Cruise Control System Nissan Stanza III

DESCRIPTION & OPERATION

Note. For system component locations, see SYSTEM COMPONENT LOCATIONS table under DESCRIPTION & OPERATION.

ACTUATOR

Actuator pump, which contains a vacuum pump motor and control valve assembly, supplies vacuum for actuator diaphragm. Control valve assembly regulates vacuum supply to diaphragm based on signals received from cruise control module.

BRAKE CANCEL, BRAKELIGHT & CLUTCH SWITCHES

Note. DO NOT confuse brake cancel switch (activated by braking) with CANCEL switch on steering wheel. See STEERING SWITCH.

These switches disengage system. Brake cancel switch and brakelight switch are separate switches. When brake pedal is pressed

1. Brakelight switch allows current flow to control module.
2. Brake cancel switch interrupts current flow to control module.

If either condition occurs, control module disengages the system. When clutch pedal is pressed, clutch switch interrupts current flow to control module. This disengages system.

CRUISE CONTROL MODULE

Based on inputs received from various sensors, cruise control module sends signals to actuator control valve assembly to maintain vehicle speed.

INHIBITOR RELAY (A/T)

When transmission is in Park or Neutral, inhibitor relay interrupts current flow to cruise control module, disengaging system.

MAIN SWITCH

Switch is mounted on instrument panel and supplies power for system.

STEERING SWITCH

Steering switch is a system control switch, mounted on steering wheel. Steering switch has 3 different switches, controlling different functions of system. On Pathfinder and Pickup, steering switch contains COAST, RESUME and ACCEL switches. On all other models, steering switch contains RESUME/ACCEL, CANCEL and SET/COAST switches.

SYSTEM COMPONENT LOCATIONS

SYSTEM COMPONENT LOCATIONS

Scheme 1

Scheme 2

Scheme 3

ACTUATOR CABLE

Note. Before adjusting actuator (cruise control) cable, ensure throttle cable is properly adjusted. DO NOT twist or overtighten cable wire during adjustment procedure.

Loosen actuator cable adjusting nuts. Without pressing accelerator pedal, adjust cable until there is no free play. Back off cable adjusting nut 1/2 - 1 turn to allow slight free play in cable. Tighten cable adjusting nuts.

Loosen lock nut. Turn adjusting nut until clearance between tip of switch and pedal is .012-.040" (.30-1.0 mm).

TESTING

Note. For system component locations, see SYSTEM COMPONENT LOCATIONS under DESCRIPTION & OPERATION.

Pathfinder & Pickup

1. Turn ignition is off. Press and hold ACCEL switch. Check continuity between cruise control module connector terminals No. 3 and 14. (Scheme 8)
2. If there is continuity, circuit is okay. If there is no continuity, check ACCEL switch wiring circuit. If ACCEL switch wiring circuit is okay, replace ACCEL switch.

Except Pathfinder & Pickup

See RESUME SWITCH CIRCUIT test.

1. Turn ignition off. Disconnect actuator pump connector. Connect battery positive lead to actuator pump connector terminal No. 1 and negative lead to terminal No. 4. (Scheme 4)or (Scheme 5).
2. Replace actuator pump if it does not operate. If actuator pump operates, connect battery positive lead to terminal No. 1 and negative lead to terminals No. 2, 3 and 4 (simultaneously).
3. If actuator wire moves, go to next step. On 1991 models, if actuator wire does not move, replace actuator. On 1992 models, if actuator wire does not move, check for vacuum at actuator hose connection. If no vacuum is present, replace actuator pump. If vacuum is present, replace actuator.
4. With battery leads connected to terminals as in step 2), disconnect negative lead from terminal No. 4. If actuator wire returns to original position 50-60 seconds after disconnecting negative lead from terminal No. 4, go to next step. If actuator wire does not return as specified, replace actuator pump.
5. Disconnect negative lead from terminal No. 1. If actuator wire does not immediately return to original position, replace actuator pump. If actuator wire immediately returns to original position, actuator and actuator pump are okay.

Scheme 4

Scheme 5

1. Turn ignition on. Press and hold CANCEL switch. Measure voltage between cruise control module connector terminals No. 1 and 3, and terminals No. 2 and 3. (Scheme 6)and (Scheme 7).
2. If battery voltage is present in each case, CANCEL switch circuit is okay. If battery voltage is not present in each case, check CANCEL switch wiring circuit. If CANCEL switch wiring circuit is okay, replace steering switch assembly.

Scheme 6

Scheme 7

Scheme 8

300ZX

1. Check continuity between cruise control relay terminals No. 1 and 2. (Scheme 9) If there is continuity, go to step 2). If continuity is NOT present, replace relay.
2. Check continuity between terminals No. 3 and 5, and terminals No. 6 and 7. If there is continuity, replace relay. If there is no continuity, energize relay by connecting 12-volt source across terminals No. 1 and 2.
3. With relay energized, check continuity between terminals No. 3 and 5, and terminals No. 6 and 7. If there is continuity in each test, relay is okay. If there is no continuity in one or both tests, replace relay.

Scheme 9

Except 300ZX

1. Remove relay. Ensure continuity exists across terminals No. 1 and 2, and no continuity exists across terminals No. 3 and 5. If continuity is not as specified, replace relay.
2. Connect 12-volt source across terminals No. 1 and 2. (Scheme 10) With relay energized, check continuity between terminals No. 3 and 5. If there is no continuity, replace relay. If there is continuity, relay is okay.

Scheme 10

Turn ignition on. Turn cruise control main switch on. Connect voltmeter between cruise control module connector terminals No. 3 and 5. (Scheme 6)and (Scheme 7). If battery voltage is present with brake pedal pressed, clutch pedal pressed (M/T) or transmission in Park or Neutral (A/T), check brake and clutch cancel switches and adjust or replace as necessary. See BRAKE & CLUTCH CANCEL SWITCHES under ADJUSTMENTS. Check inhibitor relay and switch.

GROUND CIRCUIT

Using an ohmmeter, check continuity between ground and cruise control module connector terminal No. 3 (terminal No. 5 on Pathfinder and Pickup). (Scheme 4)and (Scheme 5). If there is no continuity, repair circuit between cruise control module connector and ground.

Ensure ignition is off. Check continuity between cruise control module connector terminals No. 5 and 8. (Scheme 8) If continuity is present, overdrive cancel wiring circuit is okay. If continuity is NOT present, check overdrive cancel wiring circuit. If circuit is okay, replace cruise control module.

Turn ignition on. Turn cruise control main switch to ON position. Place transmission overdrive switch in ON position. Measure voltage between cruise control module connector terminals No. 3 and 12. (Scheme 6)and (Scheme 7). If battery voltage is NOT present, check overdrive cancel wiring circuit.

POWER SUPPLY CIRCUIT

1. Release all pressure from brake and clutch pedals. Turn ignition on. Turn cruise control main switch to ON position. Place automatic transmission in Drive.
2. On all vehicles, measure voltage between cruise control module connector terminals No. 3 and 4 (terminals No. 5 and 13 on Pathfinder and Pickup). (Scheme 4)and (Scheme 5). If battery voltage is present, power supply circuit is okay. If battery voltage is not present, check power supply circuit.

1. Turn ignition off. Press and hold RESUME switch. Using an ohmmeter, check continuity between cruise control module connector terminals No. 2 and 14. (Scheme 8)
2. If there is continuity, circuit is okay. If there is no continuity, check RESUME switch wiring circuit. If RESUME switch wiring circuit is okay, replace RESUME switch.

1. Turn ignition on. Press and hold RESUME/ACCEL switch. Measure voltage between cruise control module connector terminals No. 1 and 3. (Scheme 6)and (Scheme 7).
2. If battery voltage is NOT present, check RESUME/ACCEL switch wiring circuit. If RESUME/ACCEL switch wiring circuit is okay, replace RESUME/ACCEL switch.

1. Turn ignition off. Push and hold COAST switch. Using an ohmmeter, check continuity between cruise control module connector terminals No. 1 and 14. (Scheme 8)
2. If there is continuity, COAST switch circuit is okay. If there is no continuity, check COAST switch wiring circuit. If COAST switch wiring circuit is okay, replace COAST switch.

1. Turn ignition off. Press and hold SET/COAST switch. Measure voltage between cruise control module connector terminals No. 2 and 3. (Scheme 6)and (Scheme 7).
2. If battery voltage is NOT present, check SET/COAST switch wiring circuit. If SET/COAST switch wiring circuit is okay, replace SET/COAST switch.

Maxima & Stanza

1. Raise and support front of vehicle. Remove speed sensor from transaxle, leaving harness connected. Turn ignition off. Connect voltmeter between cruise control module connector terminals No. 3 and 7. (Scheme 6)and (Scheme 7).
2. While slowly turning speed sensor gear counterclockwise, check for voltmeter needle deflection of about.5 volt. If needle deflects 2 times for each revolution, speed sensor and circuit are okay. If needle does not deflect, check speed sensor. If speed sensor is okay, check speed sensor wiring circuit.

NX, Sentra, 240SX & 300ZX

1. Raise and support rear of vehicle. Turn ignition on. Connect voltmeter between cruise control module connector terminals No. 3 and 7. (Scheme 6)and (Scheme 7).
2. While slowly turning rear wheel, check for voltmeter needle deflection. If needle deflects, speed sensor and circuit are okay. If needle does not deflect, check speed sensor. If speed sensor is okay, check speed sensor wiring circuit.

1. Turn ignition off. Disconnect speedometer cable from transmission. Connect ohmmeter between cruise control module connector terminals No. 5 and 10. (Scheme 8)
2. Turn ignition on. Slowly rotate speedometer cable clockwise by hand. If ohmmeter needle does not deflect twice for each revolution, check speed sensor wiring circuit. If wiring circuit is okay, replace speedometer assembly.

NX & Sentra With Analog Instrument Cluster

Remove instrument cluster. Disconnect instrument cluster connectors. Connect an ohmmeter between specified terminals of instrument cluster connector. (Scheme 11) While turning speedometer receptacle with a small screwdriver, watch ohmmeter needle. If needle deflects 2 times for each revolution, speed sensor is okay. If needle does not deflect 2 times for each revolution, replace speed sensor.

Scheme 11

NX & Sentra With Electronic Instrument Cluster, Maxima, Stanza, 240SX & 300ZX

Disconnect speed sensor connector. Remove sensor from transmission. While turning sensor gear counterclockwise quickly by hand, measure AC voltage across sensor connector terminals. If about .5 volt AC is not present, replace sensor.

Turn ignition off. Disconnect actuator harness connector, vacuum hose and cable from actuator. Remove actuator attaching bolt. To install, reverse removal procedure.

Disconnect cable from actuator. Remove screw attaching cable bracket. Remove rubber boots. Loosen lock nuts and remove cable from torsion shaft. To install cable, reverse removal procedure and adjust.

BRAKELIGHT, BRAKE CANCEL & CLUTCH SWITCHES

Disconnect negative battery cable. Remove instrument panel lower left cover. Disconnect wiring harness from switch. Loosen lock nut and remove switch. To install, reverse removal procedure. Adjust switch. See ADJUSTMENTS .

For cruise control module location, see SYSTEM COMPONENT LOCATIONS under DESCRIPTION & OPERATION. Turn ignition off. Disconnect negative battery cable. Remove cruise control module mounting hardware. Remove cruise control module and disconnect harness connector. To install, reverse removal procedure.

Disconnect negative battery cable. Push switch out from behind instrument panel or from below console. Disconnect harness connector from main switch. To install, reverse removal procedure.

TROUBLE SHOOTING

Note. For system component locations, see SYSTEM COMPONENT LOCATIONS under DESCRIPTION & OPERATION.

1. Turn ignition on. Turn cruise control main switch to ON position. If indicator light comes on, go to step 2). If indicator light does not come on, check indicator bulb and main switch. If these components are okay, perform «CRUISE CONTROL RELAY»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
2. Perform «POWER SUPPLY CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system__power-supply-circuit) test under TESTING. If power supply circuit is okay, perform «CUT-OFF CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
3. If cut-off circuit is NOT okay, check brake cancel switch, clutch switch (M/T), inhibitor relay (A/T) and inhibitor switch (A/T). If cut-off circuit is okay, perform «SET/COAST SWITCH CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
4. If SET/COAST switch circuit is okay, perform «SPEED SENSOR CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If speed sensor circuit is okay, perform «ACTUATOR»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If actuator is okay, replace cruise control module.

1. Turn ignition on. Turn cruise control main switch to ON position. If indicator light illuminates, go to next step. If indicator light does not illuminate, check for blown fuse, open in power supply circuit to main switch or faulty cruise control main switch. If these components are okay, perform «CRUISE CONTROL RELAY»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
2. Perform «POWER SUPPLY CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system__power-supply-circuit) test under TESTING. If power supply circuit is okay, perform «CUT-OFF CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If cut-off circuit is okay, perform «SET/COAST SWITCH CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
3. If SET/COAST switch circuit is okay, perform «SPEED SENSOR CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If speed sensor circuit is okay, perform «ACTUATOR»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If actuator is okay, measure resistance between cruise control module connector terminal No. 8 and terminals No. 9, 10 and 14. (Scheme 6)and (Scheme 7).
4. If resistance is not about 8-45 ohms when measuring between terminals No. 8 and 9, and about 65 ohms when measuring between terminal No. 8 and terminals No. 10 and 14, repair harness. If resistance is as specified, replace cruise control module.

1. Turn ignition on. Turn cruise control main switch to ON position. If indicator light illuminates, go to next step. If indicator light does not illuminate, check main switch. If main switch is okay, perform «CRUISE CONTROL RELAY»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
2. Perform «POWER SUPPLY CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system__power-supply-circuit) test under TESTING. If power supply circuit is okay, go to next step. If power supply circuit is faulty, check brake cancel switch, clutch switch (M/T), inhibitor relay (A/T) and inhibitor switch (A/T).
3. Perform «SET/COAST SWITCH CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If COAST switch circuit is okay, perform «ACTUATOR»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If actuator is okay, perform «SPEED SENSOR CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If speed sensor circuit is okay, replace cruise control module.

SYSTEM WILL NOT DISENGAGE

Note. Use the following procedure if system will not disengage when pressing brake or clutch pedal, or when shifting automatic transmission into Park or Neutral. If system will not disengage when activating CANCEL SWITCH, see CANCEL SWITCH FUNCTION INOPERATIVE .

Perform ACTUATOR test under TESTING. If actuator tests okay, replace cruise control module.

1. If system will not disengage when the brake or clutch (M/T) pedals are pressed or when transmission is placed in Park or Neutral, perform «CUT-OFF CIRCUIT»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING.
2. If cut-off circuit does not test okay, check brake cancel switch, clutch switch (M/T), inhibitor relay (A/T) and inhibitor switch (A/T). If cut-off circuit is okay, perform «ACTUATOR»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If actuator is okay, replace cruise control module.

ENGINE SURGES

Check for loose, cracked or disconnected vacuum hoses. Ensure actuator cable moves smoothly. Repair or replace actuator cable if cable does not move smoothly. If actuator cable moves smoothly, perform ACTUATOR test under TESTING. If actuator is okay, replace cruise control module.

Perform CANCEL SWITCH CIRCUIT (STEERING WHEEL) test under TESTING. If CANCEL switch circuit is okay, replace cruise control module.

RESUME FUNCTION INOPERATIVE

Perform RESUME SWITCH CIRCUIT test under TESTING. If RESUME/ACCEL (RESUME only on Pathfinder and Pickup) switch circuit is okay, replace cruise control module.

ACCEL FUNCTION INOPERATIVE

Note. Only Pathfinder and Pickup have a separate ACCEL switch.

Perform ACCEL SWITCH CIRCUIT test under TESTING. If ACCEL switch circuit tests okay, replace cruise control module.

DIFFERENCE BETWEEN SET SPEED & ACTUAL SPEED

Check actuator cable for smoothness of operation. Replace actuator cable if cable does not move smoothly. If actuator cable moves smoothly, check for loose, cracked or disconnected vacuum hoses. If vacuum hoses are okay, perform ACTUATOR test under TESTING. If actuator is okay, replace cruise control module.

OVERDRIVE CANCEL FUNCTION INOPERATIVE

Note. Symptoms of inoperative overdrive cancel function include

1. When cruise control is set and transmission is in overdrive, overdrive is canceled and it is not possible to shift back into overdrive.
2. Overdrive will not be canceled, even if actual speed is 4 MPH lower than set speed (set speed cannot be maintained).
3. Overdrive will not be canceled, even if accelerator switch is on.

Except Maxima

Perform OVERDRIVE CANCEL CIRCUIT (A/T) test under TESTING. If overdrive cancel circuit is okay, replace cruise control module.

EXCESSIVELY DELAYED ENGAGEMENT

Note. Some delay of engagement is normal.

Check adjustment of actuator cable. See ACTUATOR CABLE under ADJUSTMENTS. Ensure actuator cable moves smoothly. Replace actuator cable if cable does not move smoothly. Check for loose, cracked or disconnected vacuum hoses. If vacuum hoses are okay, perform ACTUATOR test under TESTING. If actuator is okay, replace cruise control module.

NX, Sentra, 240ZX & 300ZX

1. If indicator light blinks when cruise control main switch is turned to ON position again, go to step 3). If indicator light blinks when brake pedal is pressed slowly, adjust brake cancel and brakelight switches. See BRAKE CANCEL, BRAKELIGHT & CLUTCH SWITCHES under «ADJUSTMENTS»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system).
2. If indicator light does not blink when brake pedal is pressed slowly, check steering switch. If steering switch is okay, replace cruise control module.
3. Perform «ACTUATOR»(/nissan/stanza/iii-1990-1992/remont/cruise-control-systems/#cruise-control-system) test under TESTING. If actuator is okay, measure voltage between cruise control module connector terminals No. 3 and 8. If voltage is present, check wiring harness. If no voltage is present, disconnect cruise control module connector.
4. Measure resistance between cruise control module connector terminal No. 8 and terminals No. 9, 10 and 14. (Scheme 6)and (Scheme 7). If resistance is not about 8-45 ohms between terminals No. 8 and 9, and about 65 ohms between terminal No. 8 and terminals No. 10 and 14, repair harness. If resistance is as specified, replace cruise control module.

WIRING DIAGRAMS

For 1992 model wiring diagrams, see appropriate chassis WIRING DIAGRAMS article in the WIRING DIAGRAMS section.

See also:
• SYSTEM COMPONENT
• RESUME SWITCH CIRCUIT
• POWER SUPPLY CIRCUIT