Description
The camshaft position (cmp) sensor consists of a magnet and an iron core which is wrapped with copper wire, and is installed onto the cylinder head. When the camshaft rotates, each of 3 teeth on the camshaft passes through the cmp sensor. This activates the internal magnet in the sensor, generating a voltage in the copper wire. The camshaft rotation is synchronized with the crankshaft rotation. When the crankshaft turns twice, the voltage is generated 3 times in the cmp sensor. The generated voltage in the sensor acts as a signal, allowing the ecm to locate the camshaft position. This signal is then used to control ignition timing, fuel injection timing, and the vvt system.
Hint:
Dtc p0340 indicates a malfunction relating to the cmp sensor (+) circuit (the wire harness between the ecm and cmp sensor, and the cmp sensor itself).
Reference: inspection using an oscilloscope
Hint:
Monitor description
If no signal is transmitted by the cmp sensor despite the engine revolving, or the rotation of the camshaft and the crankshaft is not synchronized, the ecm interprets this as a malfunction of the sensor.
If the malfunction is not repaired successfully, a dtc is set 10 seconds after the engine is next started.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Component operating range
Wiring diagram
Refer to dtc p0335 (see page es-174).
Inspection procedure
Hint:
Read freeze frame data using the intelligent tester. Freeze frame data records 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.
Standard resistance
Hint:
Terms cold and hot refer to the temperature of the sensor. Cold means approximately -10° to 50°c (14 °to 122°f). Hot means approximately 50° to 100°c (122°to 212°f).
Standard resistance (check for open)
Standard resistance (check for short)
Ok: sensor is installed correctly.
Ok: camshaft teeth do not have any cracks or deformation.
Hint:
If the engine does not start, replace the ecm.
Pressure control solenoid "A" electrical (shift solenoid valve sl1)
Description
Shifting from 1st to o/d is performed in combination with the on and off
operation of the shift solenoid
valves sl1 and sl2, which are controlled by the ecm. If an open or short circuit
occurs in any of the shift
solenoid valves, the ecm controls the remaining normal shift soleno ...
Abs and traction actuator (skid control ecu) communication stop mode
Description
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring the resistances
of the main wire and the branch
wire.
After the ignition switch is turned off, check that the key
reminder warning system and light
reminder warning system ...
Wireless remote
control/electronic
key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Flathead screwdriver
Small flathead screwdriver
Lithium battery cr2016 (vehicles without a smart key system), or
cr2032 (vehicles with a smart key system)
Replacing the battery
Vehicles without a ...