Camshaft Adjustment Actuators, Checking
The following procedure is used to diagnose Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373- which are controlled by Engine Control Module - J623-.
Special tools and workshop equipment required
- multimeter.
- Wiring diagram.
Test requirements
- The Engine Control Module - J623- fuses 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 .
Start diagnosis
-- Disconnect appropriate Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373- electrical harness connectors.
Checking internal resistance
-- Using a multimeter, check the Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373- pins 1 and two, for resistance.
Specified value: 5.0 to 10.0 Ω (at approx. 20° C)
If the specified value was not obtained:
-- Replace the appropriate Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373-. Refer to the appropriate service information.
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 -J623-. Refer to the appropriate service information.
-- Using a multimeter, Check the Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373- electrical harness connector to the Engine Control Module - J623- electrical harness connector for resistance.
| Cam Adjustment Actuators -F366, F367, F368, F369, F370, F371, F372, F373- electrical harness connector terminals | Engine Control Module - J623- electrical harness connector T60 terminals or test box sockets |
|---|---|
| F366 1 | T 60- 2 |
| F367 1 | T 60- 17 |
| F368 1 | T 60- 20 |
| F369 1 | T 60- 9 |
| F370 1 | T 60- 3 |
| F371 1 | T 60- 10 |
| F372 1 | T 60-19 |
| F373 1 | T 60-4 |
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 (GND).
-- 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 the resistance was OK:
-- Replace the Engine Control Module -J623-. Refer to the appropriate service information.
Assembly is performed in the reverse order of the removal, note the following:
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 .
- 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 .