BE/Body Electrical Systems — Matrix Chart of Problem Symptoms, page 170

BE–170
BODY ELECTRICAL SYSTEM – CRUISE CONTROL SYSTEM

MATRIX CHART OF PROBLEM SYMPTOMS

The table below will be useful for you in troubleshooting these electrical problems. The most likely causes of the malfunction are shown in the order of their probability. Inspect each part in the order shown, and replace the part when it is found to be faulty.

See page
IN-35  BE-171  BE-197  BE-179  BE-182  BE-191  BE-189  BE-177  BE-184  IN-30  BE-165

Inspection Item
Cruise Control ECU  Actuator  Main Switch (in Control Switch)  Control Switch  Stop Light Switch  Clutch Switch or Park/Neutral Position Switch  Parking Brake Switch  Vehicle Speed Sensor  Speed Control Cable Function  Throttle Position Sensor (IDL)  Wire Harness  Indicator Light

Diagnosis Trouble Code
Problem  Type A  Type B

• "CRUISE" Indicator light blinks.
• Cruise control system does not set.
• Cruse control system does not operate.

11        3  2                          1
12        4  2        3                 1
13        3  2                          1
14  –     3  2                          1
21  –     3                    2        1
23  –     4              2  3           1
32        3        2                    1
34        3        2                    1
41        1                             1
42  –     Source voltage drop

Indicator light does not light up
        3                                   1  2

Large speed drop when the cruise control switch turned to SET.
        4  3                          1  2

Vehicle speed fluctuates when cruise control switch turned to SET.
        4  3                          1  2

Set speed deviates on high or low side.
        4  3                    1  2

Acceleration response is sluggish when cruise control switch turned to "ACCEL" or "RESUME"
        5  4        3              2  1

Cruise control system does not set.
Cruise control system does not operate.
4  OK  9  8  2  3  4  5  6     7     1
   NG  2                    1

Set speed does not cancel when brake pedal depressed.
3  OK  1
   NG  2              1

Set speed does not cancel when parking brake lever pulled.
3  OK  1
   NG  2                 1

Cruise control not cancelled, even when transmission is shifted to EXCEPT D RANGE.
3  OK  1
   NG  2              1

Set speed does not cancel when clutch pedal depressed.
3  OK  1
   NG  2           1

Set speed does not cancel when cruise control switch turned to CANCEL.
3  OK  1
   NG  2           1

Vehicles speed does not decrease when cruise control switch turned to COAST.
1  OK  4  1                    3  2
   NG  2           1

Vehicle speed does not accelerate when cruise control switch turned to ACCEL.
2  OK  4  1                    3  2
   NG  2           1

Vehicle speed does not return to memorized cruise when control switch turned to RESUME.
2  OK  4  1                    3  2
   NG  2           1

Speed can be set below about 40 km/h (25 mph.)
4  OK  1
   NG  2                 1

Cruise control does not disengage even at about 40 km/h (25 mph) or less.
4  OK  2  1
   NG  2                 1