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. Refer to the Repair information.
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 ohms (at approx. 20° C)
If the specified value was Not obtained
Replace the Camshaft Adjustment Valve 1 -N205- Refer to the Repair information.
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 2 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. Refer to the wiring diagram.
Check the wiring connection for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.
If the specified value was obtained
Checking wiring
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-. Refer to the Repair information.
Using a multimeter, Check the Camshaft Adjustment Valve 1 -N205- electrical harness connector terminal 1 to the Engine Control Module (ECM) electrical harness connector T60 terminal 45 for an open circuit. Refer to Wiring Diagrams for pin locations.
| Camshaft Adjustment Valve 1 -N205 - electrical harness connector terminal | Engine Control Module (ECM) electrical harness connector T60 terminal or test box socket |
|---|---|
| 1 | 45 |
Specified value: 1.5 ohms 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 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
- Check the DTC memory. Refer to «DIAGNOSTIC MODE 03 - READ DTC MEMORY»(ref-505628-S01214503372012100100000) .
- If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(ref-505628-S38572113072012100100000) .
- If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(ref-505628-S08963413402012100100000) .
CAMSHAFT ADJUSTMENT VALVE 1, EXHAUST
The following procedure is used to diagnose Camshaft Adjustment Valve 1 (exhaust) -N318- which is controlled by Engine Control Module (ECM) - J623-.
Special tools and workshop equipment required
- Multimeter.
- Wiring diagram.
Test requirements
- Fuse -SC7- OK.
- Engine Control Module (ECM) Power Supply Relay -J271- OK.
- 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 (GND) connections between engine/transmission/chassis OK.
- Ignition switched off.
Test Procedure
Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK
Disconnect the Camshaft Adjustment Valve 1 (exhaust) -N318- electrical harness connector
Checking internal resistance
Using a Multimeter, check the Camshaft Adjustment Valve 1 (exhaust) -N318- terminals 1 to 2 for resistance.
Specified value: 5.0 to 8.0 ohms (at approx. 20° C)
If the specified value was not obtained
Replace Camshaft Adjustment Valve 1 (exhaust) -N318-. Refer to Repair information.
If the specified value was obtained
Checking voltage
Switch the ignition on.
Using a Multimeter, Check the Camshaft Adjustment Valve 1 (exhaust) -N318- electrical harness connector terminal 2 to Ground (GND) for voltage.
Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained
Check the wiring connection from the Camshaft Adjustment Valve 1 (exhaust) -N318- electrical harness connector terminal 2 to the Engine Control Module (ECM) Power Supply Relay -J271- socket 2/87 for an open circuit, short circuit to Battery (+) or Ground (GND).
Check the wiring connection for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.
If the specified value was obtained
Checking wiring
If the manufacturers test box is being used, perform the following step.
Install the test box. Refer to Repair information.
If the manufacturers test box is not being used, perform the following step.
Remove the Engine Control Module (ECM) -J623-. Refer to Repair information.
Using a Multimeter, check the Camshaft Adjustment Valve 1 (exhaust) -N318- electrical harness connector terminal 1 to the Engine Control Module (ECM) -J623- electrical harness connector T60 for an open circuit.
| Camshaft Adjustment Valve 1 (exhaust) -N318- electrical harness connector terminal | Engine Control Module (ECM) -J623- electrical harness connector T60 terminal or test box socket |
|---|---|
| 1 | 5 |
Specified value: 1.5 ohms Max.
If the specified value was not obtained
Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
Check the wiring connection for damage, corrosion, lose or broken terminals.
If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and voltage supply was not OK
Replace the Engine Control Module (ECM) -J623-. Refer to Repair information.
Assembly is performed in the reverse order of removal.
Final procedures
After 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»(ref-505628-S01214503372012100100000) .
- If necessary, erase the DTC memory. Refer to «DIAGNOSTIC MODE 04 - ERASE DTC MEMORY»(ref-505628-S38572113072012100100000) .
- If the DTC memory was erased, generate readiness code. Refer to «READINESS CODE»(ref-505628-S08963413402012100100000) .