P0B6B

DTC P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E, P0B93, P0B98, or P0B9D

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0B3D
- Hybrid Battery 1 Circuit High voltage

DTC P0B43
- Hybrid Battery 2 Circuit High voltage

DTC P0B48
- Hybrid Battery 3 Circuit High voltage

DTC P0B4D
- Hybrid Battery 4 Circuit High voltage

DTC P0B52
- Hybrid Battery 5 Circuit High voltage

DTC P0B57
- Hybrid Battery 6 Circuit High voltage

DTC P0B5C
- Hybrid Battery 7 Circuit High voltage

DTC P0B61
- Hybrid Battery 8 Circuit High voltage

DTC P0B66
- Hybrid Battery 9 Circuit High voltage

DTC P0B6B
- Hybrid Battery 10 Circuit High voltage

DTC P0B70
- Hybrid Battery 11 Circuit High voltage

DTC P0B75
- Hybrid Battery 12 Circuit High voltage

DTC P0B7A
- Hybrid Battery 13 Circuit High voltage

DTC P0B7F
- Hybrid Battery 14 Circuit High voltage

DTC P0B84
- Hybrid Battery 15 Circuit High voltage

DTC P0B89
- Hybrid Battery 16 Circuit High voltage

DTC P0B8E
- Hybrid Battery 17 Circuit High voltage

DTC P0B93
- Hybrid Battery 18 Circuit High voltage

DTC P0B98
- Hybrid Battery 19 Circuit High voltage

DTC P0B9D
- Hybrid Battery 20 Circuit High voltage

Diagnostic Fault Information






Typical Scan Tool Data






Circuit/System Description

The hybrid battery assembly consists of 40 individual batteries. Each battery is rated at 7.2 volts. The batteries are connected together in series circuit. The battery energy control module (BECM) monitors the hybrid battery voltage on every two batteries for a total of 20 locations, across the battery assembly. If a hybrid battery voltage level increases above a calculated value, this DTC will set.

Conditions for Running the DTC

* The vehicle power mode is RUN.
* Accessory voltage is 9-18 volts.

Conditions for Setting the DTC

* Ignition ON.
* When any hybrid battery voltage measurement value is over 23 volts for 3 out of 4 seconds, this DTC will set.

Action Taken When the DTC Sets

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E, P0B93, P0B98, and P0B9D are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0B3E, P0B43, P0B48, P0B4D, P0B52, P0B57, P0B5C, P0B61, P0B66, P0B6B, P0B70, P0B75, P0B7A, P0B7F, P0B84, P0B89, P0B8E, P0B93, P0B98, and P0B9D are Type B DTCs.

Special Tools

* EL-48571 High Voltage Battery Pin Out Box
* EL-48900 HEV Safety Kit

Circuit/System Verification

1. Ignition ON, with a scan tool, monitors all 1 through 20 hybrid battery voltage parameters. All hybrid battery voltage parameters should be within 11-19 volts.
2. Operate the vehicle within the Conditions for Running the DTCs. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Danger: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

* Identify how to disable high voltage

* Identify how to test for the presence of high voltage

* Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

* Failure to follow the procedures exactly as written may result in serious injury or death.

Ignition OFF, disable the high voltage at the drive motor generator battery. Refer to High Voltage Disabling.

1. Remove the drive motor generator battery cover.
2. Disconnect the X4 harness connector at the BECM.
3. Connect the EL-48571 high voltage battery pin out box to the X4 harness connector.
4. Install the high voltage manual disconnect lever.
5. Test for 11-19 volts across all 20 battery voltage reference circuits.

^ If not within the specified range, replace the drive motor battery assembly.

6. If all circuits test normal, replaced the BECM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair. Verification Tests

* Drive Motor Generator Battery Replacement
* Drive Motor Generator Battery Control Module and Bracket Replacement