Camshaft Adjustment Valve, Checking
Special Tools And Workshop Equipment Required
- Multimeter.
- Wiring diagram.
Test Requirements
- The Camshaft Adjustment Valve 1 -N205- fuse OK.
- Engine Control Module (ECM) Power Supply Relay -J271- OK, checking.
- Battery voltage at least 12.5 volts.
- All electrical consumers such as, lights and rear window defroster, switched off.
- Vehicles with automatic transmission, shift selector lever into 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.
-- Disconnect Camshaft Adjustment Valve 1 -N205- electrical harness connector.
-- Using a multimeter, check the Camshaft Adjustment Valve 1 -N205- for resistance.
Specified Value: 5.0 To 9.0 Ω (At Approx. 20 °C)
If The Specified Value Was Not Obtained:
-- Replace the Camshaft Adjustment Valve 1 -N205- Refer to the Repair Manual.
If The Specified Value Was Obtained:
Checking voltage
-- Start the engine.
-- Using a multimeter, Check the Camshaft Adjustment Valve 1 -N205- electrical harness connector terminal 1 for voltage.
-- Switch the ignition OFF.
Specified Value: Battery Voltage.
If The Specified Value Was Not Obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground. Replace any open fuse. Refer to the wiring diagram for circuit detail.
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If The Specified Value Was Obtained:
-- Turn the ignition On.
-- Using a multimeter, Check the Camshaft Adjustment Valve 1 -N205- electrical harness connector terminal 2 to ground for voltage.
-- Switch the ignition OFF.
Specified Value: Near 3.53 V.
If The Specified Value Was Obtained:
-- Replace the Camshaft Adjustment Valve 1 -N205- Refer to the Repair Manual.
If The Specified Value Was Not Obtained:
Checking Wiring
-- Remove the Engine Control Module (ECM) -J623-.
-- Using a multimeter, Check the Camshaft Adjustment Valve 1 -N205- electrical harness connector terminal 2 to the Engine Control Module (ECM) electrical harness connector T60 for an open circuit. Refer to Appropriate System Diagrams for pin locations.
| Camshaft Adjustment Valve 1 -N205- electrical harness connector terminal: | Engine Control Module (ECM) electrical harness connector T60 terminal: |
|---|---|
| 2 | 1 |
Specified Value: 1.5 Ω Max.
If The Specified Value Was Not Obtained:
-- Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground.
-- Check the wiring connection for damage, corrosion, loose or broken terminals.
-- If necessary, repair the faulty wiring connection.
If No Malfunction Is Found In The Wiring And Terminal 2 Voltage Supply Was Not OK:
-- Replace the Engine Control Module (ECM) -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 .