126
RAV4 (EM03T0U)
Engine Control for 2AZ–FE
2. Control System
∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensor to the engine control module.
And the control signal is output to TERMINALS #10, #20, #30 and #40 of the engine control module to operate the
injector (Inject the fuel). The SFI system controls the fuel injection operation by the engine control module in response to
the driving conditions.
∗ ESA system
The ESA system monitors the engine condition through the signals input to the engine control module from each sensor.
The best ignition timing is decided according to this data and the memorized data in the engine control module and the
control signal is output to TERMINALS IGT1, IGT2, IGT3 and IGT4. This signal controls the igniter to provide the best
ignition timing for the driving conditions.
3. Diagnosis System
With the diagnosis system, when there is a malfunction in the engine control module signal system, the malfunctioning
system is recorded in the memory. The malfunctioning system can be found by reading the code displayed by the
malfunction indicator lamp.
4. Fail–safe System
When a malfunction has occurred in any system, if there is a possibility of engine trouble being caused by continued control
based on the signals from that system, the fail–safe system either controls the system by using data (Standard values)
recorded in the engine control module memory or else stops the engine.
: Parts Location
Code See Page Code See Page Code See Page
A3 56 B9 53 (2AZ–FE) B26 53 (2AZ–FE)
A4 56 B10 53 (2AZ–FE) B29 53 (2AZ–FE)
A9 A 52 (2AZ–FE) B11 53 (2AZ–FE) B30 C 53 (2AZ–FE)
A19 52 (2AZ–FE) B12 53 (2AZ–FE) E3 54
A35 56 B13 53 (2AZ–FE) E10 54
A36 56 B14 53 (2AZ–FE) E13 54
A38 56 B15 53 (2AZ–FE) E19 54
B1 53 (2AZ–FE) B16 53 (2AZ–FE) E46 55
B2 53 (2AZ–FE) B17 53 (2AZ–FE) E68 55
B3 53 (2AZ–FE) B18 53 (2AZ–FE) E69 55
B4 B 53 (2AZ–FE) B19 53 (2AZ–FE) E70 55
B6 53 (2AZ–FE) B21 53 (2AZ–FE) S1 61
B7 53 (2AZ–FE) B22 53 (2AZ–FE) S3 61
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