Toyota FJ Cruiser (GSJ 10, 15 series). Instruction - part 31

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–79

ES

(e) Switch the ECM from normal mode to check mode using 

the tester (See page 

ES-42

).

(f)

Drive the vehicle for more than 10 minutes.

(g) Read DTCs using the tester.

OK:

No DTC output.

OK

NG

(a) Remove the cylinder head cover (See page 

EM-25

 or 

EM-25

).

(b) Turn the crankshaft pulley, and align its groove with the 

timing mark "0" of the timing chain cover.

(c) Check that the timing marks of the camshaft timing gears 

are aligned with the timing marks of the bearing cap as 
shown in the illustration.
If not, turn the crankshaft 1 revolution (360

°), then align 

the marks as above.
OK:

Timing marks on camshaft timing gears are aligned 
as shown in the illustration.

(d) Reinstall the cylinder head cover (See page 

EM-30

 or 

EM-30

).

NG

OK

(a) Remove the OCV.
(b) Measure the resistance between the terminals of the 

OCV.
Standard Resistance

(c) Apply the positive battery voltage to terminal 1 and 

negative battery voltage to terminal 2. Check the valve 
operation. 
OK:

Valve moves quickly.

(d) Reinstall the OCV.

END

4

CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

RH Bank

Timing Marks

Timing Marks

Timing Marks

LH Bank

G036290E05

ADJUST VALVE TIMING

5

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)

Valve Moves

A097066E06

Tester Connections

Specified Conditions

1 - 2

6.9 to 7.9 

Ω at 20°C (68°F)

ES–80

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

NG

OK

OK:

Filter is not clogged.

NG

OK

NEXT

(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch ON and turn the tester ON.
(c) Clear DTCs (See page 

ES-38

).

(d) Start the engine and warm it up.
(e) Switch the ECM from normal mode to check mode using 

the tester (See page 

ES-42

).

(f)

Drive the vehicle for more than 10 minutes.

(g) Confirm that no DTC is set using the tester.

OK:

No DTC output.

HINT:
DTC P0011, P0012, P0021 or P0022 is output when 
foreign objects in engine oil are caught in some parts of 
the system. These codes will stay registered even if the 
system returns to normal after a short time. These 
foreign objects are then captured by the oil filter, thus 
eliminating the source of the problem.

OK

NG

REPLACE CAMSHAFT TIMING OIL 
CONTROL VALVE ASSEMBLY (See page 

ES-

414

)

6

INSPECT OIL CONTROL VALVE FILTER

CLEAN OIL CONTROL VALVE FILTER

7

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

8

CHECK WHETHER DTC OUTPUT RECURS

SYSTEM OK

REPLACE ECM (See page 

ES-446

)

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES–81

ES

DESCRIPTION

Refer to DTC P0335 (See page 

ES-187

).

MONITOR DESCRIPTION

The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake 
camshaft. The VVT system includes the ECM, the Oil Control Valve (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 intake camshaft. 
The ECM calibrates the intake valve timing by setting the intake camshaft to the most retarded angle while 
the engine is idling. The ECM closes the OCV to retard the cam. The ECM stores this value as the VVT 
learning value. When the difference between the target and actual intake valve timings is 5

°CA 

(Crankshaft Angle) or less, the ECM stores it.
If the VVT learning value matches the following conditions, the ECM determines the existence of a 
malfunction in the VVT system, and sets the DTC.
•

VVT learning value: Less than 22.5

°CA, or more than 45.2°CA.

•

Above condition continues for 18 seconds or more.

This DTC indicates that the intake camshaft has been installed toward the crankshaft at an incorrect 
angle, caused by factors such as the timing chain having jumped a tooth.
This monitor begins to run after the engine has idled for 5 minutes.

MONITOR STRATEGY

TYPICAL ENABLING CONDITIONS

DTC

P0016

Crankshaft Position - Camshaft Position Corre-
lation (Bank 1 Sensor A)

DTC

P0018

Crankshaft Position - Camshaft Position Corre-
lation (Bank 2 Sensor A)

DTC No.

DTC Detection Conditions

Trouble Areas

P0016

Deviations in crankshaft and camshaft position sensor 1 
signals (2 trip detection logic)

•

Mechanical system (Timing chain has jumped tooth or 
chain stretched)

•

ECM

P0018

Deviations in crankshaft and camshaft position sensor 2 
signals (2 trip detection logic)

Related DTCs

P0016: Camshaft Timing Misalignment at idling

Required Sensors/Components (Main)

VVT actuator

Required Sensors/Components (Related)

Camshaft position sensor, Crankshaft position sensor

Frequency of Operation

Once per driving cycle

Duration

Less than 1 minute

MIL Operation

2 driving cycles

Sequence of Operation

None

Monitor runs whenever following DTCs not present

P0011 (VVT system 1 - advance)
P0012 (VVT system 1 - retard)
P0021 (VVT system 2 - advance)
P0022 (VVT system 2 - retard)
P0115 - P0118 (ECT sensor)

Engine RPM

500 to 1,000 rpm

ES–82

1GR-FE ENGINE CONTROL SYSTEM  –  SFI SYSTEM

ES

TYPICAL MALFUNCTION THRESHOLDS

WIRING DIAGRAM

Refer to DTC P0335 (See page 

ES-189

).

Refer to DTC P0340 (See page 

ES-195

).

INSPECTION PROCEDURE

HINT:
Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when 
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was 
moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other 
data, from the time the malfunction occurred.

NG

OK

One of following conditions is met

-

VVT learning value at maximum retarded valve timing (Bank 1)

Less than 22.5 

°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (Bank 2)

Less than 22.5 

°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (Bank 1)

More than 45.2 

°CA (crankshaft angle)

VVT learning value at maximum retarded valve timing (Bank 2)

More than 45.2 

°CA (crankshaft angle)

1

CHECK VALVE TIMING (CHECK FOR LOOSE AND A JUMPED TOOTH OF TIMING CHAIN) 
(See page 

ES-79

)

ADJUST VALVE TIMING (REPAIR OR 
REPLACE TIMING CHAIN)

REPLACE ECM (See page 

ES-446

)