Starter Operation Test

Before carrying out any starter test, make sure:

• Battery is fully charged and in good condition.
• Cable connections at battery, starter and solenoid are tight.
• Cables are in good condition.

1. Disconnect the negative battery cable.

2. Using booster cables and a fully charged battery or a power pack, carefully supply current directly to the starter.

2.1 Connect the negative booster cable or power pack cable to a good ground such as an engine support.

2.2 Temporarily touch the starter positive terminal.

WARNING! Sparks can occur when connecting jumper cables. To avoid fire hazard, be sure that no flammable liquids or fuel vapors are in the test area.

If starter turns at normal speed, test the starting circuit. Refer to STARTING SYSTEM subsection.

If starter turns slowly, carry out the STARTER VOLTAGE DROP TEST (AT BATTERY).

If starter does not turn, replace starter.

Starter Voltage Drop Test (at Battery)

NOTE: This test will confirm if starter draws too much current. Battery must be fully charged and in good condition.

1. Set the multimeter to Vdc.

REQUIRED TOOL: FLUKE 115 MULTIMETER (P/N 529 035 868)

2. Probe the battery posts.

3. Crank engine in drowned mode. Refer to ENGINE MANAGEMENT SYSTEM.

4. Read voltage while cranking.

NOTE: Battery voltage will drop approximately 2 Vdc and fluctuate with starter cranking load.

If the result is close to battery voltage, the starter is in good condition.

If the result is below battery voltage (- 2 Vdc and more), the starter may be defective.