Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 29

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–71

ES

P2420

Evaporative Emission System 
Switching Valve Control Circuit 
High

- Canister pump module (Reference orifice, leak 
detection pump, vent valve)
- Connector/wire harness (Canister pump 
module - ECM)
- ECM

Comes on

DTC stored

ES-335

P2610

ECM / PCM Internal Engine Off 
Timer Performance

- ECM

Comes on

DTC stored

ES-341

P2A00

A/F Sensor Circuit Slow 
Response (Bank 1 Sensor 1)

- Open or short in A/F sensor (bank 1 sensor 1) 
circuit
- A/F sensor
- A/F sensor heater
- ECM

Comes on

DTC stored

ES-343

P2A03

A/F Sensor Circuit Slow 
Response (Bank 2 Sensor 1)

- Open or short in A/F sensor (bank 2 sensor 1) 
circuit
- A/F sensor
- A/F sensor heater
- ECM

Comes on

DTC stored

ES-343

DTC No.

Detection Item

Trouble Areas

MIL

Memory

See page

ES–72

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

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HINT:
This DTC relates to the Oil Control Valve (OCV).

DESCRIPTION

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV's 
duty-cycle is excessively high or low while the engine running, the ECM will illuminate the MIL and set the 
DTC.
The VVT (variable valve timing) system adjusts the intake valve timing to improve the driveability. The 
engine oil pressure turns the camshaft actuator to adjust the valve timing. The OCV is a solenoid valve 
and switches the engine oil line. The valve moves when the ECM applies the 12 volts to the solenoid. The 
ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, 
crankshaft position,, throttle position etc.

DTC

P0010

Camshaft Position "A" Actuator Circuit (Bank 
1)

DTC

P0020

Camshaft Position "A" Actuator Circuit (Bank 
2)

DTC No.

DTC Detection Conditions

Trouble Areas

P0010

Open or short in OCV (bank 1) circuit
(1 trip detection logic)

•

OCV (bank 1) circuit

•

OCV (bank 1)

•

ECM

P0020

Open or short in OCV (bank 2) circuit
(1 trip detection logic)

•

OCV (bank 2) circuit

•

OCV (bank 2)

•

ECM

Crankshaft Position Sensor

Mass Air Flow Meter

Throttle Position Sensor

Engine Coolant 
Temperature Sensor

Vehicle Speed Signal

Camshaft Position Sensor

ECM

Target Valve Timing

Correction

Actual Valve Timing

Duty-cycle

Camshaft Timing 
Oil Control Valve 
(OCV)

Feedback

A117755E02

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–73

ES

MONITOR DESCRIPTION

This DTC is designed to detect opens or shorts in the camshaft oil control valve (OCV) circuit. If the OCV's 
duty-cycle is excessively high or low while the engine running, the ECM will illuminate the MIL and set the 
DTC. 

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

TYPICAL MALFUNCTION THRESHOLDS

COMPONENT OPERATING RANGE

Related DTCs

P0010: VVT OCV (bank 1) open/short
P0020: VVT OCV (bank 2) open/short

Required Sensors/Components (Main)

VVT OCV (Variable Valve Timing Oil Control Valve)

Required Sensors/Components (Related)

-

Frequency of Operation

Continuous

Duration

1 second

MIL Operation

Immediate

Sequence of Operation

None

Monitor runs whenever following DTCs not present

-

Engine

Running

OCV duty-cycle

3% or less

100%

OCV duty-cycle

4 to 100 % when engine running

ES–74

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

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WIRING DIAGRAM

INSPECTION PROCEDURE

(a) Clear the DTCs after recording the freeze frame data 

and DTCs.

(b) Allow the engine to idle and check for DTCs.
(c) Check whether P0010 or P0020 is present.
OK:

P0010 or P0020 is present.

NG

OK

1

CHECK FOR DTC

B12
OCV (Bank 1)

B26
OCV (Bank 2)

ECM

OC1+

OC1-

OC2+

OC2-

1

2

1

2

B3

B3

17

16

B3

B3

14

15

A133454E01

CHECK FOR INTERMITTENT PROBLEMS