3.
Is the problem found?
 | ▶ Repair the trouble causing part and go to "Verification of Vehicle Repair". |
 | ▶ with M/T : Go to "Power Circuit Inspection". ▶ with A/T : Go to "Signal Circuit Inspection". |
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge of component.
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking device and connecting condition between terminal and wiring.
Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. (after checking, reconnect the pin at correct position.)
Is the problem found?
| ▶ Repair the trouble causing part and go to "Verification of Vehicle Repair". |
| ▶ with M/T : Go to "Power Circuit Inspection". ▶ with A/T : Go to "Signal Circuit Inspection". |
Check power circuit voltage
IG KEY "OFF", ENGINE "OFF".
Disconnect Vehicle Speed Sensor connector.
IG KEY "ON".
Measure the voltage between signla terminal of VSS harness connector and chassis ground.
Secification : 11.5V~13.0V
Is the measured voltage within the specification?
| ▶ Go to "Signal Circuit Inspection". |
| ▶ Repair poor connection or open in joint connector and go to "Verification of Vehicle Repair". |
Check signal circuit voltage at sensor side
IG KEY "OFF", ENGINE "OFF".
Disconnect VSS connector.
IG KEY "ON".
Measure the voltage between signal terminal of ECM harness connector and chassis ground.
Specification :8.0V~11.5V
Is the measured voltage within the specification?
| ▶ Go to "Ground Circuit Inspection". |
| ▶ Repair poor connection or open in signal terminal of ECM harness connector and go to "Verification of Vehicle Repair". |
IG KEY "OFF", ENGINE "OFF".
Disconnect VSS connector.
IG KEY "ON".
Measure the voltage between signal terminal of VSS harness connector and chassis ground. [ TEST "A" ]
Measure the voltage between signal terminal and ground terminal of VSS harness connector. [ TEST "B" ]
(Signal terminal : Check + prove , Ground terminal : Check - prove)
Specification :[TEST "A"] Voltage - [TEST "B"] Voltage = below 200mV
Is the measured voltage within the specification?
| ▶ Go to "Component Inspection". |
| ▶ When "B" voltage is not detected : Repair open in ground circuit and go to "Verification of Vehicle Repair" ▶ When the voltage difference between "A" and "B" is above 200mV : Eliminate the causes of excessive resistance and go to "Verification of Vehicle Repair". |
