Cruise Control Unit Input Test
SRS components are located in this area.
Review the SRS component locations, and
precautions and procedures, before performing repairs or service.
| 1. | Disconnect the 14P connector from the control unit.
|
| 2. | Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose, or corroded, repair them as necessary, and recheck the system.
- If the terminals look OK, go to 3.
|
| 3. | With the 14P connector disconnected, make these input tests.
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained |
|---|
| 1 | BRN/WHT | Connect battery power | Check the operation of the magnetic clutch: Clutch should click and output link should be locked. | - Faulty actuator
- Poor ground (G201)
- An open in the wire
- Short to ground
| | 2 | BLU | Ignition switch ON (II), main switch ON and brake pedal pressed, then released | Check for voltage to ground:
There should be 0 V with the pedal pressed and battery voltage with the pedal released. | - Faulty brake pedal position switch
- An open in the wire
- Open in cruise control main switch
- Blown No.4 (10A) fuse in the under-dash fuse/relay box
| | 3 | BLK | Under all conditions | Check for continuity to ground:
There should be continuity. | - Poor ground (G501)
- An open in the wire
| | 4 | GRN/YEL | Ignition switch ON (II) | Check for voltage to ground:
There should be battery voltage. | - Blown No. 4 (10 A) fuse in the under-dash 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
|
| Cavity | Wire | Test condition | Test: Desired result | Possible cause if result is not obtained |
|---|
| 6 | GRY/RED | Set button pushed | Check for voltage to ground: There should be battery voltage.
When testing terminal No. 6, there should be no voltage on terminal No. 7. | - 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 | Check for voltage to ground: There should be battery voltage.
When testing terminal No. 7, there should be no voltage on terminal No. 6. | | 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 No. 10 (7.5 A) fuse in the under-dash fuse/relay box
- Faulty 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
- Short to ground
| | 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 | WHT/GRN (A/T)
LT BLU
(M/T) | A/T: Shift lever in [D] or [D3]
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: G501, A/T: G101)
- An open in the wire
| | 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 | - Loose connection at the PCM
- Faulty cruise control unit
- Short to ground
|
|
| 4. | 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 may be faulty. Substitute a known-good control unit and retest. If the system works properly, replace the control unit.
|
