For 1990-2009 cars

### Circuit Description

When the ignition switch is turned to ON, the sensing and diagnostic module (SDM) will perform a turn-on test to diagnose critical malfunctions within the SDM itself.

Upon passing this test, ignition and deployment loop voltages are measured to ensure that they are within their normal voltage ranges. The SDM monitors the voltages at the driver low and the passenger low to detect shorts to ground or voltage in the deploy loops.

### DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC 014 Passenger Pretensioner Deployment Loop Resistance Too Low

### Conditions for Running the DTC

Ignition voltage is within the normal operating voltage range.

### Conditions for Setting the DTC

• | The resistance of the passenger belt pretensioner deploy loop is lower than 1.5 ohms.

• | The shorting bar is damaged and then the SDM must be replaced.

### Action Taken When the DTC Sets

The SDM commands the AIR BAG indicator ON.

### Conditions for Clearing the DTC

The condition responsible for setting the DTC no longer exists and the scan tool Clear DTCs function is used.

Step | Action | Values | Yes | No
--- | --- | --- | --- | ---
Caution: Refer to Sensing and Diagnostic Module Voltage after Ignition is Turned Off Caution in the Preface section. Caution: Refer to Sensing and Diagnostic Module Handling Caution in the Preface section. Schematic Reference: SIR Schematics Connector End View Reference: SIR Connector End Views
1 | Did you perform a Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Disconnect the negative battery cable.
2. Measure the resistance between the high and low circuits of the passenger seat belt pretensioner module.

Does the resistance measure less than the specified value?

∞

Go to Step 5

Go to Step 3

3 |

1. Replace the sensing and diagnostic module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
2. Connect the negative battery cable.
3. Use the scan tool in order to clear the DTCs.
4. Perform the Diagnostic System Check - Vehicle .

Is DTC 014 still shown as a current fault?

--

Go to Step 4

Go to Step 6

4 | Replace the passenger seat belt pretensioner module. Refer to Front Seat Belt Replacement . Did you complete the repair? | -- | Go to Step 6 | --
5 | Replace the SIR wiring harness. Did you complete the repair? | -- | Go to Step 6 | --
6 |

1. Reconnect all SIR components.
2. Verify that all components, connectors and connector position assurances (CPAs) are properly mounted.
3. Use the scan tool in order to clear the DTCs.
4. 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