Toyota Corolla Repair Manual: Inspection procedure
Hint
: read freeze frame data using the hand–held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.
Hand–held tester
1 Perform active test by hand–held tester(operate ocv)
- Connect the hand–held tester to the dlc3.
- start the engine and warm it up.
- turn the ignition switch on and push the hand–held tester main switch on.
- select the item ”diagnosis / enhanced obd ii / active test / vvt ctrl b1”.
- check the engine speed when operating the oil control valve (ocv) by the hand–held tester.
Standard:
2 Inspect camshaft timing oil control valve assy(ocv)
3 Inspect ecm(ocv signal)
- Inspection using the oscilloscope.
- during idling, check the waveform between the terminals of the e3 ecm connector.
Standard:
4 Check harness and connector(camshaft timing oil control valve (ocv) – ecm)
- Disconnect the c2 camshaft timing oil control valve connector.
- disconnect the e3 ecm connector.
- check the resistance between the wire harness side connectors.
Standard (check for open):
Standard (check for short):
- Reconnect the camshaft timing oil control valve connector.
- reconnect the ecm connector.
Check for intermittent problems
Obdii scan tool (excluding hand–held tester):
1 Inspect camshaft timing oil control valve assy(operate ocv)
- Disconnect the c2 camshaft timing oil control valve connector.
- apply positive battery voltage between the terminals of the camshaft timing oil control valve.
- check the engine speed.
Standard
: engine speed is rough idle or engine is stalled.
- reconnect the camshaft timing oil control valve connector.
2 Inspect ecm(ocv signal)
- Inspection using the oscilloscope.
- during idling, check the waveform between the terminals of the e3 ecm connector.
Standard:
3 Check harness and connector(camshaft timing oil control valve (ocv) – ecm)
- Disconnect the c2 camshaft timing oil control valve connector.
- disconnect the e3 ecm connector.
- check the resistance between the wire harness side connectors.
Standard (check for open):
Standard (check for short):
- Reconnect the camshaft timing oil control valve connector.
- reconnect the ecm connector.
Check for intermittent problems
Circuit description
The variable valve timing (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, ...
Camshaft position ”a” –timing over
Dtc p0011 camshaft position ”a” –timing over–
advanced or system performance
(bank 1)
Dtc p0012 camshaft position ”a” –timing over–
retarded (bank 1) ...
Other materials:
No sound is heard from speaker in all modes
Wiring diagram
Inspection procedure
1 Check lcd (liquid crystal display) for lighting
Lcd illumination check
turn the ignition switch acc.
Turn the radio receiver assembly on.
Standard: lcd illumination of the radio receiver assembly light.
2 Control fader and ...
Pre–check
1. Diagnosis system
Release the parking brake lever.
check the warning lights.
When the ignition switch is turned on, check that the abs
warning light and brake warning light goes on for 3 sec.
Hint:
when the parking brake is applied or the level of the brake
fluid is low, the ...
Sound setting
1 Display the “Phone/Message Settings” screen. 2 Select “Sound Settings” on the
“Phone/Message Settings” screen.
1 Set the desired ringtone.
2 Adjust the ringtone volume.
3 Adjust the message readout volume.
4 Set the desired incoming SMS/MMS tone.
5 Adjust the incoming SMS/ MMS tone volume.
...