DTC U3003-16; Battery Power Supply: Notes
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION & POSSIBLE CAUSE
| DTC U3003:16 |
Battery power supply |
| DETECTION CONDITION |
- Voltage of 8 V or less detected by EPS CM internal ignition voltage observation.
|
| FAIL-SAFE FUNCTION |
- Control is maintained by gradually decreasing the motor control current
- However, control is inhibited if the power supply voltage is the specified value of less.
- Power steering malfunction indicator light: Illuminated
|
| POSSIBLE CAUSE |
- Battery and/or generator malfunction
- EPS 60A fuse malfunction
- Malfunction in the wiring harness between EPS CM terminal 1B and battery
- Open circuit in the wiring harness between EPS CM terminal 1A and body ground
|
| SYSTEM WIRING DIAGRAM |
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