Toyota 2GR-FE Manual page 392

ES–236
DTC
DTC
DTC
DTC
DTC
ES
DTC
DESCRIPTION
The intake camshaft's Variable Valve Timing (VVT) sensor (G signal) consists of a magnet and MRE
(Magneto Resistance Element).
The VVT camshaft drive gear has a sensor plate with 3 teeth on its outer circumference. When the gear
rotates, changes occur in the air gaps between the sensor plate and MRE, which affects the magnetic
field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the gear
rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the
ECM.
The crankshaft angle sensor plate has 34 teeth. The pickup coil generates 34 signals for each engine
revolution. Based on combination of the G signal and NE signal, the ECM detects the crankshaft angle.
Then the ECM uses this data to control fuel injection time and injection timing. Also, based on the NE
signal, the ECM detects the engine speed.
DTC No.
P0340
P0345
P0342
P0347
P0343
P0348
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
P0340 Camshaft Position Sensor Circuit Malfunction
Camshaft Position Sensor "A" Circuit Low
P0342
Input (Bank 1 or Single Sensor)
Camshaft Position Sensor "A" Circuit High
P0343
Input (Bank 1 or Single Sensor)
P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
Camshaft Position Sensor "A" Circuit Low
P0347
Input (Bank 2)
Camshaft Position Sensor "A" Circuit High
P0348
Input (Bank 2)
DTC Detection Condition
• Input voltage to ECM remains 0.3 V or less, or 4.7
V or higher for more than 5 seconds, when 2 or
more seconds have elapsed after turning engine
switch on (IG)
(1 trip detection logic)
• No VVT sensor signal to ECM during cranking
(1 trip detection logic)
Output voltage of VVT sensor 0.3 V or less is for 5
seconds
(1 trip detection logic)
Output voltage of VVT sensor 4.7 V or more is for 5
seconds
(1 trip detection logic)
Trouble Area
• Open or short in VVT sensor for intake camshaft
circuit
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
• ECM
• Open or short in VVT sensor for intake camshaft
circuit
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
• ECM
• Open or short in VVT sensor for intake camshaft
circuit
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
• ECM