Wastegate Bypass Regulator Valve, Checking
Wastegate Bypass Regulator Valve, Checking
Observe all safety precautions: => [ Safety Precautions ] Safety Precautions
View clean working conditions: => [ Clean Working Conditions ] Clean Working Conditions
Prior to repair work, perform a preliminary check to verify the condition. Refer to => [ Preliminary Check ] Preliminary Check.
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools, testers and auxiliary items required
• Multimeter.
• Wiring diagram.
Test requirements
• The Engine Control Module (ECM) (J623) fuses OK.
• Battery voltage at least 12.5 volts.
• All electrical consumers such as, lights and rear window defroster, switched off.
• On vehicles with automatic transmission, selector lever in position "P" or "N".
• A/C switched off.
• Ground connections between engine/transmission/chassis OK.
• Ignition switched Off.
Start diagnosis
- Remove the engine cover with air filter. Refer to the Repair Information.
Checking internal resistance
- Disconnect the Wastegate Bypass Regulator Valve (N75) electrical harness connector.
- Using a multimeter, check the Wastegate Bypass Regulator Valve (N75) terminals 1 to 2 for resistance.
Specified value: 12 to 18 ohms (at approx. 20° C)
If the specified value was Not obtained:
- Replace the Wastegate Bypass Regulator Valve (N75) Refer to the Repair Information.
If the specified value was obtained:
Checking Voltage supply
- Start the engine.
- Using a multimeter, check the Wastegate Bypass Regulator Valve (N75) electrical harness connector terminal 1 to engine ground.
Specified value: Battery voltage.
- Switch the ignition Off.
If the specified value was Not obtained:
- Check the wiring for a short circuit to ground, high resistance or an open circuit.
- Check fuse 23 (2010 Model) or fuse 5 (2011> Model) in Fuse Panel B for open and replace if blown. Refer to Wiring Diagrams for fuse locations.
- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
- If necessary, repair the wiring connection.
If the specified value was obtained:
If the manufacturers test box is being used, perform the following step.
- Install the test box.
If the manufacturers test box is not being used, perform the following step.
- Remove the Engine Control Module (ECM) (J623).
- Using a multimeter, check the Wastegate Bypass Regulator Valve (N75) electrical harness connector terminal to the Engine Control Module (ECM) (J623) electrical harness connector terminal for an open circuit.
Specified value: 1.5 ohms max.
If the specified value was Not obtained:
- Check the wiring for an open or high resistance.
- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
- If necessary, repair the faulty wiring connection.
If no malfunction is detected in the wiring and if the voltage supply was OK:
- Replace the Engine Control Module (ECM) (J623). Refer to the Repair Information.
- Install the engine cover with air filter. Refer to the Repair Information.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Modes 01 - 09.
2. If necessary, erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Modes 01 - 09.
3. If the DTC memory was erased, generate readiness code. Refer to => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes.