TOYOTA RAV4 2006 Service Repair Manual

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–7
ES
A133299E01

ES–82AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
A127501E01

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–9
ES
HOW TO PROCEED WITH
TROUBLESHOOTING
HINT:
*: Use the intelligent tester.
NEXT
NEXT
HINT:
If the display indicates a communication fault in the tester,
inspect the DLC3.
NEXT
HINT:
Record or print DTCs and freeze frame data, if necessary.
NEXT
NEXT
NEXT
NEXT
1VEHICLE BROUGHT TO WORKSHOP
2CUSTOMER PROBLEM ANALYSIS
3CONNECT INTELLIGENT TESTER TO DLC3*
4CHECK DTC AND FREEZE FRAME DATA*
5CLEAR DTC AND FREEZE FRAME DATA*
6CONDUCT VISUAL INSPECTION
7SET CHECK MODE DIAGNOSIS*

ES–102AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
If the engine does not start, first perform the "CHECK DTC"
procedures and "CONDUCT BASIC INSPECTION"
procedures below.
B
A
NEXT
B
A
NEXT
B
A
8CONFIRM PROBLEM SYMPTOMS
Result Proceed to
Malfunction does not occur A
Malfunction occurs B
GO TO STEP 10
9SIMULATE SYMPTOMS
10CHECK DTC*
Result Proceed to
Malfunction code A
No code B
GO TO STEP 12
11REFER TO DTC CHART
GO TO STEP 14
12CONDUCT BASIC INSPECTION
Result Proceed to
Malfunctioning parts not confirmed A
Malfunctioning parts confirmed B
GO TO STEP 17

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–11
ES
B
A
NEXT
B
A
NEXT
NEXT
NEXT
NEXT
13REFER TO PROBLEM SYMPTOMS TABLE
Result Proceed to
Malfunctioning circuit confirmed A
Malfunctioning parts confirmed B
GO TO STEP 17
14CHECK ECM POWER SOURCE CIRCUIT
15CONDUCT CIRCUIT INSPECTION
Result Proceed to
Malfunction not confirmed A
Malfunction confirmed B
GO TO STEP 18
16CHECK FOR INTERMITTENT PROBLEMS
GO TO STEP 18
17CONDUCT PARTS INSPECTION
18IDENTIFY PROBLEM
19ADJUST AND/OR REPAIR

ES–122AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
NEXT
20CONDUCT CONFIRMATION TEST
END

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–13
ES
CHECK FOR INTERMITTENT
PROBLEMS
HINT:
Inspect the vehicle's ECM using check mode. Intermittent
problems are easier to detect with the intelligent tester when
the ECM is in check mode. In check mode, the ECM uses 1
trip detection logic, which is more sensitive to malfunctions
than normal mode (default), which uses 2 trip detection logic.
1. Clear the DTCs (see page ES-35).
2. Switch the ECM from normal mode to check mode using
the intelligent tester (see page ES-38).
3. Perform a simulation test.
4. Check and wiggle the harness(es), connector(s) and
terminal(s).

ES–142AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
BASIC INSPECTION
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.
NOTICE:
Conduct this check with the engine stopped and ignition
switch OFF.
NG
OK
NG
OK
NG
OK
(a) Visually check that the air filter is not excessively
contaminated with dirt or oil.
NG
OK
NG
1CHECK BATTERY VOLTAGE
Result Proceed to
11 V or more OK
Below 11 V NG
CHARGE OR REPLACE BATTERY
2CHECK WHETHER ENGINE WILL CRANK
PROCEED TO PROBLEM SYMPTOMS
TA B L E
3CHECK WHETHER ENGINE STARTS
GO TO STEP 6
4CHECK AIR FILTER
REPLACE AIR FILTER
5CHECK IDLING SPEED
TROUBLESHOOT IDLING SPEED AND
PROCEED TO NEXT STEP

2AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–15
ES
OK
NG
OK
NG
OK
6CHECK FUEL PRESSURE
TROUBLESHOOT FUEL PRESSURE AND
PROCEED TO NEXT STEP
7CHECK FOR SPARK
TROUBLESHOOT SPARK AND PROCEED
TO NEXT STEP
PROCEED TO PROBLEM SYMPTOMS TABLE

ES–162AZ-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
REGISTRATION
NOTICE:
The Vehicle Identification Number (VIN) must be input
into the replacement ECM.
HINT:
The VIN is a 17-digit alphanumeric number. The intelligent
tester is required to register the VIN.
1. DESCRIPTION
This registration section consists of 3 parts: Input
Instructions, Read VIN and Write VIN.
(a) Input Instructions: Explains the general VIN input
instructions when using the intelligent tester.
(b) Read VIN: Explains the VIN reading process in a
flowchart. This process allows the VIN stored in the
ECM to be read in order to confirm that the two
VINs, provided with the vehicle and stored in the
vehicle's ECM, are the same.
(c) Write VIN: Explains the VIN writing process in a
flowchart. This process allows the VIN to be input
into the ECM. If the ECM is changed, or the vehicle
VIN and ECM VIN do not match, the VIN can be
registered or overwritten in the ECM by following
this procedure.
2. INPUT INSTRUCTIONS
(a) Intelligent tester
The arrow buttons (UP, DOWN, RIGHT and LEFT)
and numerical buttons (0 to 9) are used to input the
VIN.
(b) Cursor Operation
To move the cursor around the tester screen, press
the RIGHT and LEFT buttons.
(c) Alphabetical Character Input
(1) Press the UP and DOWN buttons to select the
desired alphabetical character.
(2) After selection, the cursor should move.
(d) Numeric Character Input
(1) Press the numerical button corresponding to
the number that you want to input.
(2) After input, the cursor should move.
HINT:
Numerical characters can also be selected by
using the UP and DOWN buttons.
(e) Correction
(1) When correcting the input character(s), put the
cursor onto the character using the RIGHT and
LEFT buttons.
(2) Select or input the correct character using the
UP/DOWN buttons, or the numerical buttons.
(f) Finishing Input Operation
(1) Make sure that the input VIN matches the
vehicle VIN after input.
(2) Press the ENTER button on the tester.