WASTEGATE Bypass Regulator Valve, Checking
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test requirements
- The 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.
Test procedure
-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Start diagnosis
-- Remove the engine cover with air filter.
Checking internal resistance
-- Disconnect the Wastegate Bypass Regulator Valve -N75- electrical harness connector -1-.
-- Using a multimeter, check the Wastegate Bypass Regulator Valve -N75- terminals 1 to 2 for resistance.
Specified value: 20 to 30 Ω (at approx. 20° C)
If the specified value was Not obtained:
-- Replace the Wastegate Bypass Regulator Valve -N75-.
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.
| Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal: | Measure to: |
|---|---|
| 1 | 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 to Fuse (Refer to applicable wiring diagram for fuse positions).
-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-- If necessary, repair the wiring connection.
If the specified value was obtained:
-- Remove the Engine Control Module -J623-.
-- Using a multimeter, check the Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal to the Engine Control Module -J623- electrical harness connector T60 for an open circuit.
| Wastegate Bypass Regulator Valve -N75- electrical harness connector terminal: | Engine Control Module -J623- electrical connector T60 terminal: |
|---|---|
| 2 | 3 |
Specified value: 1.5 Ω 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 -J623-.
-- Install the engine cover with air filter.
Final procedures
After the repair work, the following work steps must be performed in the following sequence:
- Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
- If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
- If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .