With Voltmeter

Fig. 6 Cruise Control Harness Connector Terminal Identification:

Disconnect harness connector, Fig. 6, from cruise control unit and use a voltmeter to perform connector terminal tests.

Connector Terminals 1 & Ground
Condition Drive Vehicle Above 20 mph In D, 3, Or 2
Result Battery Voltage
Area To Check If Result Not Obtained Check For No Signal Condition At Cruise Control Switch

Connector Terminals 1 & Ground
Condition Ignition Switch On. Bridge Fuse S51 With Jumper, Turn On Cruise Control
Result Battery Voltage
Area To Check If Result Not Obtained Fuse & Cruise Control Switch Wiring

Connector Terminals 1 & 8
Condition Cruise Control On
Result Battery Voltage
Area To Check If Result Not Obtained Control Unit Ground

Connector Terminals 1 & 3
Condition Cruise Control On
Result Battery Voltage
Area To Check If Result Not Obtained Brake Switch, Cruise Control Switch & Brake Light Ground

Connector Terminals 1 & 3
Condition Cruise Control On
Result 0 V
Area To Check If Result Not Obtained Brake Pedal Switch & Wiring

Connector Terminals 1 & 3
Condition Cruise Control Off
Result 0 V
Area To Check If Result Not Obtained Cruise Control Switch & Wiring

Connector Terminals 6 & 8
Condition Press RESUME
Result Battery Voltage
Area To Check If Result Not Obtained Cruise Control Switch & Wiring

Connector Terminals 2 & 8
Condition Cruise Control On, Select SET
Result Battery Voltage
Area To Check If Result Not Obtained Cruise Control Switch & Wiring

Connector Terminals 5 & 8
Condition Cruise Control On, Raise Front Wheel & Rotate By Hand In Driving Direction
Result 0-10.5 V
Area To Check If Result Not Obtained VSS, Speedometer, Voltage Stabilizer For Instruments & Wiring

Connector Terminals No Voltmeter Connections
Condition Ignition Switch ON But Do Not Start Engine. Cruise Control On. Install Jumpers Between Terminals (7 & 8), (8 & 4) & (1 & T2 Black/Blue Wire Terminal)
Result Throttle Opens Fully
Area To Check If Result Not Obtained Vacuum Servo & Vacuum Circuit For Leakage

Connector Terminals No Voltmeter Connections
Condition Depress Brake Pedal (Jumpers Remain Connected)
Result Throttle Closes
Area To Check If Result Not Obtained Brake Vent Switch

Connector Terminals No Voltmeter Connections
Condition Release Brake Pedal (Jumpers Remain Connected)
Result Throttle Opens Fully
Connector Terminals No Voltmeter Connections
Condition Remove Jumper Between 8 & 4
Result Pump Shuts Off & Throttle Stays Open
Area To Check If Result Not Obtained Vacuum Servo & Vacuum Circuit For Leakage

Connector Terminals No Voltmeter Connections
Condition Remove Remaining Jumpers
Result Throttle Closes Smoothly
Area To Check If Result Not Obtained Vacuum Pump Motor

Connector Terminals No Voltmeter Connections
Condition DTC
Result Related Component
Area To Check If Result Not Obtained Fault Indication