Cruise Control

Control Unit Input Test (cont'd)

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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

  1. 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.