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DTC P006E: Turbocharger Wastegate Actuator Supply Voltage Circuit Low Voltage
 
 
 
 
CIRCUIT OPERATION
Power is supplied from the MFI relay to the ECM terminal WGMB.
 
 
TECHNICAL DESCRIPTION
ECM checks the turbocharger wastegate actuator control motor supply voltage for abnormal conditions.
 
 
DESCRIPTIONS OF MONITOR METHODS
Turbocharger wastegate actuator source voltage is smaller than the specified value.
 
 
MONITOR EXECUTION
  • Continuous
 
 
MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC set in memory for the item monitored below)
  • Not applicable
Sensor (The sensor below is determined to be normal)
  • Not applicable
 
 
DTC SET CONDITIONS
Logic Flow Chart
Check Conditions
  • More than 2 seconds have passed since the engine starting sequence was completed.
  • Battery positive voltage is more than 8.3 volts.
Judgment Criterion
  • Supply voltage for turbocharger wastegate actuator control motor is less than 6 volts for 2 seconds.
 
 
FAIL-SAFE AND BACKUP FUNCTION
  • Stop driving the turbocharger wastegate actuator control motor.
  • Torque is restricted.
 
 
OBD-II DRIVE CYCLE PATTERN
  • Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
 
 
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
  • Blown fuse.
  • Open or shorted turbocharger wastegate actuator control motor power supply circuit, harness damage or connector damage.
  • ECM failed.

 
 
DIAGNOSIS
STEP 1. Measure the power supply voltage at ECM harness side connector.
(1) Disconnect the ECM connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal WGMB and ground.
  • Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is battery positive voltage (approximately 12 volts) present?
Go to Step 3.
Go to Step 2.
 
STEP 2. Check the power supply fuse.
Is the fuse in good condition?
Repair the connector(s), or check and repair of open circuit in WGMB line between MFI relay connector and ECM connector. Then go to Step 5.
Replace the fuse. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - Inspection Service Points for a Blown Fuse . Then go to Step 5.
 
STEP 3. Check of harness damage in WGMB line between MFI relay connector and ECM connector.
Is the harness wire in good condition?
Go to Step 4.
Repair the connector(s) or wiring harness. Then go to Step 5.
 
STEP 4. Check the trouble symptoms.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
(2) Check the diagnostic trouble code (DTC).
Is DTC P006E set?
Replace the ECM (Refer to Removal and Installation ). Then go to Step 5.
It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .
 
STEP 5. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 .
(2) Check the diagnostic trouble code (DTC).
Is DTC P006E set?
Retry the troubleshooting.
The inspection is complete.