Cruise Control Unit Input Test
- Disable air bag system. See AIR BAG RESTRAINT SYSTEM article. Remove instrument panel lower cover and knee bolster. Turn ignition switch to OFF position. Disconnect cruise control unit Gray 14-pin connector. See Fig 1 . Ensure connector terminals are not bent, loose or corroded. Repair as necessary and recheck system.
- Using a fused jumper wire, connect battery voltage to cruise control unit Gray 14-pin connector terminal No. 1 (Brown/White wire). See CRUISE CONTROL UNIT CONNECTOR TERMINAL ID table. If cruise control actuator magnetic clutch clicks and output linkage locked, go to next step. If actuator clutch does not click and/or output linkage does not lock, check cruise control actuator. See procedures under CRUISE CONTROL ACTUATOR ASSEMBLY . Check for an open, or loose or disconnected terminals in Black wire between cruise control actuator and ground connection. Check for an open, or loose or disconnected terminals in Brown/White wire between cruise control unit and actuator. See WIRING DIAGRAM .
- Using a fused jumper wire, connect battery voltage to cruise control unit Gray 14-pin connector terminal No. 8 (Brown wire). Using another jumper wire, ground connector terminal No. 10 (Brown/Black wire). If cruise control actuator motor can be heard operating, go to step 5). If actuator motor does not operate, check cruise control actuator. See CRUISE CONTROL ACTUATOR ASSEMBLY . Check for an open, or loose or disconnected terminals in Brown wire or Brown/Black wire between cruise control unit and cruise control actuator. See WIRING DIAGRAM .
- Turn ignition switch to ON position. Push cruise control main switch to ON position. Depress and release brake pedal. Using voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 2 (Gray wire) and ground. Battery voltage should exist when brake pedal is released and zero volts should exist when brake pedal is depressed. If voltage is as specified, go to next step. If voltage is not as specified, check brakelight switch. See BRAKELIGHT SWITCH . Check for an open, or loose or disconnected terminals in Gray wire between cruise control unit and brakelight switch. See WIRING DIAGRAM .
- Turn ignition switch to OFF position. Using an ohmmeter, check for continuity between cruise control unit Gray 14-pin connector terminal No. 3 (Black wire) and ground. If continuity exists, go to next step. If continuity does not exist, check for an open, or loose or disconnected terminals in Black wire between cruise control unit and ground connection located behind left kick, below hood release. See WIRING DIAGRAM .
- Using a voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 4 (Green/White wire) and ground. Depress and release brake pedal. Battery voltage should exist when brake pedal is depressed and zero volts should exist when brake pedal is released. If voltage is as specified, go to next step. If voltage is not as specified, check brakelight switch. See procedures under BRAKELIGHT SWITCH . Check for an open, or loose or disconnected terminals in Green/White wire between cruise control unit and brakelight switch. See WIRING DIAGRAM .
- Using a voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 5 (Light Green/Red wire) and ground. Depress SET button. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 30 (20-amp), located in engine compartment fuse/relay box. Check SET/RESUME/CANCEL switch. See SET/RESUME/CANCEL SWITCH . Check horn relay and clockspring. Check for an open, or loose or disconnected terminals in Light Green/Red wire between cruise control unit and clockspring. See WIRING DIAGRAM .
- Using a voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 6 (Light Green/Black wire) and ground. Depress RESUME button. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 30 (20-amp), located in engine compartment fuse/relay box. Check SET/RESUME/CANCEL switch. See SET/RESUME/CANCEL SWITCH . Check horn relay and clockspring. Check for an open, or loose or disconnected terminals in Light Green/Black wire between cruise control unit and clockspring. See WIRING DIAGRAM .
- Turn ignition switch to ON position. Using jumper wire, ground cruise control unit Gray 14-pin connector terminal No. 9 (Blue/Black wire). If instrument cluster cruise indicator light illuminates, go to next step. If cruise indicator light does not illuminate, check bulb. Check fuse No. 1 (10-amp) in fuse/relay box under instrument panel. Check dimming circuit. See INSTRUMENT PANEL article or TESTS W/CODES article in the ENGINE PERFORMANCE section. Check for an open, or loose or disconnected terminals in Blue/Black wire between cruise control unit and instrument cluster. See WIRING DIAGRAM .
- Turn ignition switch to ON position. Using a voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 11 (Black/Yellow wire) and ground. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 4 (15-amp) in fuse/relay box located under instrument panel. Check for an open, or loose or disconnected terminals in Black/Yellow wire between cruise control unit and fuse No. 4. See WIRING DIAGRAM .
- Raise and support front of vehicle. Turn ignition switch to ON position. Push cruise control main switch to ON position. Connect analog voltmeter positive lead to cruise control unit Gray 14-pin connector terminal No. 12 (Orange wire) and negative lead to terminal No. 3 (Black wire). Block one front wheel, slowly rotate opposite wheel and measure voltage. Voltage should pulse between zero and 5 volts or more. If voltage is as specified, go to next step. If voltage is not as specified, check Vehicle Speed Sensor (VSS). See procedures in the INSTRUMENT PANEL article or in TESTS W/CODES article in the ENGINE PERFORMANCE section. Check for an open, or loose or disconnected terminals in Orange wire between cruise control unit and VSS. Check for an open, or loose or disconnected terminals in Black wire between cruise control unit and ground connection located behind left kick panel, under hood release.
- Turn ignition switch to ON position. Push cruise control main switch to ON position. Using a voltmeter, measure voltage between cruise control unit Gray 14-pin connector terminal No. 13 (Light Green wire) and ground. If battery voltage exists, go to next step. If battery voltage does not exist, check fuse No. 4 (15-amp) in fuse/relay box located under instrument panel. Check main switch. See MAIN SWITCH. Check for an open, or loose or disconnected terminals in Light Green wire between cruise control unit and cruise control main switch. See WIRING DIAGRAM .
- Turn ignition switch to OFF position. Using an ohmmeter, check for continuity between cruise control unit Gray 14-pin connector terminal No. 14 (Pink wire) and ground. Move gearshift lever to "2", "D3" or "D4" positions. Continuity should exist with gearshift lever in any specified position. Continuity should not exist in any other position. If continuity is as specified, replace cruise control unit and recheck system. If continuity is not as specified, check gearshift position switch. See GEARSHIFT POSITION SWITCH . Check for an open, or loose or disconnected terminals in Pink wire between cruise control unit and gearshift position switch. See WIRING DIAGRAM .
CRUISE CONTROL UNIT CONNECTOR TERMINAL ID
| Terminal No. (Wire Color) | Circuit | |
|---|---|---|
| Gray 14-Pin Connector | ||
| 1 (BRN/WHT) | Actuator Control | |
| 2 (GRY) | Brakelight Switch Input | |
| 3 (BLK) | Ground | |
| 4 (GRN/WHT) | Brakelight Switch Input | |
| 5 (LT GRN/RED) | SET/DECEL Input | |
| 6 (LT GRN/BLK) | RESUME/ACCEL Input | |
| 7 | Not Used | |
| 8 (BRN) | Actuator Control | |
| 9 (BLU/BLK) | Cruise Control Indicator Control | |
| 10 (BRN/BLK) | Actuator Control | |
| 11 (BLK/YEL) | Power Input | |
| 12 (ORG) | VSS Input | |
| 13 (LT GRN) | Power Input | |
| 14 (PNK) | Disengage Input (Gearshift Lever Position) | |