P0643
DTC P0643 SENSOR POWER SUPPLY
On Board Diagnosis Logic
FAIL-SAFE MODE
DTC Confirmation Procedure
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to "Diagnostic Procedure" below.
Wiring Diagram
EC-SEN/PW-01:
Diagnostic Procedure
Step 1:
Step 2-5:
