For 1990-2009 cars

### Circuit Description

The battery current sensor PWM input signal is monitored by the instrument panel module (IPM).

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC B1516 Battery Current Sensor Performance

This vehicle has DTCs which include DTC symptoms. For more information, refer to DTC Symptom Description .

DTC Symptom | DTC Symptom Descriptor
--- | ---
08 | Signal Invalid

### Conditions for Running the DTC

• | The ignition is in the ON position.

• | The engine is running.

### Conditions for Setting the DTC

#### B1516 08

This DTC will be set as current when the duty cycle of the PWM input signal is less than 4 percent or more than 96 percent for more than 33 seconds.

### Action Taken When the DTC Sets

The SERVICE VEHICLE SOON warning message will be set in the drivers information center (DIC).

### Conditions for Clearing the MIL/DTC

The DTC clears as a current status when the battery sensed current returns to normal range for more than 5 seconds.

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Install a scan tool.
2. Start the engine.
3. With a scan tool observe Battery Current Sensor parameter in the instrument panel module (IPM) data list using the scan tool.

Does the scan tool indicate that the parameter is within the specified range?

<4 percent to >96 percent

Go to Step 3

Go to Charging System Test

3 | Inspect for poor connections at the harness connector of the battery current sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs Did you find and correct the condition? | -- | Go to Step 5 | Go to Step 4
4 | Replace the battery current sensor. Did you complete the replacement? | -- | Go to Step 5 | --
5 |

1. Clear the DTCs with the scan tool.
2. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text.

Does the DTC reset?

--

Go to Step 2

System OK