3.
Has a problem been found?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection" procedure. |
Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
Ignition Switch "OFF"
Refer to "Shop Manual" and disconnect the lambda sensor unit connector.
Ignition Switch "ON"
Measure voltage of Pin No. 2 of the lambda sensor unit connector and chassis ground.
Specification : B+
Is the measured value within specification?
| ▶ Go to "Control Circuit Inspection" procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
Ignition Switch "OFF"
Refer to "Shop Manual" and disconnect the lambda sensor unit connector.
Connect VMI to GDS and select oscilloscope.(2 Channel)
Channel A (+) : Pin No. 5(Heater Control) connector (On Lambda Sensor Connector)
Channel A (-) : Ground
Ignition Switch "ON"
Specification : Average Voltage : Approx. 3.3V
Max Voltage : Approx. 3.6V
Min Voltage : Approx. 0V
Duty (-) : Approx 2%
Is the measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
