2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1128

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 1128

DTC P0AC6

- Hybrid Battery 2 Temperature Sensor Performance

DTC P0AC7

- Hybrid Battery 2 Temperature Sensor Circuit Low Voltage

DTC P0AC8

- Hybrid Battery 2 Temperature Sensor Circuit High Voltage

DTC P0ACB

- Hybrid Battery 3 Temperature Sensor Performance

DTC P0ACC

- Hybrid Battery 3 Temperature Sensor Circuit Low Voltage

DTC P0ACD

- Hybrid Battery 3 Temperature Sensor Circuit High Voltage

DTC P0AE9

- Hybrid Battery 4 Temperature Sensor Performance

DTC P0AEA

- Hybrid Battery 4 Temperature Sensor Circuit Low Voltage

DTC P0AEB

- Hybrid Battery 4 Temperature Sensor Circuit High Voltage

Typical Scan Tool Data

Circuit/System Description

The drive motor generator battery has four hybrid battery temperature sensors. The hybrid battery temperature sensors are located on the top of the

hybrid batteries. The temperature sensor is a variable resistor that measures the temperature of the hybrid batteries. The control module supplies 5 V

to the signal circuit and a ground for the low reference circuit. The hybrid battery temperature sensor resistance changes with battery temperature.

The lower the temperature, the higher the resistance of the sensor. The higher the temperature, the lower the resistance of the sensor. The drive

motor generator battery control module (BECM) uses the battery temperature sensors to determine the hybrid battery temperature to control the

battery cooling fan operation.

Conditions for Running the DTC

* The ignition is ON.

* The 12 V battery voltage is 9-18 V.

Conditions for Setting the DTC

P0A9C, P0AC6, P0ACB, and P0AE9

The hybrid battery temperature sensor is in normal operating range, but is 15掳C (59掳F) different from the other 3 sensors.

P0A9D, P0AC7, P0ACC, and P0AEA

The hybrid battery temperature is greater than 95掳C (203掳F) and one other temperature sensor is less than 70掳C (158掳F).

P0A9E, P0AC8, P0ACD, and P0AEB

The hybrid battery temperature is less than -40掳C (-40掳F).

Action Taken When the DTC Sets

* DTCs P0A9C, P0A9D, P0A9E, P0AC6, P0AC7, P0AC8, P0ACB, P0ACC, P0ACD, P0AE9, P0AEB, and P0AEA are type B DTCs.