Powertrain Control Module (PCM)

U113E-LOST COMMUNICATION WITH INTELLIGENT BATTERY SENSOR

For a complete wiring diagram, refer to the Wiring Information.





Theory of Operation

The Intelligent Battery Sensor (IBS) is an electrical shunt with a microprocessor and is located on the negative battery post. The IBS measures current flow, voltage, and temperature. The microprocessor uses this data to calculate state of charge, battery internal resistance, charge received, charge delivered, and time in service. These values are then sent on the LIN bus to the Body Control Module (BCM). The BCM communicates this information to the Powertrain Control Module (PCM) over the CAN bus.

- When Monitored:
With the ignition on for at least five seconds.

Battery voltage between 10.0 and 16.0 volts.

- Set Condition:
The Body Control Module (BCM) does not receive any information from the Intelligent Battery Sensor (IBS) for more than two seconds. One trip fault. If the vehicle is equipped with the stop/start feature, the system will be disabled when this DTC is active.





Diagnostic Test

1. ACTIVE DTC

NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

1. Ignition on, engine not running.
2. With the scan tool, select View DTCs.

NOTE: It may be necessary to drive the vehicle to meet the conditions to set this DTC, try to repeat the conditions in which the fault originally set by reviewing the Freeze Frame data.

Is the DTC Active or Pending at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

2. INTELLIGENT BATTERY SENSOR CIRCUIT DTCS SET IN THE BODY CONTROL MODULE

Are any Intelligent Battery Sensor Circuit DTCs set in the Body Control module?

Yes

- Diagnose the appropriate Intelligent Battery Sensor Circuit DTC in the Body Control module. Testing and Inspection.

No

- Replace and program the Powertrain Control Module (PCM). Powertrain Control Module - Removal.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.