Section 04 ENGINE MANAGEMENT (1503 4-TEC)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Finalizing ECM Replacement
After performing the required resets, ensure to
clear all faults from the newly replaced ECM.
Start the engine and increase engine speed above
5000 RPM to be sure no fault appears.
MPEM Replacement
Disconnect battery cables.
WARNING
Battery BLACK negative cable must always be
disconnected first and connected last.
Disconnect AMP connectors from MPEM. Re-
move retaining nuts on top.
Pull MPEM out.
Install the new MPEM in vehicle. Reconnect AMP
connectors to MPEM.
If the previous MPEM was read with B.U.D.S.
Transfer the data from the previous MPEM to the
new one using B.U.D.S.
Continue procedure as per FINALIZING MPEM
REPLACEMENT below.
If the previous MPEM was NOT read
with B.U.D.S.
– Enter the vehicle and engine serial numbers in
the
Vehicle
tab.
– Enter the old MPEM serial number in the
Part
Replacement
under
History
tab. Click on Add
part in History.
– Manually activate the options installed on vehi-
cle under the
Setting
tab.
NOTE:
The MPEM serial number can be found on
the MPEM sticker that also shows the P/N.
NOTE:
If an option is installed but not checked in
B.U.D.S., the information center will not display
that option. If an option is checked in B.U.D.S.
but not installed in vehicle, a fault code will be
generated.
Continue procedure as per FINALIZING MPEM
REPLACEMENT below.
Finalizing MPEM Replacement
Ensure to clear all faults from the newly replaced
MPEM.
Start engine and ensure no fault is active.
ENGINE WIRING HARNESS
4
R1503motr199A
5 6
7
8
10
9
11
12
3
2
1
19
20
18
17
14
13
15
16
4-TEC ENGINES
1. ECM connector
2. CTS connector
3. EGTS connector
4. CAPS connector
5. Fuel injector connector (cylinder 1)
6. Ignition coil connector (cylinder 1)
7. Fuel injector connector (cylinder 2)
8. Ignition coil connector (cylinder 2)
9. Fuel injector connector (cylinder 3)
10. Ignition coil connector (cylinder 3)
11. TOPS valve connector
12. OSPS connector
13. TPS connector
14. Idle bypass valve connector
15. MATS connector
16. Engine connector
17. MAPS connector
18. OPS connector
19. KS connector
20. CPS connector
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