Section 06 ENGINE MANAGEMENT (RFI)
Subsection 03 (COMPONENT ADJUSTMENT, INSPECTION AND REPLACEMENT)
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– Repair wire/connector if defective. If wires
test good, try a new ECM.
– If it does not read 12 V, check continuity of RAVE
solenoid supply circuit from VCM as per follow-
ing table.
RAVE SOLENOID
CONNECTOR
VCM ROUND
CONNECTOR
2 7-D
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– Repair wire/connector if defective. If wires
test good, try a new VCM.
PARTS REPLACEMENT
ECM AND VCM
General
Prior to replacing a suspected ECM or VCM, en-
sure that all the recommendations in GENERAL at
the beginning of this section have been followed.
IMPORTANT: When the ECM is replaced, the
Closed TPS and ignition timing must be reset.
Refer to ADJUSTMENT in this section for the TPS
and to IGNITION SYSTEM section for the ignition
timing.
NOTE: If Closed TPS reset or ignition timing set-
ting are not performed, the engine will run with
reduced performance. No fault code will be gen-
erated.
To allow transferring the previous recorded in-
formation from the old ECM to the new one,
use the vehicle communication kit (VCK) with
the B.U.D.S. software. Use Replace ECM in the
Module menu. Follows instructions in its help
system.
NOTE: If the old ECM is working, it must be read
inside B.U.D.S. prior to removing it from the ve-
hicle to carry vehicle information and history to
the new ECM. Otherwise, perform the operations
describedinIFTHEPREVIOUSECMWASNOT
READ with B.U.D.S. below.
ECM Replacement
Disconnect battery cables.
WARNING
Battery BLACK negative cable must always be
disconnected first and connected last.
Disconnect both ECM connectors.
Unscrew retaining screws and remove the ECM
from its bracket.
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