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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:

Hydraulic test
1. Perform hydraulic test Measure the line pressure. Notice: Do the test at normal operation atf temperature 50 to 80 c (122 to 176 f). The line pressure test should always be carried out in pairs. One technician should observe the conditions of wheels or wheel stopper outside ...

Circuit description
A thermistor is built in the engine coolant temperature sensor and changes the resistance value according to the engine coolant temperature. The structure of the sensor and connection to the ecm is the same as those of the intake air temperature sensor. Hint: if the ecm detects the dtc ...

Replacement
1. Remove console box subassy rear 2. Remove parking brake lever subassy Disconnect the parking brake switch connector from the parking brake switch.  remove the lock nut and adjusting nut from the parking brake cable assy no.1. Remove the 2 bolts. Using a ...

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