Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p1c00 battery monitor module "a" performance

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h4do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p1c00 battery monitor module "a" performance

DTC DETECTING CONDITION:

Immediately at fault recognition

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.

STEP	CHECK	YES	NO
1.CHECK DTC. Check for DTC. Read Diagnostic Trouble Code (DTC)	Is P1C00 displayed in «Present fault»-	Replace the battery sensor. Battery Sensor	Even if DTC is detected, it has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.

1. OUTLINE OF DIAGNOSIS

Judge as NG when faulty signal of each part is sent from the battery sensor.

2. COMPONENT DESCRIPTION

The battery sensor monitors the data of battery voltage, current, temperature, etc. ECM receives these data via LIN communication with the battery sensor.

3. EXECUTION CONDITION

Secondary Parameters	Execution condition
Ignition switch	ON

4. GENERAL DRIVING CYCLE

Perform the diagnosis continuously after the enable conditions have been established.

5. DIAGNOSTIC METHOD

Judge as NG when the following conditions are established.

Judgment Value

Malfunction Criteria	Threshold Value
Receives «Internal abnormal»	ON
or
Receives «Temperature Sensor Error»	ON
or
Receives «Voltage Sensor Error»	ON
or
Receives «Current Sensor Error»	ON

Time Needed for Diagnosis: Less than 1 second

Malfunction Indicator Light Illumination: Does not illuminate.

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