continuity between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, repair short to ground in White wire. If continuity does not exist, go to next step.
  17. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Check continuity between actuator high circuit (Gray wire) of CVRSS control module harness connector C3 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between actuator low circuit (White wire) of CVRSS control module harness connector C3 and ground. If continuity exists on either circuit, replace MSVA actuator. If continuity does not exist on both circuits, go to next step.
  18. Check CVRSS control module connector for debris or corrosion. Check for intermittent short to ground in Gray wire and White wire.
  19. Disconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than 10 ohms, go to next step. If resistance is less than 10 ohms, repair short between Gray wire and White wire.
  20. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than one ohm, check for intermittent short between Gray wire and White wire. If resistance is less than one ohm, replace MSVA actuator.

CODE RS0034: MAGNETIC SPEED VARIABLE ASSIST ACTUATOR OPEN CIRCUIT

  1. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. Display codes. If Code RS0034 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0034 is set, go to next step.
  2. Turn ignition off. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than 6 ohms, go to step 5). If resistance is less than 6 ohms, go to next step.
  3. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Clear codes. Using scan tool, select RSS OUTPUTS, and then RS 005 (STRG SOL). Cycle MSVA actuator. Wait 60 seconds. If Code RS0034 is not set, check for intermittent open in Gray wire and White wire. If Code RS0034 is set, go to next step.
  4. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  5. Disconnect MSVA actuator connector. Check continuity of actuator high circuit (Gray wire) between of CVRSS control module harness connector C3 and MSVA actuator harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in Gray wire.
  6. Check continuity of actuator low circuit (White wire) between of CVRSS control module harness connector C3 and MSVA actuator harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in White wire.
  7. Check MSVA actuator connector for debris or corrosion. Reconnect MSVA actuator connector. Using DVOM, measure resistance between actuator high circuit (Gray wire) and actuator low circuit (White wire) of CVRSS control module harness connector C3. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than 6 ohms, replace MSVA actuator. If resistance is less than 6 ohms, go to next step.
  8. Check CVRSS control module connector for debris or corrosion. Check for intermittent open in Gray wire and White wire.

CODE RS0035: ELC COMPRESSOR RELAY SHORT TO VOLTAGE

  1. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0035 is set, go to next step. If Code RS0035 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Remove ELC compressor relay. Disconnect 24-pin CVRSS control module connector C2. Turn ignition on. Using DVOM, measure voltage between ELC compressor relay control circuit terminal (Yellow wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If voltage is present, repair short to voltage in Yellow wire.
  3. Turn ignition off. Using DVOM, measure resistance between terminals A3 (Light Green wire) and B1 (Yellow wire) of ELC compressor relay (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than 47 ohms, go to next step. If resistance is less than 47 ohms, replace ELC compressor relay.
  4. Check CVRSS control module connector, and ELC compressor relay and connector for debris or corrosion. Install ELC compressor relay. Reconnect CVRSS control module connector. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0035 is set, go to next step. If Code RS0035 is not set, check for intermittent short to voltage in Yellow wire.
  5. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0036: ELC COMPRESSOR RELAY SHORT TO GROUND/OPEN CIRCUIT

  1. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0036 is set, go to next step. If Code RS0036 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Check 10-amp IGN-0 BODY fuse in trunk compartment fuse block. If fuse is okay, go to step 5). If fuse is blown, go to next step.
  3. Remove fuse. Remove ELC compressor relay. Check continuity between 10-amp IGN-0 BODY fuse terminal (Light Green wire) of trunk compartment fuse block and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in Light Green wire. Replace fuse.
  4. Using DVOM, measure resistance between terminals A3 (Light Green wire) and B1 (Yellow wire) of ELC compressor relay (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is more than 47 ohms, problem no longer exists. Replace fuse. If resistance is less than 47 ohms, replace ELC compressor relay and fuse.
  5. Turn ignition on. Using DVOM, measure voltage at 10-amp IGN-0 BODY fuse terminal (Light Green wire) of trunk compartment fuse block. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, repair open in fuse power supply circuit (Light Blue wire) between ignition switch and trunk compartment fuse block. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) .
  6. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Turn ignition on. Using DVOM, backprobe measuring voltage at terminal A3 (Light Green wire) of ELC compressor relay harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, repair open in Light Green wire.
  7. Using DVOM, backprobe measuring voltage at terminal B1 (Yellow wire) of ELC compressor relay harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to step 9). If voltage is not present, go to next step.
  8. Turn ignition off. Remove ELC compressor relay. Check continuity between terminal B1 (Yellow wire) of ELC compressor relay harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, repair short to ground in Yellow wire. If continuity does not exist, replace ELC compressor relay.
  9. Using DVOM, measure voltage between ELC compressor relay control circuit terminal (Yellow wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, repair open in Yellow wire.
  10. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0036 is set, go to next step. If Code RS0036 is not set, check for intermittent open in Light Green wire, Yellow wire, and in fuse power supply circuit (Light Blue wire) between ignition switch and trunk compartment fuse block. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) .
  11. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0037: ELC EXHAUST SOLENOID SHORT TO VOLTAGE

  1. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0037 is set, go to next step. If Code RS0037 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Disconnect ELC compressor assembly connector. Turn ignition on. Using DVOM, measure voltage between exhaust solenoid control circuit terminal (White wire) of ELC compressor assembly harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If voltage is present, repair short to voltage in White wire. Reconnect ELC compressor assembly connector.
  3. Using DVOM, measure voltage between exhaust solenoid control circuit terminal (White wire) of ELC compressor assembly connector (component side) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is not present, go to next step. If voltage is present, replace ELC compressor assembly and all related air lines.
  4. Using DVOM, measure resistance between exhaust solenoid control circuit terminal (White wire) and exhaust solenoid power supply circuit terminal (Orange wire) of ELC compressor assembly connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is 25-35 ohms, go to next step. If resistance is less than 25 ohms or more than 35 ohms, replace ELC compressor assembly and all related air lines.
  5. Check ELC compressor assembly connector and CVRSS control module connector for debris or corrosion. Reconnect ELC compressor assembly connector and CVRSS control module connector. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0037 is set, go to next step. If Code RS0037 is not set, check for intermittent short to voltage in White wire.
  6. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0038: ELC EXHAUST SOLENOID SHORT TO GROUND/OPEN CIRCUIT

  1. Clear codes. Wait 90 seconds (no vehicle speed). Display codes. If Code RS0038 is set, go to next step. If Code RS0038 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition off. Remove and check 30-amp ELC fuse in trunk compartment fuse block. Fuse is hot at all times. If fuse is blown, go to next step. If fuse is okay, go to step 7).
  3. Disconnect ELC compressor assembly connector. Check continuity between exhaust solenoid power supply circuit terminal (Orange wire) of ELC compressor assembly harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in Orange wire. Replace 30-amp ELC fuse. Reconnect ELC compressor assembly connector.
  4. Check continuity between exhaust solenoid control circuit terminal (White wire) of ELC compressor assembly harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in White wire. Replace 30-amp ELC fuse. Reconnect ELC compressor assembly connector.
  5. Check continuity between the following terminals of ELC compressor assembly connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Exhaust solenoid control circuit (White wire) and ground. Exhaust solenoid control circuit (White wire) and ground circuit (Black wire). Exhaust solenoid power supply circuit (Orange wire) and ground. Exhaust solenoid power supply circuit (Orange wire) and ground circuit (Black wire). If continuity does not exist on all terminals, go to next step. If continuity exists on any terminal, replace ELC compressor assembly and all related air lines. Replace 30-amp ELC fuse.
  6. Check ELC compressor assembly connector for debris or corrosion. Reconnect ELC compressor assembly connector. Check for low battery voltage. Replace 30-amp ELC fuse. Clear codes. Wait 90 seconds (no vehicle speed). Remove and check 30-amp ELC fuse in trunk compartment fuse block. If fuse is okay, problem no longer exists. If fuse is blown, replace ELC compressor assembly and all related air lines. Replace 30-amp ELC fuse.
  7. Using DVOM, measure voltage between 30-amp ELC fuse terminal (Red wire) of trunk compartment fuse block and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, check 60-amp BODY 2 fuse in left maxifuse block located in front of left strut tower, in engine compartment.
  8. Reinstall 30-amp ELC fuse. Disconnect 24-pin CVRSS control module connector C2. Disconnect ELC compressor assembly connector. Using DVOM, measure voltage between exhaust solenoid power supply circuit terminal (Orange wire) of ELC compressor assembly harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, repair open in Orange wire.
  9. Using DVOM, measure resistance between exhaust solenoid control circuit terminal (White wire) and exhaust solenoid power supply circuit terminal (Orange wire) of ELC compressor assembly connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is 25-35 ohms, go to next step. If resistance is less than 25 ohms or more than 35 ohms, replace ELC compressor assembly and all related air lines.
  10. Check continuity between exhaust solenoid control circuit terminal (White wire) and ground circuit terminal (Black wire) of ELC compressor assembly connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, replace ELC compressor assembly and all related air lines.
  11. Check continuity between exhaust solenoid control circuit terminal (White wire) of ELC compressor assembly harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in White wire. Reconnect ELC compressor assembly connector.
  12. Check ELC compressor assembly connector for debris or corrosion. Reconnect ELC compressor assembly connector. Using DVOM, measure voltage between exhaust solenoid control circuit terminal (White wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is present, go to next step. If voltage is not present, repair open in White wire.
  13. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Clear codes. Wait 90 seconds (no vehicle speed). If Code RS0038 is set, go to next step. If Code RS0038 is not set, check for intermittent open or short to ground in White wire and Orange wire.
  14. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0043: SPEED SIGNAL FAULT

  1. Clear codes. Drive vehicle faster than 20 MPH for more than 10 seconds. Display codes. If Code RS0043 is set, go to next step. If Code RS0043 is not set, check vehicle speed input circuit (Dark Green/White wire) for intermittent faults.
  2. If Code P1642 is set, go to Code P1642 for diagnosis. See «TESTS W/CODES»(/cadillac/deville-concours/1994-1998/remont/testing-diagnostics/#engine-control-system-tests-wcodes) article in ENGINE PERFORMANCE section. If Code P1642 is not set, go to next step.
  3. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Disconnect 23-pin splice C205 connector located behind right side of instrument panel, near kick panel. Check continuity between vehicle speed input circuit terminal (Dark Green/White wire) of splice C205 connector (PCM side) and CVRSS control module harness connector C2. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to step 5). If continuity does not exist, go to next step.
  4. Repair open in Dark Green/White wire. Reinstall/reconnect all components/connectors.
  5. Check CVRSS control module connector for corrosion or loose connections. Reinstall/reconnect all components/connectors. Clear codes. Drive vehicle faster than 20 MPH for more than 10 seconds. Display codes. If Code RS0043 is set, go to next step. If Code RS0043 is not set, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  6. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0044: LIFT/DIVE SIGNAL FAULT

  1. Clear codes. Exit on-board diagnostics mode. Wait 35 seconds (test duration is 31 seconds). If Code RS0044 is set, go to step 3). If Code RS0044 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Using scan tool, store fluid life. Turn ignition off. Wait 30 seconds. Disconnect PCM connector C1. Turn ignition on. Using DVOM, measure voltage between lift/dive signal output circuit terminal (Purple wire) of PCM harness connector C1 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4 volts, go to step 6). If voltage is more than 4 volts, go to next step.
  3. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Turn ignition on. Using DVOM, measure voltage between lift/dive signal input circuit terminal (Purple wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4 volts, go to next step. If voltage is more than 4 volts, repair short to voltage in Purple wire.
  4. Turn ignition off. Reconnect CVRSS control module connector and PCM connector. Turn ignition on. Using DVOM, backprobe measuring voltage of lift/dive signal input circuit (Purple wire) at CVRSS control module connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Turn ignition on. Wait 15 seconds. Quickly depress accelerator pedal while monitoring voltage. If voltage toggles 0-5 volts, go to next step. If voltage does not toggle and remains 0-5 volts, replace PCM. See «TESTS W/CODES»(/cadillac/deville-concours/1994-1998/remont/testing-diagnostics/#engine-control-system-tests-wcodes) article in ENGINE PERFORMANCE section.
  5. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  6. Using DVOM, backprobe measuring voltage of lift/dive signal input circuit (Purple wire) at CVRSS control module connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4 volts, go to next step. If voltage is more than 4 volts, repair open in Purple wire.
  7. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Check continuity between lift/dive signal input circuit terminal (Purple wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, repair short to ground in Purple wire.
  8. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Using DVOM, backprobe measuring voltage of lift/dive signal input circuit (Purple wire) at CVRSS control module connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4 volts, go to next step. If voltage is more than 4 volts, check for intermittent open and short to ground in Purple wire.
  9. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0050: CVRSS CONTROL MODULE FAULT

  1. If Code RS0050 is set as history, go to next step. If Code RS0050 is set as current, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  2. Clear codes. Wait 30 seconds. Display codes. If Code RS0050 is set, go to step 4). If Code RS0050 is not set, go to next step.
  3. If vehicle has previously be serviced for Code RS0050, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS. If vehicle has not previously be serviced for Code RS0050, problem no longer exists. No repair is necessary.
  4. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0051: CVRSS CONTROL MODULE CALIBRATION FAULT

  1. Turn ignition on. Using scan tool, calibrate CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS. Clear codes. Wait 30 seconds. Display codes. If Code RS0051 is set, go to step 3). If Code RS0051 is not set, go to next step.
  2. Calibration was successful. Perform ELC trim height and steering autocenter adjustments. See «ELC TRIM HEIGHT»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__elc-trim-height) and «STEERING AUTOCENTER»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__steering-autocenter) under ADJUSTMENTS.
  3. Using scan tool, calibrate CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS. Clear codes. Wait 30 seconds. Display codes. If Code RS0051 is set, go to next step. If Code RS0051 is not set, calibration was successful. Perform ELC trim height and steering autocenter adjustments. See «ELC TRIM HEIGHT»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__elc-trim-height) and «STEERING AUTOCENTER»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__steering-autocenter) under ADJUSTMENTS.
  4. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0060, 0061, 0062 & 0063: CVRSS POSITION SENSOR INPUT FAULT

  1. CODE RS0060 Left Front CVRSS Position Sensor Input Fault
  2. CODE RS0061 Right Front CVRSS Position Sensor Input Fault
  3. CODE RS0062 Left Rear CVRSS Position Sensor Input Fault
  4. CODE RS0063 Right Rear CVRSS Position Sensor Input Fault
  1. Clear codes. Wait 10 seconds. Display codes. If Code RS0064, RS0065, RS0066 or RS0067 is not set, go to next step. If Code RS0064, RS0065, RS0066 or RS0067 is set, go to Code RS0064, RS0065, RS0066 or RS0067 for diagnosis.
  2. If Code RS0060, RS0061, RS0062 or RS0063 is set, go to next step. If Code RS0060, RS0061, RS0062 or RS0063 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  3. Check for mechanical problems at position sensor (i.e. disconnected sensor link). Using scan tool, monitor RSS DATA RS D12, RS D11, RS D14 or RS D13 for position sensor being tested. If voltage is less than one volt, go to next step. If voltage is 1-4.5 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If voltage is more than 4.5 volts, go to step 18).
  4. Using DVOM, backprobe measuring voltage between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and ground circuit terminal (Black wire) of CVRSS control module connector C1 (C2 on right front). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than one volt, go to step 7). If voltage is more than one volt, go to next step.
  5. Turn ignition off. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Using scan tool, monitor RSS DATA RS D12, RS D11, RS D14 or RS D13 for position sensor being tested. If voltage is less than one volt, go to next step. If voltage is more than one volt, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  6. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  7. Turn ignition off. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) of CVRSS control module harness connector C1 (C2 on right front) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to step 12). If continuity exists, go to next step.
  8. Disconnect position sensor connector. Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) of position sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, go to next step.
  9. Repair short to ground in Tan/White wire on front, or Light Green wire on rear.
  10. Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) of position sensor connector (component side) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity does not exist, go to next step. If continuity exists, replace position sensor.
  11. Check position sensor connector for debris or corrosion. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  12. Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and ground circuit terminal (Black wire) of CVRSS control module harness connector C1 (C2 on right front). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and drain wire return terminal (Bare wire) of CVRSS control module harness connector C1 (C2 on right front). If continuity does not exist on both circuits, go to step 16). If continuity exists on either circuit, go to next step.
  13. Disconnect position sensor connector. Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and ground circuit terminal (Black wire) of CVRSS control module harness connector C1 (C2 on right front). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and drain wire return terminal (Bare wire) of CVRSS control module harness connector C1 (C2 on right front). If continuity does not exist on both circuits, go to next step. If continuity exists on either circuit, repair short between affected circuits.
  14. Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and ground circuit terminal (Black wire) of position sensor connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, replace position sensor. If continuity does not exist, go to next step.
  15. Check position sensor connector for debris or corrosion. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  16. Disconnect position sensor connector. Check continuity of the following circuits between terminals of CVRSS control module harness connector C1 (C2 on right front) and position sensor harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Position sensor input circuit (Tan/White wire on front; Light Green on rear) 8-volt reference circuit (Light Green/Black) Ground circuit (Black wire) If continuity exists on all circuits, go to next step. If continuity does not exist on any circuit, repair open in affected circuit.
  17. Check CVRSS control module connector and position sensor connector for debris or corrosion. Reconnect CVRSS control module connector. Reconnect position sensor connector. Turn ignition on. Using scan tool, monitor RSS DATA RS D12, RS D11, RS D14 or RS D13 for position sensor being tested. If voltage is less than one volt, replace position sensor. If voltage is more than one volt, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  18. Using DVOM, backprobe measuring voltage between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and ground circuit terminal (Black wire) of CVRSS control module connector C1 (C2 on right front). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4.5 volts, go to next step. If voltage is more than 4.5 volts, go to step 21).
  19. Turn ignition off. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Using scan tool, monitor RSS DATA RS D12, RS D11, RS D14 or RS D13 for position sensor being tested. If voltage is more than 4.5 volts, go to next step. If voltage is less than 4.5 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  20. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  21. Turn ignition off. Disconnect position sensor connector. Check continuity between ground circuit terminal (Black wire) of position sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to step 26). If continuity does not exist, go to next step.
  22. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check continuity of ground circuit (Black wire) between CVRSS control module harness connector C1 (C2 on right front) and position sensor harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, repair open in Black wire.
  23. Check continuity between ground circuit terminal (Black wire) of CVRSS control module connector C1 (C2 on right front) (component side) and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to step 25). If continuity does not exist, go to next step.
  24. Reconnect position sensor connector. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  25. Check position sensor connector for debris or corrosion. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  26. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check continuity between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) and 8-volt reference circuit terminal (Light Green/Black wire) of position sensor harness connector. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If continuity exists, go to next step. If continuity does not exist, go to step 28).
  27. Repair short between Tan/White wire on front, or Light Green wire on rear and Light Green/Black wire.
  28. Turn ignition on. Using DVOM, measure voltage between position sensor input circuit terminal (Tan/White wire on front; Light Green wire on rear) of position sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than one volt, go to step 30). If voltage is more than one volt, go to next step.
  29. Repair short to voltage in Tan/White wire on front, or Light Green wire on rear.
  30. Turn ignition on. Check CVRSS control module connector and position sensor connector for debris or corrosion. Reconnect CVRSS control module connector. Reconnect position sensor connector. Turn ignition on. Using scan tool, monitor RSS DATA RS D12, RS D11, RS D14 or RS D13 for position sensor being tested. If voltage is more than 4.5 volts, replace position sensor. If voltage is less than 4.5 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.

CODE RS0064, 0065, 0066 & 0067: CVRSS POSITION SENSOR OVER-CURRENT FAULT

  1. CODE RS0064 Left Front CVRSS Position Sensor Over-Current Fault
  2. CODE RS0065 Right Front CVRSS Position Sensor Over-Current Fault
  3. CODE RS0066 Left Rear CVRSS Position Sensor Over-Current Fault
  4. CODE RS0067 Right Rear CVRSS Position Sensor Over-Current Fault
  1. Clear codes. Wait 10 seconds. Display codes. If Code RS0064, RS0065, RS0066 or RS0067 is set, go to next step. If Code RS0064, RS0065, RS0066 or RS0067 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Turn ignition on. Using DVOM, backprobe measuring voltage of 8-volt reference circuit (Light Green/Black wire) at CVRSS control module connector C1 (C2 on right front) to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 7 volts, go to next step. If voltage is 7-9 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If voltage is more than 9 volts, repair short to voltage in Light Green/Black wire.
  3. Turn ignition off. Disconnect position sensor connector. Turn ignition on. Using DVOM, measure voltage between 8-volt reference circuit (Light Green/Black wire) of position sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 7 volts, go to step 5). If voltage is more than 7 volts, go to next step.
  4. Turn ignition off. Check position sensor connector for debris or corrosion. Reconnect position sensor connector. Turn ignition on. Using DVOM, backprobe measuring voltage of 8-volt reference circuit (Light Green/Black wire) at CVRSS control module connector C1 (C2 on right front) to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 7 volts, replace position sensor. If voltage is more then 7 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  5. Turn ignition off. Disconnect 32-pin CVRSS control module connector C1 (24-pin CVRSS control module connector C2 on right front). Check continuity between the following terminals of CVRSS control module harness connector C1 (C2 on right front). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . 8-volt reference circuit (Light Green/Black wire) and ground circuit (Black wire) 8-volt reference circuit (Light Green/Black wire) and drain wire return circuit (Bare wire) 8-volt reference circuit (Light Green/Black wire) and ground If continuity does not exist on all terminals, go to step 7). If continuity exists on any terminal, go to next step.
  6. Repair short between Light Green/Black wire and Black wire. Repair short between Light Green/Black wire and Bare wire. Repair short between Light Green/Black wire and ground.
  7. Turn ignition off. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Using DVOM, backprobe measuring voltage of 8-volt reference circuit (Light Green/Black wire) at CVRSS control module connector C1 (C2 on right front) to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 7 volts, go to next step. If voltage is more then 7 volts, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  8. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0080: STEERING SENSOR INPUT FAULT

  1. Clear codes. Drive vehicle faster than 50 MPH for more than 15 seconds. Display codes. If Code RS0081 is not set, go to next step. If Code RS0081 is set, go to Code RS0081 for diagnosis.
  2. If Code RS0080 is set, go to next step. If Code RS0080 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  3. Turn ignition on. Center steering wheel and verify front wheels are straight. Using scan tool, monitor RSS DATA RS D15. If voltage is less than 2 volts or more than 3 volts, go to step 6). If voltage is 2-3 volts, go to next step.
  4. Using scan tool, monitor RSS DATA RS D15 while rotating steering wheel. If display remains constant, go to next step. If display changes, check for intermittent short to ground, short to voltage or open.
  5. Check sensor for removal of Yellow locking tab. Check sensor for proper assembly. If assembly is okay, replace steering sensor.
  6. Turn ignition off. Center steering wheel and verify front wheels are straight. Disconnect steering sensor connector. Using DVOM, measure resistance between supply circuit terminal (Gray wire) and ground circuit terminal (Orange/Black wire) of steering sensor connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is 8000-12,000 ohms, go to next step. If resistance is less than 8000 ohms or more than 12,000 ohms, replace steering sensor.
  7. Check for steering sensor misalignment. If steering sensor is misaligned, clear codes. If steering sensor is not misaligned, go to next step.
  8. Using DVOM, measure resistance between steering signal circuit terminal (Light Blue wire) and ground circuit termial (Orange/Black wire) of steering sensor connector (component side). See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If resistance is 3500-5500 ohms, go to next step. If resistance is less than 3500 ohms or more than 5500 ohms, replace steering sensor.
  9. Disconnect 24-pin CVRSS control module connector C2. Check continuity between the following circuits of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Supply circuit (Gray wire) Steering signal circuit (Light Blue wire) Ground circuit (Orange/Black wire) If continuity does not exist on all circuits, go to next step. If continuity exists on any circuit, repair short to ground in affected circuit. Reinstall/reconnect all components/connectors.
  10. Check for opens in supply circuit (Gray wire), steering signal circuit (Light Blue wire), and ground circuit (Orange/Black wire). Repair open in affected circuit. Reinstall/reconnect all components/connectors. If all circuits are okay, go to next step.
  11. Turn ignition on. Check for shorts to voltage in supply circuit (Gray wire), steering signal circuit (Light Blue wire), and ground circuit (Orange/Black wire). If voltage is present on any, repair short to voltage in affected circuit. Reinstall/reconnect all components/connectors. If voltage is not present on any, go to next step.
  12. Turn ignition off. Reinstall/reconnect all components/connectors. Clear codes. If Code RS0080 is not set, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS. If Code RS0080 is set, replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

CODE RS0081: STEERING SENSOR SUPPLY OVER-CURRENT FAULT

  1. Clear codes. Wait 30 seconds. Display codes. If Code RS0081 is set, go to next step. If Code RS0081 is not set, go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  2. Using DVOM, backprobe measuring voltage of supply circuit (Gray wire) at CVRSS control module connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 4 volts, go to step 8). If voltage is 4-6 volts, go to step 6). If voltage is more than 6 volts, go to next step.
  3. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Turn ignition on. Using DVOM, measure voltage between supply circuit (Gray wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 6 volts, go to step 5). If voltage is more than 6 volts, go to next step.
  4. Disconnect steering sensor connector. Using DVOM, measure voltage between supply circuit terminal (Gray wire) of steering sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 6 volts, replace steering sensor. If voltage is more than 6 volts, repair short to voltage in Gray wire.
  5. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  6. Clear codes. Wait 30 seconds. Display codes. If Code RS0081 is set, go to next step. If Code RS0081 is not set, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  7. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.
  8. Disconnect steering sensor connector. Using DVOM, measure voltage between supply circuit terminal (Gray wire) of steering sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 2 volts, go to step 10). If voltage is more than 2 volts, go to next step.
  9. Check steering sensor connector for debris or corrosion. Reconnect steering sensor connector. Turn ignition on. Using DVOM, backprobe measuring voltage of supply circuit (Gray wire) at CVRSS control module connector C2 to ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 2 volts, replace steering sensor. If voltage is more than 2 volts, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  10. Turn ignition off. Disconnect 24-pin CVRSS control module connector C2. Check continuity between supply circuit (Gray wire) of CVRSS control module harness connector C2 and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . Also, check continuity between supply circuit (Gray wire) and ground circuit (Orange/Black wire) of CVRSS control module harness connector C2. If continuity does not exist on both circuits, go to next step. If continuity exists on either circuit, repair short in Gray wire or Orange/Black wire.
  11. Check CVRSS control module connector for debris or corrosion. Reconnect CVRSS control module connector. Turn ignition on. Using DVOM, measure voltage between supply circuit (Gray wire) of steering sensor harness connector and ground. See «WIRING DIAGRAMS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing) . If voltage is less than 2 volts, go to next step. If voltage is more than 2 volts, problem no longer exists. Go to «NOTES ON INTERMITTENTS»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__notes-on-intermittents) under SELF-DIAGNOSTICS.
  12. Replace CVRSS control module. Calibrate NEW CVRSS control module. See «CALIBRATING CVRSS CONTROL MODULE»(/cadillac/deville-concours/1994-1998/remont/electronic-suspension/#suspension-electronic-cv-road-sensing__calibrating-cvrss-control-module) under ADJUSTMENTS.

Removal & Installation (Front)

Raise and support vehicle. Remove wheel. Open clip and remove strut harness and sensor harness from clip. Disconnect sensor electrical connector. Remove clip from back of sensor. Remove strut harness from bracket. Disconnect sensor link from ball stud. Remove screws and CVRSS position sensor. To install, reverse removal procedure. Tighten screws to 89 INCH lbs. (10 N.m).

Removal & Installation (Rear)

Raise and support vehicle. Remove wheel. Disconnect sensor electrical connector. Remove sensor harness clips from vehicle. Disconnect sensor link from ball stud. Remove screws and CVRSS position sensor. To install, reverse removal procedure. Tighten screws to 11 ft. lbs. (15 N.m). Adjust ELC trim height. See ELC TRIM HEIGHT under ADJUSTMENTS.

Removal & Installation

Remove front trunk trim panel. Disconnect CVRSS control module electrical connectors. Remove CVRSS control module from right electronics bay. To install, reverse removal procedure. Calibrate NEW CVRSS control module. See CALIBRATING CVRSS CONTROL MODULE under ADJUSTMENTS. Adjust ELC trim height and steering autocenter. See ELC TRIM HEIGHT and STEERING AUTOCENTER under ADJUSTMENTS.

Remove steering column. See STEERING COLUMN article in STEERING section. Remove and discard lower spring retainer. Remove seal retaining bushing and steering shaft seal. Carefully pry toothed rotational dampener past shaft bolt notch. Remove bearing retainer and steering sensor assembly. To install, reverse removal procedure. Ensure steering shaft is centered. Clip steering sensor at zero detent. Align dampener slots to ribs of retainer. Push dampener until it contacts steering sensor. Install remaining components and unclip steering sensor.

Removal

  1. Ensure wheels are in straight ahead position and steering wheel is locked. Raise and support vehicle. Remove front wheels. Disconnect CVRSS position sensor and exhaust "Y" pipe at converter. Remove steering column intermediate shaft lower coupling pinch bolt. Disconnect steering column intermediate shaft lower coupling from rack and pinion stub shaft. CAUTION: Failure to disconnect steering shaft coupling from rack and pinion assembly shaft may damage these components, possibly resulting in loss of steering control after installation. DO NOT start engine with hoses removed, as severe pump damage will result.
  2. Remove cotter pins and castle nuts from outer tie rod ends. Separate tie rod ends from steering knuckles using Steering Linkage Puller (J-24319-01 ). Remove fluid line plastic retainer. Disconnect pressure switch electrical connector. Disconnect pressure and return lines from rack and pinion assembly. CAUTION: DO NOT lower rear of engine frame too far. Engine components near firewall may be damaged.
  3. Disconnect Magnetic Speed Variable Assist (MSVA) actuator electrical connector. Support rear of engine frame with jack to allow lowering of engine frame. Loosen, but DO NOT remove, front engine frame bolts. Remove rear engine frame bolts. Lower rear engine frame about 4".
  4. Remove rack and pinion assembly mounting bolts. Remove hidden retaining bolt inside frame. Remove rack and pinion assembly through left wheel opening. Remove MSVA actuator and manifold assembly. Inspect all bushings and gasket for excessive wear. Replace as necessary.

Installation

To install, reverse removal procedure. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS . Fill and bleed power steering hydraulic system. See POWER STEERING HYDRAULIC SYSTEM BLEEDING under LUBRICATION. Adjust toe-in as necessary.

SHOCK ABSORBER/STRUT ASSEMBLY

See appropriate SUSPENSION - FRONT article or SUSPENSION - REAR article in SUSPENSION section.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Engine Frame Bolts76 (103)
Pressure & Return Lines20 (27)
Rack & Pinion Mounting Bolt/Nuts50 (68)
Steering Shaft Lower Coupling Pinch Bolt35 (47)
Tie Rod End Castle Nut(1)
Wheel Lug Nuts100 (140)
INCH Lbs. (N.m)
MSVA Actuator Screws78 (8.9)
(1) Tighten to 35 ft. lbs. (47 N.m) minimum plus 1/6 additional turn or 52 ft. lbs. (70 N.m) maximum to align cotter pin holes. DO NOT back off nut to align cotter pin holes.
(1)Tighten to 35 ft. lbs. (47 N.m) minimum plus 1/6 additional turn or 52 ft. lbs. (70 N.m) maximum to align cotter pin holes. DO NOT back off nut to align cotter pin holes.

TORQUE SPECIFICATIONS

Continuously Variable Road-Sensing Suspension System Wiring Diagram (1 Of 2). Scheme 14

Scheme 14: Continuously Variable Road-Sensing Suspension System Wiring Diagram (1 Of 2)
Scheme 14: Continuously Variable Road-Sensing Suspension System Wiring Diagram (1 Of 2)

Continuously Variable Road-Sensing Suspension System Wiring Diagram (2 Of 2). Scheme 15

Scheme 15: Continuously Variable Road-Sensing Suspension System Wiring Diagram (2 Of 2)
Scheme 15: Continuously Variable Road-Sensing Suspension System Wiring Diagram (2 Of 2)

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