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.
1 Read output dtc
- Clear the dtc.
- warm up the engine.
- run the engine at 3,000 rpm for 10 seconds or more.
- connect the hand–held tester or the obd ii scan tool to the dlc3.
- turn the ignition switch on and push the hand–held tester or the obd ii scan tool main switch on.
- select the item ”diagnosis / enhanced obd ii / dtc info / current codes”.
- read the dtcs.
Result :
2 Inspect knock sensor
- Check the knock sensor installation.
Torque: 20 nvm (204 kgf·cm, 15 ftvlbf)
3 Check harness and connector(ecm – knock sensor)
- Disconnect the e4 ecm connector.
- measure the resistance between terminals of the e4 ecm connector.
Standard:
- Reconnect the ecm connector.
4 Inspect ecm(knk1 voltage)
- Disconnect the e4 ecm connector.
- turn the ignition switch on.
- measure the voltage between terminals of the e4 ecm terminals.
Standard:
- Reconnect the ecm connector.
Check for intermittent problems
Notice
: fault may be intermittent. Check harness and connectors carefully.
5 Inspect knock sensor
- Remove the k1 knock sensor.
- measure the resistance between the terminals.
Standard:
- Reinstall the knock sensor.
Repair or replace harness or connector
Circuit description
A flat type knock sensor (non–resonant type) has the structure that can
detect the vibration in a wider band
of frequency from about 6 khz to 15 khz and has the following features.
Knock sensors ...
Crankshaft position sensor ”a”
circuit
Dtc p0335 crankshaft position sensor ”a”
circuit
Dtc p0339 crankshaft position sensor ”a”
circuit intermittent ...
Other materials:
Adding a new phone number
Select “Add contacts” using . ●
Transferring all contacts from the cellular phone
Select “Overwrite all contacts” using
and press
(YES).
● Transferring one contact from the cellular phone
Select “Add one contact” using and
press (YES). ...
Inspection procedure
Hint:
hand–held tester only:
narrowing down the trouble area is possible by performing ”a/f control” active
test (heated oxygen
sensor or other trouble areas can be distinguished).
Perform active test using hand–held tester (a/f control).
Hint:
”a/f control” is the active test which cha ...
Inspection
1. Spark plug
Notice:
never use a wire brush for cleaning.
Never attempt to adjust the electrode gap on used
spark plug.
Spark plug should be replaced every 192,000 km
(120,000 miles).
Clean the spark plugs.
Air pressure: below 588 kpa (6.0 Kg/cm2, 85 psi)
duration: 20 sec ...