Vortec 1600 - Diagnostic Information and Procedures; Charging System Check; Starting System Check

3-8 Engine Electrical Industrial 1.6L
Step Action Normal Result(s) Abnormal Result(s)*
1
1. Disengage any power
transmission component, if
applicable.
2. Turn the ignition switch to
RUN, leaving the engine off.
The voltmeter shows approximately
12 V.
Charging System Check
2
Turn the ignition switch to START.
The engine cranks normally and the
starter does not make unusual
noises.
Starter Solenoid Does Not Click
Starter Solenoid Clicks, Engine
Does Not Crank
Starter Motor Noise Diagnosis
*Refer to the appropriate symptom diagnostic table for the applicable abnormal result.
Diagnostic Information and Procedures
Charging System Check
Starting System Check
Step Action Normal Result(s) Abnormal Result* / Action
1
Check the generator pulley drive
belt tension.
The drive belt is correctly
tensioned.
Adjust or replace the drive belt
Refer to Drive Belt Replacement in
Engine Cooling.
2
Visually inspect the battery for
physical damage.
The battery case is not cracked or
broken.
Battery damaged. Replace Battery
3
Inspect the battery terminal
connections.
The battery terminals are clean and
tight.
Refer to Fastener Tightening
Specifications; Clean or Replace
Battery Cable
4
Visually inspect the built–in battery
hydrometer (if equipped).
The battery hydrometer displays a
green dot (if equipped).
Battery Hydrometer Displays Dark
or Yellow Dot (if equipped)
5
Inspect the generator output
terminal for a loose connection.
The generator output terminal is
clean and tight.
Refer to Fastener Tightening
Specifications
6
Inspect the generator connector for
looseness or damaged terminals.
Generator connector terminals are
not loose or damaged.
Connector Repairs
7
Battery Not Operating Properly
The battery passes the load test. Replace Battery
8
Generator Not Operating Properly
The generator passes the electrical
test.
Refer to Generator Replacement
9
1. Connect a digital multimeter
across the battery terminals.
2. Start the engine and allow it to
idle.
The volts gauge in the instrument
cluster is in the normal range.
*Voltmeter Displaying High or Low
10
Increase the engine speed to 2500
RPM.
The volts gauge in the instrument
cluster is in the normal range.
*Voltmeter Displaying High or Low
*Refer to the appropriate symptom diagnostic table for the applicable abnormal result.
The voltmeter is in the normal
range.
The voltmeter is in the normal
range.