In the case of the vehicle equipped with
immobilizer or button engine start system, perform "Key Teaching"
procedure together (Refer to "Immobilizer" or "Button Engine Start
System in BE group). |
1. |
Turn ignition switch OFF and disconnect the
negative (-) battery cable. |
2. |
Disconnect the ECM Connector (A).

|
3. |
Remove the battery (Refer to "Charging System"
in EE group). |
4. |
Remove the mounting bolts (A) and a nut (B),
and then remove the ECM (C).

|
In the case of the vehicle equipped with
immobilizer or button engine start system, perform "Key Teaching"
procedure together (Refer to "Immobilizer" or "Button Engine Start
System in BE group). |
1. |
Installation is reverse of
removal.
ECM
installation bolt:
7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~
8.7 lb-ft)
|
|
ECM Problem Inspection
Procedure |
1. |
TEST ECM GROUND CIRCUIT: Measure resistance
between ECM and chassis ground using the backside of ECM harness
connector as ECM side check point. If the problem is found, repair
it.
|
2. |
TEST ECM CONNECTOR: Disconnect the ECM
connector and visually check the ground terminals on ECM side and
harness side for bent pins or poor contact pressure. If the problem
is found, repair it. |
3. |
If problem is not found in Step 1 and 2, the
ECM could be faulty. If so, make sure there were no DTC's before
swapping the ECM with a new one, and then check the vehicle again.
If DTC's were found, examine this first before swapping
ECM. |
4. |
RE-TEST THE ORIGINAL ECM: Install the original
ECM (may be broken) into a known-good vehicle and check the vehicle.
If the problem occurs again, replace the original ECM with a new
one. If problem does not occur, this is intermittent problem (Refer
to “Intermittent Problem Inspection Procedure” in Basic Inspection
Procedure).
|
VIN Programming Procedure
VIN (Vehicle
Identification Number) is a number that has the vehicle's information
(Maker, Vehicle Type, Vehicle Line/Series, Body Type, Engine Type,
Transmission Type, Model Year, Plant Location and so forth. For more
information, please refer to the group "GI" in this SERVICE MANUAL). When
replacing an ECM, the VIN must be programmed in the ECM. If there is no
VIN in ECM memory, the fault code (DTC P0630) is set.
The programmed VIN cannot be changed. When
writing the VIN, confirm the VIN
carefully |
1. |
Select "VIN Writing" function in "Vehicle S/W
Management". |
2. |
Select "Write VIN" in "ID
Register".

|
3. |
Input the VIN.
Before inputing the VIN, confirm the VIN
again because the programmed VIN cannot be
changed. |

|
4. |
Turn the ignition switch OFF, then back
ON. |