Alternator (Battery Charger) Not Charging
electrical
Description
The alternator current stayed below -1.0 amps for three continuous minutes while running, and the unit alarms only or shuts down if configured.
Activation Conditions
Unit is running and the current flow is less than -1.0 amps between the alternator and the battery for three continuous minutes.
Unit Behavior
Engine Operation: Alarm only or (if Alternator Check Shutdown configuration is set to YES (configured for shutdown) engine and unit shutdown and alarm. Electric Operation: Alarm only regardless of configuration setting.
Reset Conditions
Auto reset (if not shutdown) when battery charger is charging or alarm may be manually reset using the display mounted keys or by turning the unit off, then back on again.
Corrective Actions
1. Check Battery Charger Wiring a. Check output and ground wire (unit OFF.) Negative lead on Ground terminal Positive lead on Output terminal = same as battery voltage. b. Check battery charger input. Must be within voltage limits shown in Section 2.11. Must be between the two red Wires. c. Inspect harness and control box connector pins and terminals. (See wiring schematic Section 10.3.) Verify there is no physical damage to harness, and no damaged or corroded pins. d. Check output and ground wire voltages (unit running.) When the unit is started, battery voltage at the battery will begin near 12.0 VDC, and slowly rise toward 13.5 VDC as the battery charges. NOTE Do not test for voltage at output connector of battery charger without connector being connected to the battery. Without the battery connected any reading will be very inaccurate. (Refer to Section 8 for more information on checking battery charger.) e. Check output (with the unit running). When the unit is started, voltage at the battery will begin near