## Cruise Control

#### Control Unit Input Test (cont'd)

4-45

Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained
4 | BLK/ORN | Ignition switch ON (II) | Check for voltage to ground: There should be battery voltage. |

- Blown No. 4 (10 A) fuse in the under-dash driver's fuse/relay box
- An open in the wire

5 | WHT/BLK | Brake pedal pressed, then released | Check for voltage to ground: There should be battery voltage with the pedal pressed, and 0 V with the pedal released. |

- Blown No. 7 (15 A) fuse in the under-hood fuse/relay box
- Faulty brake pedal position switch
- An open in the wire

6 | GRY/RED | Set button pushed | Check for voltage to ground: There should be battery voltage. |

- Blown No. 7 (15 A) fuse in the under-hood fuse/relay box
- Faulty horn relay
- Faulty set/resume/cancel switch
- Faulty cable reel
- An open in the wire

7 | LT GRN/BLK | Resume button pushed
8 | BLU/ORN | Reconnect the cruise control unit 14P connector, start the engine, turn the main switch ON and drive the vehicle to speeds over 25 mph (40 km/h) with the cruise control set. | Check for voltage to ground: There should be about 1V |

- Faulty cruise control unit
- Short to ground

9 | BRN | Connect battery power to the BRN terminal and ground to the BRN/YEL terminal | Check the operation of the actuator motor: You should be able to hear the motor |

- Faulty actuator
- An open in the wire

11 | BRN/YEL
10 | BLU/YEL | Ignition switch ON (II) | Attach to ground: Cruise indicator light in the gauge assembly should comes on. |

- Blown bulb
- Blown No. 10 (7.5 A) fuse in the under-dash fuse/relay box
- Faulty dimming circuit in the gauge assembly
- An open in the wire

12 | BLU/WHT | Ignition switch ON (II) and main switch ON; raise the front of the vehicle, and rotate one wheel slowly while holding the other wheel | Check for voltage between the BLU/WHT (+) and BLK (-) terminals: There should be 0 5 V or more repeatedly. |

- Faulty ECM/PCM
- An open in the wire

13 | LT GRN | Ignition switch ON (II) and main switch ON | Check for voltage to ground: There should be battery voltage. |

- Blown No. 4 (10 A) fuse in the under-dash fuse/relay box
- Faulty main switch
- An open in the wire

14 | LT BLU | A/T: Shift lever in or M /T: Clutch pedal released | Check for continuity to ground: There should be continuity. NOTE: There should be no continuity when the clutch pedal is pressed or when the shift lever is in other positions. |

- Faulty transmission range switch
- Faulty clutch pedal position switch
- Poor ground (M/T: G401, A/T: G101)
- An open in the wire

5. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty; replace it.