- Engine:
- C15 (S/N: MXS1-4579)
Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.
Problem
224-4535 Pressure Sensor Gp are being replaced when diagnostic codes 385-01 and/or 283-07 are present. These codes indicate a system problem. When 385-01 and/or 283-07 diagnostic codes are present use the following procedures to inspect the quills for failure. Additional information for troubleshooting the pressure sensor can be found in Technical Information Bulletin, TIBU4378.
SOLUTION
- If the quills have a hex head, no further action is required.
Illustration 1 | g01276990 |
236-3991 Quill As (old style) |
Illustration 2 | g01277015 |
271-4765 Quill (new style) |
- Refer to Disassembly and Assembly, RENR9403, "Variable Valve Actuator Oil Pressure Solenoid - Remove and Install" for the removal of the oil connector from the quill.
- Remove the 236-3991 Quill As with the appropriate tool (9 mm square drive). Do not use an impact wrench, a pipe wrench, or locking pliers.
- If the quill should break and the threads are left behind, replace the Variable Valve Actuator (VVA). Proceed to Step 7.
- Check the quill for a screen. Perform the following procedure if no screen is present. Replace the quill with a new style 271-4765 Quill that has a 13 mm hex head. Use 40 ± 5 N·m (30 ± 4 lb ft) torque for installation.
- For quills that have a screen, if the screen is damaged, replace the VVA. Proceed to Step 7. If the screen is not damaged perform the following procedure. Replace the old style quill with a new style 271-4765 Quill that has a 13 mm hex head. Use 40 ± 5 N·m (30 ± 4 lb ft) torque for installation.
- Before you install the engine oil connector, perform the following flush procedure.
- Remove the end rail valve. Install a 6E-5047 Plug with a 9.5 mm allen wrench.
- Unplug both connectors for the injector harness from the valve cover base.
- Crank the engine for at least five seconds in order to flush the rail of the variable valve actuator.
- Reinstall the end rail valve, and the three oil connectors. Reconnect the wiring harness.
- Refer to Disassembly and Assembly, RENR9403, "Valve Actuator (Variable ) - Install". Perform Test Step 3 and Test Step 4 of that procedure.
Note: Whenever you remove the Variable Valve Actuators, inspect the 233-3672 Studs . Replace all cut square studs of the VVA with the new designed tapered 233-3672 Stud .
Illustration 3 | g01276867 |
233-3672 Stud The top stud is the new style. The bottom stud is the old style. |
Note: Inspecting, flushing, and replacing the quill should take no longer than 1 hour.
Note: The replacement of all nine 233-3672 Studs should take no longer than 0.2 hours.