Scantool Diagnostics
Automatic Transaxle
P0641 Sensor Reference Voltage 'A' Circuit/Open - Scantool Diagnostics
Monitor Scantool Data
1. Connect scantool to Diagnostic Connector.
2. Ignition "ON" & Engine "OFF".
3. Confirm the "Battery Voltage, Ignition Key Status, Main Relay Voltage, parameter on the scan tool.
Fig 1) Main relay and Battery voltage (Idle status)
Fig 2) Main relay and Battery voltage (Ignition "ON")
4. Is "Battery Voltage" output value within normal range?