FixVault
Home › Chevrolet › 1998 › Tracker 4D Utility, RWD › Repair and Diagnosis › Accessories & Equipment › Cruise Control Systems › System Tests › Cruise Control System › Diagnostic Procedures

Diagnostic Procedures

  1. Turn ignition switch to ON position. Depress cruise control on/off switch to ON position. If cruise control on/off switch CRUISE CTRL indicator illuminates, go to next step. If cruise control on/off switch indicator does not illuminate, go to step 9).
  2. Drive vehicle at a speed greater than 25 MPH. Rotate COAST/SET switch counterclockwise one time and release. See Figure . If cruise control engages and CRUISE indicator located in instrument cluster illuminates, go to next step. If cruise control engages and CRUISE indicator does not illuminate, go to step 13). If cruise control does not engage, go to step 15).
  3. Rotate RESUME/ACCEL switch clockwise and hold until vehicle speed increases 4-5 MPH. See Figure . Release switch. If vehicle accelerates and maintains a new higher set speed, go to next step. If vehicle speed does not increase, go to step 18).
  4. Rotate COAST/SET switch counterclockwise and hold until vehicle speed decreases 4-5 MPH. See Figure . Release switch. If vehicle speed decreases and vehicle maintains a new lower set speed (greater than 25 MPH), go to next step. If vehicle speed does not decrease, replace cruise control actuator.
  5. Slightly depress brake pedal. If cruise control disengages and CRUISE indicator light goes out, go to next step. If cruise control does not disengage, go to step 19).
  6. Rotate RESUME/ACCEL switch clockwise one time and release. See Figure . If vehicle accelerates to and maintains previous set speed, go to next step. If vehicle will not accelerate to and/or maintain previously set speed, replace cruise control actuator.
  7. Depress CANCEL switch. See Figure . If cruise control disengages and CRUISE indicator goes out, go to next step. If cruise control does not disengage, replace cruise control mode switch.
  8. Push cruise control on/off switch to OFF position. If cruise control on/off switch CRUISE CTRL indicator goes out and cruise control set speed memory is erased, cruise control system is operating properly. If CRUISE CTRL indicator does not go out, replace cruise control actuator.
  9. Disconnect cruise control on/off switch connector. Cruise control on/off switch is located in instrument panel. Connect voltmeter between connector terminal No. 1 (Black/White wire) and ground. Turn ignition switch to ON position and measure voltage. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open in Black/White wire between fuse block No. 2 and cruise control on/off switch. Fuse block No. 2 is located under left side of instrument panel.
  10. Turn ignition switch to LOCK position. Reconnect cruise control on/off switch connector. Disconnect cruise control actuator 12-pin connector. Using voltmeter, measure voltage between cruise control actuator 12-pin connector terminal No. 8 (Light Green wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . Turn ignition on and depress cruise control on/off switch. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, replace cruise control on/off switch.
  11. Turn ignition on. Using voltmeter, measure voltage between cruise control actuator 12-pin connector terminal No. 12 (Blue/Black wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, repair open in Blue/Black wire between main harness connector located near blower speed selector switch and cruise control actuator.
  12. Using an ohmmeter, measure resistance between cruise control actuator 12-pin connector terminal No. 5 and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . If resistance is less than 0.5 ohm, replace cruise control actuator. If resistance is more than 0.5 ohm, repair open in Black wire between cruise control actuator and ground located behind center of instrument panel at bulkhead.
  13. Stop vehicle and turn ignition switch to LOCK position. Disconnect cruise control actuator 12-pin connector. Connect a fused jumper wire between actuator 12-pin connector terminal No. 4 (Gray wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . Turn ignition switch to ON position. If CRUISE indicator does not illuminate, go to next step. If CRUISE indicator illuminates, replace cruise control actuator.
  14. Turn ignition switch to LOCK position. Disconnect instrument cluster 16-pin connector. Using ohmmeter, measure resistance between instrument cluster 16-pin connector terminal No. 4 (Gray wire) and ground. If resistance is less than 0.5 ohm, repair or replace instrument cluster printed circuit board. If resistance is 0.5 ohm or more, repair Gray wire.
  15. Stop vehicle and turn ignition switch to LOCK position. Disconnect cruise control actuator 12-pin connector. Connect voltmeter between actuator 12-pin connector terminal No. 6 (Yellow/Green wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . Turn ignition switch to ON position and measure voltage. If voltage is less than 10 volts, go to next step. If voltage is 10 volts or more, go to step 17).
  16. Disconnect brake switch at brake pedal. Using voltmeter, backprobe switch terminal No. 4 (Yellow/Green wire) to ground. If voltage is less than 10 volts, replace brake switch. If voltage is more than 10 volts, repair open in Yellow/Green wire between brake switch and cruise control actuator.
  17. Turn ignition switch to LOCK position. Connect ohmmeter between cruise control actuator 12-pin connector terminal No. 9 (Blue wire on M/T; Black/Red wire on A/T) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION table. Apply parking brake. On A/T models, place selector lever in Drive. On M/T models, ensure clutch pedal is released. If resistance is less than 0.5 ohm, repair short to ground in Red/Black wire between actuator and Park/Neutral Position (PNP) switch on A/T models, or short to ground in Blue Wire on M/T models. On all models, if resistance is 0.5 ohm or more, replace cruise control actuator.
  18. Turn ignition switch to LOCK position. Connect ohmmeter between cruise control actuator 12-pin connector terminal No. 8 (Light Green wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . Rotate and hold mode switch in RESUME/ACCEL position. Measure resistance. If resistance is between 900-970 ohms, replace cruise control actuator. If resistance is less than 900 ohms, or more than 970 ohms, replace cruise control on/off switch.
  19. Turn ignition switch to LOCK position. Connect voltmeter between cruise control actuator 12-pin connector terminal No. 2 (Green/White wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION  . Depress and hold brake pedal. Measure voltage. If voltage is more than 10 volts, go to next step. If voltage is less than 10 volts, repair open in Green/White wire between actuator and brake light switch.
  20. Connect voltmeter between cruise control actuator 12-pin connector terminal No. 6 (Yellow/Green wire) and ground. See ACTUATOR CONNECTOR TERMINAL IDENTIFICATION table. Depress brake pedal and measure voltage. If voltage is less than 10 volts, replace cruise control actuator. If voltage is more than 10 volts, replace brake light switch.
ACTUATOR CONNECTOR TERMINAL IDENTIFICATION (1)

Terminal No. (Wire Color) Circuit Function
1 (YEL) Vehicle Speed Sensor Input
2 (GRN/WHT) Brake Signal
3 (PNK/GRN) Overdrive Cut Control - A/T
4 (GRY) CRUISE Indicator Light
5 (BLK) Ground
6 (YEL/GRN) Cruise Interrupt Signal
7 (PNK/BLU) TP Sensor Signal
8 (LT GRN) Mode Signal
9 (BLU) Cruise Cancel - M/T
9 (BLK/RED) Cruise Cancel - A/T
10 (LT GRN/WHT) ON/OFF Indicator Control
11 (-) Not Used
12 (BLU/BLK) Ignition Start Signal
(1) See Fig 1 .
Fig 1: Identifying Cruise Control Actuator Connector Terminals
G98I00727
About FixVault