Toyota Corolla Repair Manual: Inspection procedure

Hint

:

• this dtc chart is on the premise that the engine is cranked normally. If the engine is not cranked, proceed to the problem symptoms table on page 05–42.
• 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 Read value of hand–held tester(starter signal)

1. Connect the hand–held tester or obd ii scan tool to the dlc3.
2.  turn the ignition switch on and push the hand–held tester main switch on.
3.  select the item ”diagnosis / enhanced obd ii / data list / all / starter sig” and read the value displayed the hand–held tester.

Result:

2 Inspect park/neutral position switch or clutch start switch

1. Inspect the park/neutral position switch. (A/t)

1.  disconnect the a2 park/neutral position switch connector.
2.  Check for continuity between each terminal shown below when the shift lever is moved to each range.

Standard:

3. Reconnect the park/neutral position switch connector.

2.  inspect the clutch start switch. (M/t)

1.  disconnect the c8 clutch start switch connector.
2.  Check for continuity between terminals when the switch on and off.

Standard:

3. Reconnect the clutch start switch connector.

3 Read value of hand–held tester(starter signal)

1. Connect the hand–held tester to or obd ii scan tool the dlc3.
2.  turn the ignition switch on and push the hand–held tester main switch on.
3.  select the item ”diagnosis / enhanced obd ii / data list / all / starter sig” and read its value displayed the hand–held tester.

Result:

4 Inspect ignition or starter switch assy

1. Check for continuity between the connector terminals shown in the chart below

5 Read value of hand–held tester(starter signal)

1. Connect the hand–held tester or obd ii scan tool to the dlc3.
2.  turn the ignition switch on and push the hand–held tester main switch on.
3.  select the item ”diagnosis / enhanced obd ii / data list / all / starter sig” and read its value displayed the hand–held tester.

Result:

Repair or replace harness and connector

Obd ii scan tool (excluding hand–held tester):

1 Inspect ecm

1. Turn the ignition switch on.
2.  measure the voltage between the terminals of the e4 ecm connector.

Standard:

3. Measure the voltage between the terminals of the e4 ecm connector when the engine is cranked.
4. Standard:

2 Inspect park/neutral position switch or clutch start switch

1. Inspect the park/neutral position switch. (A/t)

1.  disconnect the a2 park/neutral position switch connector.
2.  Check for continuity between each terminal shown below when the shift lever is moved to each range.

Standard:

3. Reconnect the park/neutral position switch connector.

2.  inspect the clutch start switch. (M/t)

1.  disconnect the c8 clutch start switch connector.
2.  Check for continuity between terminals when the switch on and off.

Standard:

3. Reconnect the clutch start switch connector.

3 Inspect ecm

1. Turn the ignition switch on.
2.  measure the voltage between the terminals of the e4 ecm connector.

Standard:

3. Measure the voltage between the terminals of the e4 ecm connector when the engine is cranked.

Standard:

4 Inspect ignition or starter switch assy

1. Disconnect the i10 ignition switch connector.
2.  check for continuity between the connector terminals shown in the chart below.

3. Reconnect the ignition switch connector.

5 Inspect ecm

1. Turn the ignition switch on.
2.  measure the voltage between the terminals of the e4 ecm connector.

Standard:

3. Measure the voltage between the terminals of the e4 ecm connector when the engine is cranked.

Standard:

Repair or replace harness or connector