DTC P0AA4-232: Hybrid Battery Negative Contactor Circuit Stuck Closed [10/2014 - 10/2015]: Procedure

CHECK DTC OUTPUT (HYBRID CONTROL)

Check for DTCs.

Result

Result	Proceed to
P0AA4-232 only is output, or DTCs except the ones in the tables below are also output.	A
Any of the following DTCs including pending DTCs in the table 1 below are also output.	B
Any of the following DTCs in the table 2 below are also output.	C

TABLE 1

DTC No.	Relevant Diagnosis
P0A1A-151, 155, 156, 200, 658, 659, 791, 792, 793	Generator Control Module
P0A1B-163, 164, 168, 193, 511, 512, 661, 786, 794, 795, 796	Drive Motor "A" Control Module
P0A1D-148	Hybrid Powertrain Control Module
P0A3F-243	Drive Motor "A" Position Sensor Circuit
P0A40-500	Drive Motor "A" Position Sensor Circuit Range/Performance
P0A41-245	Drive Motor "A" Position Sensor Circuit Low
P0A4B-253	Generator Position Sensor Circuit
P0A4C-513	Generator Position Sensor Circuit Range/Performance
P0A4D-255	Generator Position Sensor Circuit Low
P0A78-266, 267, 586	Drive Motor "A" Inverter Performance
P0A94-442	DC / DC Converter Performance
P0ADB-227	Hybrid Battery Positive Contactor Control Circuit Low
P0ADC-226	Hybrid Battery Positive Contactor Control Circuit High
P0ADF-229	Hybrid Battery Negative Contactor Control Circuit Low
P0AE0-228	Hybrid Battery Negative Contactor Control Circuit High
P0AE6-225	Hybrid Battery Precharge Contactor Control Circuit Low
P0AE7-224	Hybrid Battery Precharge Contactor Control Circuit High
P0AFC-129	Hybrid Battery Pack Sensor Module
P0C76-523	Hybrid Battery System Discharge Time Too Long
P2511-149	ECM/PCM Power Relay Sensor Circuit Intermittent
P3004-132	High Voltage Power Resource
P324E-788	MG-ECU Power Relay Intermittent Circuit
U0110 (all INF codes)*1	Lost Communication with Drive Motor Control Module "A"

TABLE 2

DTC No.	Relevant Diagnosis
P0AFC-123	Hybrid Battery Pack Sensor Module
P0B3D-123	Hybrid Battery Voltage Sensor "A" Circuit Low
P0B42-123	Hybrid Battery Voltage Sensor "B" Circuit Low
P0B47-123	Hybrid Battery Voltage Sensor "C" Circuit Low
P0B4C-123	Hybrid Battery Voltage Sensor "D" Circuit Low
P0B51-123	Hybrid Battery Voltage Sensor "E" Circuit Low
P0B56-123	Hybrid Battery Voltage Sensor "F" Circuit Low
P0B5B-123	Hybrid Battery Voltage Sensor "G" Circuit Low
P0B60-123	Hybrid Battery Voltage Sensor "H" Circuit Low
P0B65-123	Hybrid Battery Voltage Sensor "I" Circuit Low
P0B6A-123	Hybrid Battery Voltage Sensor "J" Circuit Low
P0B6F-123	Hybrid Battery Voltage Sensor "K" Circuit Low
P0B74-123	Hybrid Battery Voltage Sensor "L" Circuit Low
P0B79-123	Hybrid Battery Voltage Sensor "M" Circuit Low
P0B7E-123	Hybrid Battery Voltage Sensor "N" Circuit Low
P0B83-123	Hybrid Battery Voltage Sensor "O" Circuit Low
P0B88-123	Hybrid Battery Voltage Sensor "P" Circuit Low
P0B8D-123	Hybrid Battery Voltage Sensor "Q" Circuit Low
P0B92-123	Hybrid Battery Voltage Sensor "R" Circuit Low
P308A-123	Hybrid Battery Voltage Sensor All Circuits Low

HINT:

*1: If any INF codes are output for this DTC, refer to the corresponding diagnostic procedure.
P0AA4-232 may be stored due to a malfunction which causes the DTCs in the preceding tables to be stored. In this case, first troubleshoot the output DTCs in the preceding tables. Then, perform a reproduction test to check that no DTCs are output.

Result:

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Result:

GO TO DTC CHART (HYBRID BATTERY SYSTEM)

Result:

See step 2

CHECK FREEZE FRAME DATA (HYBRID CONTROL)

Read the freeze frame data of DTC P0AA4-232.

Result

Result	Proceed to
Batt Pack Current Val is 3 A or more.	A
Batt Pack Current Val is less than 3 A.	B

Result:

REPLACE INVERTER WITH CONVERTER ASSEMBLY

Result:

See step 3

CHECK HV BATTERY JUNCTION BLOCK ASSEMBLY

WARNING:

Be sure to wear insulated gloves.

HINT:

If a system main relay is stuck closed, inspect the hybrid battery junction block assembly without removing it from the vehicle, in order to keep the relay closed.
If the result of reading the freeze frame data is A, the hybrid battery junction block assembly must be replaced. Measuring resistance can determine that this is either a present or past malfunction.

Check that the service plug grip is not installed.
NOTE:
After removing the service plug grip, do not turn the power switch on (READY), unless otherwise instructed because this may cause a malfunction.
Remove the No. 1 hybrid battery shield sub-assembly (Refer to PROCEDURE - Step 10 ).

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
b3-1 (CEI) - i1-1 (-)	Power switch off	10 kΩ or higher

Result:

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Result:

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY