DTC P1530: Short in Battery Current Sensor Circuit; DTC P1531: Open in Battery Current Sensor Circuit; DTC P1532: Battery Current Sensor Circuit: Description
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The battery current sensor assembly installed on the negative (-) battery terminal detects the amount of current supplied from the generator.
The battery current sensor assembly changes current to voltage (at the negative (-) battery terminal) and sends it to the ECM. The ECM controls the voltage of the generator based on the signals from the battery current sensor assembly.
| DTC No. |
DTC Detection Condition |
Trouble Area |
| P1530 |
- Engine speed is 500 r/min or more, battery voltage is 10.9 V or more, and 1 second or more have elapsed after starting.
- Battery current sensor output is less than 0.347 V, and duration of the malfunction is 0.5 seconds or more (1-trip detection logic).
|
- Battery current sensor assembly
- Open or short to GND in battery current sensor circuit
- ECM
|
| P1531 |
- Engine speed is 500 r/min or more, battery voltage is 10.9 V or more, and 1 second or more have elapsed after starting.
- Battery current sensor output is more than 4.653 V, and duration of the malfunction is 0.5 seconds or more (1-trip detection logic).
|
- Battery current sensor assembly
- Short to +B or VC in battery current sensor circuit
- ECM
|
| P1532 |
- Ignition switch ON
- Current sensor fixing diagnosis: The difference between the maximum and minimum current value when changing charging states is less than 0.07 V, and the charging state changes 10 times or more in succession when malfunctioning (1-trip detection logic).
- Charging side properties diagnosis: After the alternator target DUTY has changed from 60% or more to less than 40%, with the alternator target DUTY is less than 40%, the battery voltage is less than 13.2 V and the battery current sensor voltage is 2.6 V or more and less than 5 V, and the duration of the malfunction is 30 seconds or more (1-trip detection logic).
- Discharge side properties diagnosis: After the alternator target DUTY has changed from less than 40% to 60% or more, with the alternator target DUTY at 60% or more, the battery voltage is more than 13.7 V and the battery current sensor voltage is 0 V or more and less than 2.4 V and the duration of malfunction is 30 seconds or more (1-trip detection logic).
|
- Battery current sensor assembly
- Short in battery current sensor circuit
- ECM
|