Inspection Procedure

WARNING: This page is about a different car, the 2007 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0101)

Connect a intelligent tester to the DLC3.
Turn the ignition switch to ON.
Turn the tester ON.
Select the following menu items; DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.

Read DTCs.

Result

RESULT REFERENCE CHART

Display (DTC output)	Proceed to
Only P0101 is output	A
P0101 and other DTCs are output	B

HINT:

If any DTCs other than P0101 are output, troubleshoot those DTCs first.

B: Go TO RELEVANT DTC CHART

A: Go to Next Step

CHECK AIR INDUCTION SYSTEM
1. Check the air induction system for vacuum leakage.
  OK:
  
  No leakage from air induction system.
NG: REPAIR OR REPLACE AIR INDUCTION SYSTEM

OK: Go to Next Step
CHECK VENTILATION HOSE
1. Check the ventilation hose.
  OK:
  
  Ventilation hose is connected correctly and is not damaged.
NG: REPAIR OR REPLACE VENTILATION HOSE

OK : REPLACE MASS AIR FLOW METER