DESCRIPTION
| WARNING | Deactivate air bag system before performing any service operation. See AIR BAG RESTRAINT SYSTEM article. DO NOT apply electrical power to any component on steering column without first deactivating air bag system. Air bag may deploy. |
The cruise control system maintains a desired vehicle speed under normal driving conditions. Common components of cruise control systems include a control module, Vehicle Speed Sensor (VSS), combination switch and an actuator to maintain vehicle speed. Release or cancelling switches are used to disengage cruise control operation. These release switches are incorporated into brakelight switch and clutch switch circuits.
OPERATION
Main (auto-cruise) switch must be on to engage cruise control. When system is on, auto-cruise indicator of meter panel is illuminated. On all models, several functions are available to engage and operate cruise control system.
Set Function
To set vehicle speed, cruise control system must be on, and vehicle speed must be greater than 25 MPH. Depress and release SET switch. This will engage cruise control to maintain current vehicle speed when SET switch is engaged.
Coast Function
During cruise control operation, depress and hold SET switch. Cruise control will disengage (coast) until SET switch is released. Cruise control will maintain current vehicle speed when SET switch is released.
Accelerate Function
During cruise control operation, vehicle speed setting can be increased. Depress and hold Resume/Accel(R/A) switch until desired speed is obtained, and release R/A switch. Cruise control will maintain new vehicle speed, set when R/A switch is released.
Resume Function
If cruise control operation has been temporarily canceled, depress and release R/A switch. Vehicle speed setting, stored before cruise control was temporarily canceled, will be resumed. If cruise control is turned off, speed setting is cleared from memory and resume function will not operate until new speed setting is stored.
Tap-Up Function
During cruise control operation, speed setting can be increased by increments of one MPH. To tap up vehicle speed, depress and release R/A switch. Repeat to increase speed setting as desired.
Tap-Down Function
During cruise control operation, speed setting can be decreased by increments of one MPH. To tap down vehicle speed, depress and release SET switch. Repeat to decrease speed setting as desired.
Release/Cancellation Switches
Cruise control operation is temporarily canceled by depressing brake or clutch pedal. Cruise control operation is permanently disengage when cruise main switch is turned off.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Actuator & Pump | Under Hood On Right Fender |
| Brakelight Switch | On Bracket Above Brake Pedal |
| Clutch Switch (M/T) | On Bracket Above Clutch Pedal |
| Combination Switch | On Wiper/Washer Lever, Right Side Of Steering Column |
| Cruise Control Module | Behind Right Kick Panel |
| Main (Auto Cruise) Switch | On Dash Panel, Right Of Steering Column |
| Mode Switch (A/T) | Mounted On Transmission |
| Vehicle Speed Sensor | Incorporated Into Speedometer |
COMPONENT LOCATIONS
ACTUATOR CABLE
Ensure accelerator pedal is fully returned (throttle valve fully closed). Loosen cable nuts at actuator. (Scheme 1) Pull cable housing toward pedal until no slack in inner cable exists. Tighten nut "A" by hand until flush with bracket. Tighten nut "B" and lock both nuts in place.
Scheme 1
BRAKELIGHT SWITCH
Ensure brake pedal is fully returned. Disconnect electrical connector from switch. Loosen lock nut and tighten brakelight switch by hand until switch is firmly against pedal. Loosen brakelight switch 1/2 turn. Tighten lock nut and reconnect electrical connector. Ensure brakelight switch-to-pedal arm clearance is 0.02-0.04" (0.5-1.0 mm).
CLUTCH SWITCH
Ensure clutch pedal is fully returned. Disconnect electrical connector from switch. Loosen lock nut and tighten clutch switch by hand until switch is firm against clutch lever. Back switch out one full turn. Tighten lock nut and reconnect electrical connector.
- Disconnect brakelight switch connector. With brake pedal depressed, continuity should exist between switch terminals No. 1 and 4. (Scheme 2) Continuity should not exist between terminals No. 2 and 3. Replace switch if continuity is not as specified.
- With brake pedal released, continuity should exist between switch terminals No. 2 and 3. Continuity should not exists between terminals No. 1 and 4. Replace brakelight switch if it does not test as specified.
Identifying Brakelight Switch Terminals. Scheme 2
Disconnect clutch switch harness connector. With clutch pedal depressed, no continuity should exist between switch terminals. With clutch pedal released, continuity should exist between switch terminals. Replace clutch switch if it does not test as specified.
CRUISE CONTROL ACTUATOR
- Disconnect cruise control actuator harness connector. Measure resistance or current at specified actuator terminals. See «CRUISE CONTROL ACTUATOR VALUES»(/acura/slx/i-1995-1999/remont/cruise-control-systems/#cruise-control-system) table. (Scheme 3) Replace cruise control actuator if readings are not as specified.
- Using jumper wires, apply battery voltage to actuator terminal No. 2, and ground actuator terminal No. 3. Actuator motor should operate smoothly.
- Leaving jumper wires connected from step 2), apply ground to terminals No. 1 and 4. Actuator cable should move.
- Disconnect ground from terminals No. 1 and 4. Actuator cable should move in opposite direction of previous step. If actuator does not test as described, replace actuator vacuum pump and VSV.
| Circuit | Terminals No. | Specification |
|---|---|---|
| Safety Valve | 2-4 | 62-72 Ohms |
| Vacuum Pump | 2-3 | 2 Amps Maximum |
| Vent Valve | 1-2 | 62-72 Ohms |
CRUISE CONTROL ACTUATOR VALUES
Identifying Cruise Control Actuator Terminals. Scheme 3
CRUISE CONTROL MODULE
Disconnect cruise control module connector. Perform all circuit tests at cruise control module wiring harness connector. (Scheme 4) Ensure ignition and cruise control main switch are on. Unless told otherwise, check circuit between specified terminal and ground. See appropriate table
- «CRUISE CONTROL MODULE HARNESS CONNECTOR TERMINAL»(/acura/slx/i-1995-1999/remont/cruise-control-systems/#cruise-control-system)
Scheme 4
| Between | Circuit | Test Condition | Specification |
|---|---|---|---|
| 1 & Ground | PCM | Ignition & Main Switch On | Continuity |
| 2 & Ground | Main Switch | Continuity To Ground | |
| 3 & Ground | Cruise Indicator Light | Ignition Switch On | 0 Volts |
| 4 & Ground | Clutch Switch (M/T) | Clutch Pedal Depressed | 12 Volts |
| 4 & Ground | Clutch Switch (M/T) | Clutch Depressed | 12 Volts |
| 4 & Ground | Mode Switch (A/T) | Gear Selector In P R & N | 0 Volts |
| 4 & Ground | Mode Switch (A/T) | Gear Selector In D 3 2 & L | 12 Volts |
| 5 & Ground | Vent Valve | See CRUISE CONTROL ACTUATOR Test | 62-72 Ohms |
| 6 & Ground | Ground | Continuity To Ground | |
| 7 & Ground | Vacuum Pump | See CRUISE CONTROL ACTUATOR Test | 2 Amps Maximum |
| 9 & 2 | Resume Switch | Resume Switch On | Continuity |
| 10 & 2 | Set Switch | Set Switch On | Continuity |
| 12 & Ground | Starter | Ignition Switch In Start Position | 12 Volts |
| 14 & Ground | Safety Valve | See CRUISE CONTROL ACTUATOR Test | 62-72 Ohms |
| 15 & Ground | Main Switch | Ignition Switch In Start Position | 12 Volts |
| 16 & 2 | Brakelight Switch | Pedal Depressed | No Continuity |
| 16 & 2 | Brakelight Switch | Pedal Released | Continuity |
| 19 & Ground | Vehicle Speed Sensor | 13.5K Ohms To Infinite | |
| 20 & Ground | Brakelight Switch | Pedal Released/ Depressed | 0 Volts/12 Volts |
| (1) Connector terminals not listed are not used. | |||
| (1) | Connector terminals not listed are not used. |
CRUISE CONTROL MODULE HARNESS CONNECTOR TERMINAL (1)
COMBINATION SWITCH
- If necessary, remove cruise control switch (part of combination switch assembly. See COMBINATION SWITCH under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES article.
- Disconnect cruise control switch harness connector. Check continuity between specified terminals of combination switch connector with switch in appropriate position. (Scheme 5) Replace combination switch if readings are not as specified. See COMBINATION SWITCH under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES article.
Scheme 5
MAIN SWITCH (AUTO-CRUISE)
Disconnect main switch harness connector. With switch in off position, ensure continuity exists between switch terminals No. 4 and 5. (Scheme 6) Switch illumination is between terminals No. 2 and 6. Replace switch if it does not test as specified.
Scheme 6
MODE SWITCH
Locate mode (park/neutral) switch on left side of automatic transmission. Disconnect mode switch harness connector. (Scheme 7) Check continuity between terminals specified in MODE SWITCH CONTINUITY TEST table. Replace mode switch if it does not test as specified.
Identifying Mode Switch Terminals. Scheme 7
| Switch Position | Terminals No. |
|---|---|
| P | 3, 5 & 8 |
| R | 5, 7 & 8 |
| N | 3, 5 & 7 |
| D | 5, 6 & 7 |
| 3 | 3, 5, 6, 7 & 8 |
| 2 | 5, 6 & 8 |
| 1 Or L | 3, 5 & 6 |
MODE SWITCH CONTINUITY TEST
VEHICLE SPEED SENSOR
Remove instrument cluster. See INSTRUMENT PANELS article. Measure resistance between GND (ground) terminal and 4P terminal. (Scheme 8) Resistance should be 13,500-16,500 ohms to infinite resistance. If resistance is not as specified, replace speedometer.
Testing Vehicle Speed Sensor. Scheme 8
TROUBLE SHOOTING
Trouble shoot symptom following CRUISE CONTROL INOPERATIVE table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Fuse C-4 (10-Amp) | Blown Fuse |
| Main Switch | Bad Switch |
| Set/Coast Switch | Bad Switch |
| Clutch Switch (M/T) | Bad Switch |
| Mode Switch (A/T) | Bad Switch |
| Brakelight Switch | Bad Switch |
| Vacuum Pump & VSV | Defective Pump Or Valve |
| Vehicle Speed Sensor | No Output Signal |
| Vacuum Hose | Disconnected, Pinched Or Cracked |
| Actuator | Defective, Restricted Or Misadjusted Valve |
| Wiring Harness | Disconnected, Or Open In Harness |
| Cruise Control Module | Defective Module |
CRUISE CONTROL INOPERATIVE
CRUISE CONTROL SPEED UNSTABLE
Trouble shoot symptom following CRUISE CONTROL SPEED UNSTABLE table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Vehicle Speed Sensor | Defective Speedometer Cable |
| Vacuum Hose | Disconnected, Pinched Or Cracked |
| Vacuum Pump & VSV | Defective Pump Or Valve |
| Actuator | Defective, Restricted Or Misadjusted Valve |
| Accelerator Cable | Incorrect Free Play |
| Cruise Control Module | Defective Module |
CRUISE CONTROL SPEED UNSTABLE
CRUISE CONTROL CANCELS
Trouble shoot symptom following CRUISE CONTROL CANCELS table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Clutch Switch (M/T) | Bad Switch |
| Brakelight Switch | Bad Switch |
| Vehicle Speed Sensor | No Output Signal |
| Vacuum Pump & VSV | Defective Pump Or Valve |
| Cruise Control Module | Defective Module |
CRUISE CONTROL CANCELS
CRUISE CONTROL RESUME/ACCEL (TAP-UP) FUNCTION INOPERATIVE
Trouble shoot symptom following RESUME/ACCEL FUNCTION INOPERATIVE table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Resume/Accel Switch | Bad Switch |
| Wiring Harness | Disconnected, Or Open In Harness |
| Cruise Control Module | Defective Module |
RESUME/ACCEL FUNCTION INOPERATIVE
CRUISE CONTROL COAST (TAP-DOWN) FUNCTION INOPERATIVE
Trouble shoot symptom following COAST FUNCTION INOPERATIVE table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Set/Coast Switch | Bad Switch |
| Wiring Harness | Disconnected, Or Open In Harness |
| Cruise Control Module | Defective Module |
COAST FUNCTION INOPERATIVE
CRUISE CONTROL DOES NOT CANCEL
Trouble shoot symptom following CRUISE CONTROL DOES NOT CANCEL table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Clutch Switch (M/T) | Bad Switch |
| Brakelight Switch | Bad Switch |
| Mode Switch | Bad Switch |
| Cruise Control Module | Defective Module |
| Transmission Control Module | Defective Module |
CRUISE CONTROL DOES NOT CANCEL
CRUISE CONTROL DOES NOT KICK DOWN FROM OVERDRIVE TO 3RD
Trouble shoot symptom following CRUISE CONTROL DOES NOT KICK DOWN - OVERDRIVE TO 3RD table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Wiring Harness | Disconnected, Or Open In Harness |
| Transmission Control Module | Defective Module |
| Powertrain Control Module | Defective Module |
| (1) Cruise speed is less than 3 MPH or more from preset speed. | |
| (1) | Cruise speed is less than 3 MPH or more from preset speed. |
CRUISE CONTROL DOES NOT KICK DOWN - OVERDRIVE TO 3RD (1)
CRUISE CONTROL INDICATOR DOES NOT COME ON
Trouble shoot symptom following CRUISE CONTROL INDICATOR DOES NOT COME ON table from top to bottom. Test or replace component.
| Check Point | Possible Cause |
|---|---|
| Fuse C-10 (10-amp) | Bad Switch |
| Indicator Bulb | Burned Out Filament |
| Wiring Harness | Disconnected, Or Open In Harness |
| Cruise Control Module | Defective Module |
CRUISE CONTROL INDICATOR DOES NOT COME ON
Removal & Installation
- Disconnect negative battery cable. Disconnect vacuum pump electrical connector. Disconnect vacuum hose from actuator. Remove vacuum pump. Disconnect actuator cable from accelerator pedal.
- Remove outer cable clips. Remove actuator bolts and actuator. To install, reverse removal procedure. Adjust actuator cable. See «ACTUATOR CABLE»(/acura/slx/i-1995-1999/remont/cruise-control-systems/#cruise-control-system__actuator-cable) under ADJUSTMENTS.
Disconnect negative battery cable. Locate cruise control module behind right kick panel. Remove kick panel and cruise control module. To install, reverse removal procedure.
Cruise control switch is part of combination switch assembly. See COMBINATION SWITCH under REMOVAL & INSTALLATION in STEERING COLUMN SWITCHES article.
Remove instrument cluster trim panel. See REMOVAL & INSTALLATION in INSTRUMENT PANELS article. Disconnect wiring harness from cruise control main switch. Release locking tab on back side of switch and remove switch from trim panel. To install, reverse removal procedure.
Vehicle speed sensor is incorporated into speedometer. See REMOVAL & INSTALLATION in INSTRUMENT PANELS article.
