Toyota Tacoma manuals

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 airfuel ratio was lean or rich, etc. At the time of the malfunction.

1 Read output dtc

  1. Clear the dtc.
  2.  warm up the engine.
  3.  run the engine at 3,000 rpm for 10 seconds or more.
  4.  connect the handheld tester or the obd ii scan tool to the dlc3.
  5.  turn the ignition switch on and push the handheld tester or the obd ii scan tool main switch on.
  6.  select the item diagnosis / enhanced obd ii / dtc info / current codes.
  7.  read the dtcs.

Result :

2 Inspect knock sensor

2 Inspect knock sensor

  1. Check the knock sensor installation.

    Torque: 20 nvm (204 kgfcm, 15 ftvlbf)

3 Check harness and connector(ecm  knock sensor)

3 Check harness and connector(ecm knock sensor)

  1. Disconnect the e4 ecm connector.
  2.  measure the resistance between terminals of the e4 ecm connector.

Standard:

  1. Reconnect the ecm connector.

4 Inspect ecm(knk1 voltage)

4 Inspect ecm(knk1 voltage)

  1. Disconnect the e4 ecm connector.
  2.  turn the ignition switch on.
  3.  measure the voltage between terminals of the e4 ecm terminals.

Standard:

  1. Reconnect the ecm connector.

Check for intermittent problems

Check for intermittent problems

Notice

: fault may be intermittent. Check harness and connectors carefully.

5 Inspect knock sensor

  1. Remove the k1 knock sensor.
  2.  measure the resistance between the terminals.

Standard:

  1. Reinstall the knock sensor.

Repair or replace harness or connector

Repair or replace harness or connector

Circuit description
A flat type knock sensor (nonresonant 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:

Overhaul
1. Remove w/head taper screw plug no.2 Using a socket hexagon wench 10, remove the taper screw plug and gasket. 2. Remove valve lifter Remove the valve lifters from the cylinder head. 3. Remove valve Place the cylinder head on wooden blocks.  using sst, compres ...

Using the steering wheel switches
The steering wheel switches can be used to operate a connected cellular phone. Operating a telephone using the steering wheel switches ■ Steering wheel switches on the right hand side 1 Off hook switch Make a call Receive a call Display Phone screen 2 On hook switch End a cal ...

If the vehicle becomes stuck
Carry out the following procedures if the tires spin or the vehicle becomes stuck in mud, dirt or snow: 1 Stop the engine. Set the parking brake and shift the shift lever to P (automatic transmission or continuously variable transmission) or N (manual transmission). 2 Remove the mud, snow or s ...

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