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 perform the following before conducting the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 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 1-2:
Step 2 (Continued)-6:
