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Home >> Toyota >> 2012 >> Prius V >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System [Diagnostic Codes (P0AA4-232 - U0424-537) & Circuit Tests] >> Hybrid Control System >> DTC P0AFC-129: Hybrid Battery Pack Sensor Module >> Inspection Procedure

Inspection Procedure

NOTE:

Performing the check procedures for a long time with the shift lever in N may cause DTC P3000-388 to be set.

HINT: 

If, after performing troubleshooting, it is necessary to replace the battery smart unit, voltages need to be confirmed after installing the new battery smart unit. Confirm that "Power Resource VB", "VL-Voltage before Boosting", and "VH-Voltage after Boosting" in the Data List are 220V or more with the power switch on (READY), park (P) selected, and the engine stopped. When the system is normal, the "Power Resource VB", "VL-Voltage before Boosting", and "VH-Voltage after Boosting" values should be almost equal (voltage boosting will not occur when the shift lever is in neutral). If the difference between each voltage exceeds the values specified below, there is a malfunction in the inverter with converter assembly.

Inspection voltage Maximum voltage difference
Difference between "Power Resource VB" and "VL-Voltage before Boosting" 50 V
Difference between "Power Resource VB" and "VH-Voltage after Boosting" 70 V
Difference between "VL-Voltage before Boosting" and "VH-Voltage after Boosting" 90 V