Starting System - Starter Test (continued)
16-35prose procedureCranking voltage/current specs given per starter output rating: 1.2 kW and 1.4 kW.
(Continued from step 2) - If the starter still does not crank the engine, remove the starter and diagnose its internal problems.
- If the starter cranks the engine, check for an open in the BLK/WHT wire circuit between the starter and ignition switch, and connectors. Check the ignition switch.
- 3Check for wear or damage: The starter should crank the engine smoothly and steadily. If the starter engages, but cranks the engine erratically, remove the starter motor. Inspect the starter, drive gear, and flywheel ring gear for damage. Check the drive gear overrunning clutch for binding or slipping when the armature is rotated with the drive gear held. Replace the gears if damaged.
- 4Check cranking voltage and current draw. Voltage should be no less than specified below: 1.2 kw and 1.4 kw: 8 volts. Current should be no greater than specified below: 1.2 kw: 280 amperes; 1.4 kw: 350 amperes. If voltage is too low, or current draw too high, check for:
- 5Check cranking min⁻¹ (rpm): Engine speed during cranking should be above 100 min⁻¹ (rpm).
- 6Check the starter disengagement: Turn the ignition switch to "Start" and release to "Run." The starter drive gear should disengage from the flywheel ring gear. If the drive gear hangs up on the flywheel ring gear, check: