Toyota RAV4 manuals

Toyota Sienna Service Manual: Camshaft Position "B" Actuator Circuit / Open

DTC P0013 Camshaft Position "B" Actuator Circuit / Open (Bank 1)

DTC P0023 Camshaft Position "B" Actuator Circuit / Open (Bank 2)

DESCRIPTION

The Variable Valve Timing (VVT) system includes the ECM, OCV and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV, based on the signals transmitted by several sensors. The VVT controller regulates the exhaust camshaft angle using oil pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ECM

DESCRIPTION

DTC No.

DTC Detection Condition

Trouble Area

P0013 Open or short in OCV for exhaust camshaft (bank 1) circuit (1 trip detection logic)
  • Open or short in OCV for exhaust camshaft (bank 1) circuit
  • OCV for exhaust camshaft (bank 1)
  • ECM
P0023 Open or short in OCV for exhaust camshaft (bank 2) circuit (1 trip detection logic)
  • Open or short in OCV for exhaust camshaft (bank 2) circuit
  • OCV for exhaust camshaft (bank 2)
  • ECM

MONITOR DESCRIPTION

The ECM optimizes the valve timing using the VVT system to control the exhaust camshaft. The VVT system includes the ECM, the OCV and the VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the exhaust camshaft.

After the ECM sends the target duty-cycle signal to the OCV, the ECM monitors the OCV current to establish an actual duty-cycle. The ECM determines the existence of a malfunction and sets the DTC when the actual duty-cycle ratio varies from the target duty-cycle ratio.

MONITOR STRATEGY

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

COMPONENT OPERATING RANGE

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE OCV)

  1. Connect the intelligent tester to the DLC3.
  2.  Start the engine and turn the tester on.
  3.  Warm up the engine.
  4.  Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1 or VVT CTRL B2.
  5.  Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

OK

OK

CHECK FOR INTERMITTENT PROBLEMS

2 INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

  1. Disconnect the C26 or C25 camshaft timing oil control valve (OCV) connector.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

  1. Reconnect the OCV connector.

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

3 CHECK HARNESS AND CONNECTOR (OCV - ECM)

CHECK HARNESS AND CONNECTOR (OCV - ECM)

  1. Disconnect the C25 or C26 camshaft timing oil control valve (OCV) connector.
  2.  Disconnect the E11 ECM connector.
  3.  Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for open)

Standard resistance

Standard resistance (Check for short)

Standard resistance

  1. Reconnect the ECM connector.
  2.  Reconnect the OCV connector

REPLACE ECM

Camshaft Position "A" - Timing Over-Advanced
DTC P0011 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1) DTC P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1) DTC P0021 Camshaft Positio ...

Camshaft Position "B" - Timing Over-Advanced
DTC P0014 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) DTC P0015 Camshaft Position "B" - Timing Over-Retarded (Bank 1) DTC P0024 Camshaft Positio ...

Other materials:

Reassembly
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Installation
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Disassembly
1. REMOVE PROPELLER SHAFT ASSEMBLY (a) Put matchmarks on both the flanges. (b) Remove the 4 nuts, bolts and washers. 2. REMOVE INTERMEDIATE SHAFT (a) Put matchmarks on the propeller shaft subassembly and universal joint flange. NOTICE: Do not use a punch for the marks. (b) Using a ...

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