Ski-Doo Ski Doo MX Z 2005 [231/1429] Ecm connector

Ski-Doo Ski Doo MX Z 2005 [231/1429] Ecm connector
Section 05 ENGINE MANAGEMENT (POWER TEK)
Subsection 03 (COMPONENT INSPECTION, REPLACEMENT AND ADJUSTMENT)
Before replacing an ECM, always check electrical
connections. Make sure that they are very tight
and they make good contact and that they are
corrosion- free. Particularly check ECM ground
connections. Ensure that contacts are good and
clean. A defective module could possibly be
repaired simply by unplugging and replugging the
ECM. The voltage and current might be too weak
to go through dirty wire pins. Check carefully if
pins show signs of moisture, corrosion or if they
look dull. Clean pins properly and then coat them
prior to assembling as follows:
NOTE: Do not apply dielectric grease or other lu-
bricant on the ECM connectors.
If the newly replaced ECM works, try the old one
and recheck if it works.
Ensure that all electronic components are gen-
uine.Any modification on the wiring harness may
lead to generate fault codes or bad operation.
NOTE: For diagnostics purposes, use Vehicle
Communication Kit (VCK). See DIAGNOSTIC
PROCEDURES for proper connectors/adaptors.
NOTE: After disconnecting ECM connector for a
test and then reconnecting it, it will be neces-
sary to READ data from vehicle again to re-enable
B.U.D.S. communication. Otherwise, the follow-
ing message will appear at some point.
A33C57A
After a problem has been solved, ensure to clear
the fault(s) in the ECM using the VCK. Refer to
DIAGNOSTIC PROCEDURES subsection.
ECM Connector
Use this diagram to locate the pin numbers on
the ECM connector of the wiring harness when
performing tests.
A34E0LB
32
17
16
1
ECM CONNECTOR PIN-OUT (WIRING HARNESS SIDE)
Resistance Measurement
Whenmeasuringtheresistancewithanohmme-
ter, all values are given for a temperature of 20°C
(68°F). The resistance value of a resistance varies
with the temperature. The resistance value for
usual resistor or windings (such as solenoid) in-
creases as the temperature increases. However,
our temperature sensors are NTC types (Negative
Temperature Coefficient) and work the opposite
which means that the resistance value decreases
as the temperature increases. Take it into account
when measuring at temperatures different from
20°C(68°F). Use this table for resistance variation
relative to temperature for temperature sensors.
TEMPERATURE SENSOR TABLE
TEMPERATURE RESISTANCE (ohms)
ATS CTS FOR
°C °F
GAUGE ECM
-40 -40 72412
-35 -31 52637
-30 -22 28000 38681
-25 -13 28718
-20
-4
14500 733.8 21529
-15 5
587.7 16288
-10
14 474
12431
214 mmr2005-107

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