Snowmobile Ski Doo REV SERIES (2004 year). Instruction - part 21

 

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Snowmobile Ski Doo REV SERIES (2004 year). Instruction - part 21

 

 

Section 03 TROUBLESHOOTING

Subsection 04 (ELECTRICAL SYSTEM)

A32E3US

Install supply cable to diagnostic connector

of snowmobile as per shop manual

procedure. Do not connect any supply

voltage before starting the vehicle. Start

cranking over the engine. While the engine

is being cranked, connect 12 V supply to the

2-position housing of the supply cable.

Respect polarity +12 V to RED wire, ground

to BLACK wire,  and check for spark.

Fault is on the motor side of

ignition system.  Continue

with the following.

Check for

spark at

spark plug

No spark

Check that tether

DESS cord switch,

ignition switch and

engine cut-out

switch are in place

and in the run

position.

One of the

switches was

left in the off

position.

No spark

Replace spark plug

and retest.

Spark returns

Spark plug was

at fault.

OK

360 W - 2 CYLINDER

OK

SYMPTOM

NO START AND

NO SPARK

Check stator ignition

generator coil.

Replace stator

and retest.

OK

Check ignition coil.

Replace spark plug

cap and retest.

 w

OK

Replace ignition coil

and retest.

OK

Check  connection 11-DA, 11-DE,

11-DC from MPEM.

Replace MPEM

and retest.

OK

No

good

Check trigger coil.

Replace trigger coil

and retest.

OK

No

good

No

good

No

good

No

good

Disconnect the 6-HC connector

that has the BLACK/WHITE,

WHITE/GRAY, and the

BLACK/GREEN wires to the tether

cord switch. Place a jumper wire

between the BLACK/WHITE and

the BLACK/GREEN wires and

retest for spark.

Disconnect the 6-HG connector

that has the BLACK/YELLOW

and the BLACK wires and

retest for spark.

No spark

No spark

Fault is in the tether

cord switch. Inspect

and retest.

OK

Fault is in the

engine cut-out

switch.  Inspect

and retest.

OK

Spark

returns

Spark

returns

Spark

 returns

No

spark

IGNITION SYSTEM DIAGNOSTIC FLOW CHART

Check spark plug cap.

OK

Spark

returns

No spark

Fault is in the

charging system.

Refer to the

charging system

diagnostic flow

chart to find

the problem.

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65

Section 03 TROUBLESHOOTING
Subsection 04 (ELECTRICAL SYSTEM)

Symptom

Battery goes dead

after unit sits for a

long period of time.

Check battery.

No good

Replace battery.

System

is working

battery was

at fault.

Good

With engine stopped,

by using an ammeter

in the milli amp scale,

check for a draw

from the battery.

Once a current draw

is detected start

disconnection wire

connections untill

the current draw

stops.

Repair or replace

defective part that

was drawing current.

All is well.

No draw

Symptom

Check battery.

Replace battery.

Battery will not stay

charged unit even if

is often used.

By using an ammeter

and voltmeter

connect to

confirm problem.

No good

Perform magneto/

generator tests.

Check connections.

Replace.

Check applicable

fuses

Regulator/rectifier faulty:

replace and reconfirm

that system is now

properly functioning.

Replace and

reconfirm that

system is now

properly functioning.

Burnt

No good

Good

When engine running

at 3000 RPM,

ammeter shows no

charge occuring

Good

Good

Symptom

Bulbs are burnt and

battery has very little

electrolyte in it.

Check battery.

With engine running

at 5000 RPM, by

using an ammeter

and voltmeter

connect to

confirm problem.

No good

Good

Voltage is to high

Replace regulator/

rectifier assembly

and reconfirm that

system is now

properly functioning.

Regulator/rectifier

was at fault.

Good

DC charging system all accessories are DC operated

A32E3VS

360 W - 2 CYLINDER

System is

working battery

was at fault.

CHARGING SYSTEM DIAGNOSTIC FLOW CHART

By using an ammeter

and voltmeter

connect to

confirm problem.

By using an ammeter

and voltmeter

connect to

confirm problem.

66

mmr2004-Rev

Section 03 TROUBLESHOOTING

Subsection 04 (ELECTRICAL SYSTEM)

SYMPTOM

THE MPEM DOES NOT WORK.

CONDITION

NORMAL USE

TEST/INSPECTION

1. Check that high tension coil wires do not touch any metal parts.

a. Short circuit.

Isolate and reroute wires.

SYMPTOM

ENGINE STALLS.

CONDITION

NORMAL USE

TEST/INSPECTION

1. Refer to IGNITION SYSTEM DIAGNOSTIC FLOW CHART.

SYMPTOM

ENGINE IS MISFIRING — ERRATIC SPARK AT SPARK PLUG.

CONDITION

RIDING ON WET SNOW.

1. Check if spark plug wires and/or spark plug cap seals are sealing out moisture.

a. Defective wires and/or seals.

Replace defective part.

TEST/INSPECTION

2. Check if ignition system wiring harness connectors are in good condition and/or are sealing out moisture.

a. Loose connectors, corroded terminals or defective parts.

Clean terminals and apply silicone dielectric grease. Replace defective parts.

CONDITION

NORMAL USE

TEST/INSPECTION

1. Verify misfiring by observing flash of stroboscopic timing light; unplug connectors between

magneto/generator and vehicle wiring harness to isolate problem. Check condition of connectors.

a. Defective spark plug(s) and/or cable(s)/cap(s). Defective electrical system wiring harness and/or

accessories and/ignition cut-out switches. Condition of connector terminals.

Replace defective parts and/or repair damaged wires. Replace defective switch(es). Clean terminals and

apply silicone dielectric grease.

CONDITION

RIDING IN DEEP AND THICK SNOW.

1. Perform all verifications outlined under ENGINE DOES NOT START — NO SPARK AT SPARK PLUG.

TEST/INSPECTION

2. Check spark plugs. Proceed with spark plug analysis in order to identify source of problem.

a. Defective and/or worn spark plug(s) and/or cable(s) and/or cap(s). Engine related problem.

Replace defective part(s). Proceed with ignition system testing procedures. Perform engine analysis.

mmr2004-Rev

67

Section 03 TROUBLESHOOTING
Subsection 04 (ELECTRICAL SYSTEM)

SYMPTOM

FOULED (BLACK) SPARK PLUG TIP.

CONDITION

NORMAL USE

1. Check carburetor.

a. Carburetion is too rich.

Adjust according to specifications (refer to TECHNICAL DATA).

2. Check injection oil consumption.

a. Injection pump flow is too high.

Adjust according to specifications or replace.

3. Check oil quality.

a. Poor quality oil (creation of deposits).

Use Bombardier injection oil.

TEST/INSPECTION

4. Check engine compression.

a. Leaking piston ring(s).

Replace.

SYMPTOM

SPARK PLUG TIP IS LIGHT GRAY.

CONDITION

NORMAL USE

1. Refer to ENGINE SLOWS DOWN OR STOPS AT HIGH RPM and check items listed.

2. Check spark plug heat range.

a. Spark plug heat range is too high.

Replace by Bombardier’s recommended spark plug (refer to TECHNICAL DATA).

3. Check if air intake silencer leaks.

a. Air surplus coming from opening(s) located between halves.

Seal.

4. Check carburetor adapter collars.

a. Loose collar(s).

Tighten.

5. Check carburetor adapter(s).

a. Cracked or deformed adapter(s).

Replace.

TEST/INSPECTION

6. Check if primary compression leaks.

a. Primary compression leaks.

Perform leak down test and repair as necessary.

68

mmr2004-Rev

 

 

 

 

 

 

 

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