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Battery 2 Voltage Low – Data Valid but Below Normal Operating Range – Moderately Severe Level
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Overview
Battery 2 Voltage Low – Data Valid but Below Normal Operating Range – Moderately Severe Level
| CODE | REASON | EFFECT |
| Fault Code: 477 PID: P444 SPN: 1376 FMI: 1/18 LAMP: Warning SRT: |
Battery 2 Voltage Low – Data Valid but Below Normal Operating Range – Moderately Severe Level. |
ECM voltage supply approaching a level at which unpredictable operation will occur. |
 Isolated Battery Supply Circuit
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Circuit Description
The 12-VDC isolated battery circuit provides operating power to the ECM. This supply is used by the ECM to provide the pulse width modulated signal to the fuel control valve.
Component Location
100-002 for the component location.
Shop Talk
This fault is usually caused by loose or corroded connections, a blown fuse or a tripped circuit breaker.
Refer to Troubleshooting Fault Code t05-477
Last Modified: 15-Jul-2010
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