Check Starter Circuit

1. Check Starting Sequence: Check to see if engine starts, runs for a few seconds then shuts off. If not, continue with Step 2. If yes, check engine speed sensor. Refer to procedure for alarm 00130 Check Engine RPM Sensor. 2. Check Fuse: Check Fuse F11. Replace fuse as required. Clear alarms, restart and check for repeat alarm(s). 3. Check Starter Solenoid Circuit a. Place SROS in START/RUN position. After buzzer sounds, check for power at starter solenoid and PM-8. If there is not a minimum of 11 VDC, check connectors and wiring between terminals for damage, moisture or corrosion. b. Inspect wiring to starter motor (see wiring schematic). Verify that there is no physical damage to wiring or battery cable end, and no damage or corrosion in connections. 4. Check Starter a. Inspect starter and wiring (see wiring schematic). Verify that there is no damage or corrosion. Wiring and battery cable must be clean and tight. b. Check voltage to starter motor. Must be above 10 VDC while cranking. c. Check resistance of starter motor. Refer to Section 2.11 for specifications. d. Check amperage draw of starter. Refer to Section 2.11 for specifications. 5. Check Battery Voltage a. Inspect cable ends and posts. Must be clean and tight, with no corrosion. b. Test voltage at battery with unit off. Must have minimum 11 VDC. c. Perform load test on battery. Follow battery manufacturer’s procedure. 6. Check Engine Control Unit (ENCU) a. Check voltage from fuse F4 through PM-15 and SP-24 to ENCU-22. Verify correct fuse (see Figure 2.7). Must have minimum 11 VDC with the battery connected and SROS in the OFF position. b. Check voltage from PM-32 to SP-34. Must have minimum 11 VDC with SROS in START/ RUN. If not, energize the run relay output using Component Test mode (refer to Section 5.2.4) and retest. c. Check for ground at ENCU-19 and PM-28 (at the negative battery cable connection). If ground not good, check connectors and wiring between terminals for damage, moisture or corrosion. d. Inspect engine speed sensor (ENSSN) and engine speed control unit (ENCU) connector pins and terminals. Verify that there is no physical damage to components, and no damage or corrosion in connectors. 7. Check for Correct Engine Oil: Check viscosity is correct for ambient conditions. Refer to Section 2.8.