Suzuki XL7 2007 Service Manual page 889

Starter Motor Noise Diagnosis
Diagnostic Aids
Inspect the flywheel ring gear for damage or unusual wear.
Test Description
The number below refers to the step number on the diagnostic table.
5.
A starter motor that remains engaged after engine start up can be cause by a starter relay that hangs up or a low
current short to B+ on the starter solenoid crank voltage circuit. Verify the integrity of the starter solenoid crank voltage
circuit before replacing the starter motor.
Step
Did you perform the Diagnostic System Check - Vehicle?
1
Start the engine.
Does the starter operate normally?
2
Start the engine while listening to the starter motor turn.
Is there a loud "whoop", that may sound like a siren if the
3
engine is revved while the starter is engaged, after the engine
starts, but while the starter is still held in the engaged position?
Do you hear a "rumble", a "growl", or, in some cases, a "knock"
4 as the starter is coasting down to a stop after starting the
engine?
NOTE
This is often diagnosed as a starter drive gear
hang-in or a weak solenoid.
5
When the engine is cranked, do you hear a high-pitched whine
after the engine cranks and starts normally?
Inspect the flywheel ring gear for the following:
• Chipped gear teeth
6
• Missing gear teeth
• Milled teeth
Is the flywheel bent, or does it have damaged teeth?
1. Remove the starter motor. Refer to "Starter Motor
Replacement".
7
2. Inspect the starter motor bushings and clutch gear.
Does the clutch gear have chipped or milled teeth or worn
bushings?
Replace the flywheel. Refer to "Engine Flywheel
8 Replacement: ".
Did you complete the replacement?
Replace the starter motor. Refer to "Starter Motor
9 Replacement".
Did you complete the replacement?
Operate the system in order to verify the repair.
10
Did you correct the condition?
Action
Starting System:
Yes
Go to "Diagnostic
Go to Step 2
Vehicle Diagnostic
Go to "Testing for
Intermittent
Conditions and Poor
Connections: "
Go to Step 6
Go to Step 7
Go to Step 8
Go to Step 8
Go to Step 9
Go to Step 10
Go to Step 10
System OK
1I-17
No
System Check -
Information: "
Go to Step 3
Go to Step 4
Go to Step 5
Go to Step 7
Go to Step 7
Go to Step 10
—
—
Go to Step 3