Components
COMPONENTS
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
CAUTION / NOTICE / HINT
NOTICE:
HINT:
Perform "Inspection After Repairs" after replacing the mass air flow meter (See
page ).
PROCEDURE
1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
NOTICE:
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON (do not run the engine).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Data List / MAF.
(e) Wait 30 seconds, and read the values on the Techstream.
Standard:
Item |
Condition |
Specified Condition |
---|---|---|
MAF |
|
Less than 0.5 g/sec. |
If the result is not as specified, replace the mass air flow meter sub-assembly.
If the result is as specified, inspect the mass air flow meter sub-assembly (See
page ).
Removal
REMOVAL
PROCEDURE
1. REMOVE MASS AIR FLOW METER SUB-ASSEMBLY
(a) Disconnect the mass air flow meter connector. |
|
(b) Remove the 2 screws and mass air flow meter.
Inspection
INSPECTION
PROCEDURE
1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY
(a) Perform a visual check for any foreign matter on the platinum hot wire (heater) of the mass air flow meter shown in the illustration. Text in Illustration
OK: There is no foreign material. |
|
(b) Check the intake air temperature sensor (built into the mass air flow meter).
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the mass air flow meter sub-assembly. Text in Illustration
|
|
Installation
INSTALLATION
PROCEDURE
1. INSTALL MASS AIR FLOW METER SUB-ASSEMBLY
(a) Install the mass air flow meter with the 2 screws. NOTICE: Make sure that the O-ring is not cracked or jammed when installing the mass air flow meter. HINT: Perform "Inspection After Repair" after replacing the mass air flow meter
sub-assembly (See page |
|
(b) Connect the mass air flow meter connector.
Electronic Circuit Inspection Procedure
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance measurements are standard values
measured at an ambient temperature of 20°C (68°F). Resistance meas ...
Noise Occurs
PROCEDURE
1.
CHECK NOISE CONDITION
(a) Check from which direction the noise comes (front left or right, or rear
left or right).
OK:
The location of the noise source can be determined.
NG
GO TO STEP 3
...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK COMBINATION METER ASSEMBLY
(a) Measure the resistance and voltage according to the value(s) in the table
below.
Tester Connection
Wiring Color
Terminal Description
Condition
...