Toyota Tacoma manuals

Toyota Corolla Repair Manual: Basic inspection

When the malfunction is not confirmed in the dtc check, troubleshooting should be carried out in all the possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location causing the problem can be found quickly and efficiently. Therefore, using this check is essential in the engine troubleshooting.

1 Check battery voltage

Notice

: carry out this check with the engine stopped and ignition switch off.

Ng charge or replace battery

Ng charge or replace battery

2 Check if engine will crank

2 Check if engine will crank

Ng proceed to problem symptoms table on page

3 Check if engine starts

3 Check if engine starts

Ng go to step 7

4 Check air filter

4 Check air filter

  1. Visually check that the air filter is not excessively dirty or oily.

Notice

: if necessary, clean the filter with compressed air. First blow from the inside thoroughly, then blow from the outside of the filter.

Ng clean or replace

5 Check idle speed

5 Check idle speed

Ng proceed to problem symptoms table on page

6 Check ignition timing

6 Check ignition timing

Ng proceed to page 141 and continue to troubleshoot

Proceed to problem symptoms table on page

Proceed to problem symptoms table on page

7 Check fuel pressure

Ng proceed to page 111 and continue to troubleshoot

8 Check for spark

8 Check for spark

Ng proceed to page 181 and continue to troubleshoot

Proceed to problem symptoms table on page

Proceed to problem symptoms table on page

Check mode procedure
Hint: handheld tester only: compared to the normal mode, the check mode has more sensing ability to detect malfunctions. Furthermore, the same diagnostic items which are detected in the normal mo ...

Terminals of ecm
*1: A/t only ...

Other materials:

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 ...

Inspection procedure
Hint: if dtcs p0115, p0116, p0117, p0118 and p0125 are output simultaneously, the engine coolant temperature sensor circuit may be open or short. Perform the troubleshooting of dtc p0115, p0117 or p0118 first. Read freeze frame data using the hand-held tester or the obd ii scan to ...

Body panel sealing areas
Be sure to apply body sealer to the body panel joints and door edges (tip of outer panel folded part), etc., To waterproof and rustproof them. Hint:  apply degreasing agent to a clean cloth and clean the sealer application areas. After removing the applied spot sealer from the se ...

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