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• Be sure to read "Precautions for Electrical Circuit
Service in Section 00" before inspection and observe
what is written there.
• ECM replacement:
When substituting a known-good ECM, check for the
following conditions. Neglecting this check may cause
damage to a known-good ECM.
– Resistance value of all relays and actuators is as
specified respectively.
– MAP sensor, electric load current sensor (for J20
engine), A/C refrigerant pressure sensor (if
equipped with A/C), accelerator pedal position
(APP) sensor, TP sensor and CO adjust resistor (if
not equipped with A/F sensor) are in good condition
and none of power circuits of these sensors is
shorted to ground.
• Communication of ECM, BCM, combination meter,
keyless start control module (if equipped), ABS /
ESP® control module, 4WD control module (if
equipped), steering angle sensor (if equipped) and
TCM (for A/T model) is established by CAN
(Controller Area Network). (For more detail of CAN
communication for ECM, refer to "CAN
Communication System Description: For Petrol
Engine Model"). Therefore, handle CAN
communication line with care referring to "Precaution
for CAN Communication System in Section 00".
• Immobilizer transponder code registration after
replacing ECM:
When ECM is replaced with new one or with another
one, make sure to register immobilizer transponder
code with ECM correctly according to "Procedure after
ECM Replacement: For Petrol Engine Model in
Section 10C".
Precautions for DTC Troubleshooting
• Before troubleshooting, be sure to read the
"Precautions of ECM Circuit Inspection: For Petrol
Engine Model".
• When measuring circuit voltage, resistance and/or
pulse signal at ECM connector, connect the special
tool to ECM and/or the ECM connectors referring to
"Inspection of ECM and Its Circuits: For Petrol Engine
Model".
• Upon completion of inspection and repair work,
perform "DTC Confirmation Procedure" and confirm
that the trouble has been corrected.
Engine General Information and Diagnosis: For Petrol Engine Model 1A-2
Precautions of ECM Circuit Inspection
• ECM connectors are waterproofed. Each terminal of
• Wire colors of the special tool's connectors are
Precautions of Electric Throttle Body System
Calibration
After performing one of works described below, it is
necessary to re-register the completely closed throttle
valve reference position stored in memory of ECM. (For
detailed information, refer to "Description of Electric
Throttle Body System Calibration: For Petrol Engine
Model".) For the procedure to register such data in ECM,
refer to "Electric Throttle Body System Calibration: For
Petrol Engine Model in Section 1C".
• To shut off backup power of ECM for such purposes of
• To erase DTCs P0122, P0123, P0222, P0223, P0607,
S6JB0A1110003
• To replace ECM
• To replace throttle body and/or accelerator pedal
the ECM connectors is sealed up with the grommet.
Therefore, when measuring circuit voltage, resistance
and/or pulse signal at ECM connector, do not insert
the tester's probe into the sealed terminal at the
harness side. When measuring circuit voltage,
resistance and/or pulse signal at ECM connector,
connect the special tool to the ECM connectors. And,
insert the tester's probe into the special tool's
connectors at the harness side, and then measure
voltage, resistance and/or pulse signal. Or, ECM and
its circuits may be damaged by water.
different from the ones of the ECM connectors.
However, the circuit arrangement of the special tool's
connectors is the same as the one of the ECM
connectors. Therefore, measure circuit voltage and
resistance by identifying the terminal location subject
to the measurement.
battery replacement or "DOME" fuse removal
P2101, P2102, P2103, P2111, P2119, P2122, P2123,
P2127, P2128, P2135 and/or P2138
position (APP) sensor assembly
S6JB0A1110004
S6JB0A1110005
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