Basic Inspection

WARNING: This page is about a different car, the 2009 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

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

CHECK BATTERY VOLTAGE

NOTE: Carry out this check with the engine stopped and ignition switch OFF.

RESULT CHART

Result	Proceed To
11 V or more	OK
Below 11 V	NG

NG: CHARGE OR REPLACE BATTERY

OK: Go to next step

CHECK WHETHER ENGINE WILL CRANK
NG: PROCEED TO PROBLEM SYMPTOMS TABLE

OK: Go to next step
CHECK WHETHER ENGINE STARTS
NG: GO TO STEP 6

OK: Go to next step
CHECK AIR FILTER
1. Visually check that the air filter is not excessively contaminated with dirt or oil.
  NG: REPLACE AIR FILTER (See REMOVAL )
  
  OK: Go to next step
CHECK IDLING SPEED
HINT:

Refer to Engine Mechanical (See ON-VEHICLE INSPECTION ).

NG: PROCEED TO PROBLEM SYMPTOMS TABLE

OK: Go to next step
CHECK FUEL PRESSURE
HINT:

Refer to Fuel System (See ON-VEHICLE INSPECTION ).

NG: PROCEED TO FUEL SYSTEM AND CONTINUE TROUBLESHOOTING

OK: Go to next step
CHECK FOR SPARK
HINT:

Refer to Ignition System (See ON-VEHICLE INSPECTION ).

NG: PROCEED TO IGNITION SYSTEM AND CONTINUE TROUBLESHOOTING

OK: PROCEED TO PROBLEM SYMPTOMS TABLE