DTC B1014 LH Side Air Bag Loop Short to Voltage. Opel Sintra 1999

For 1990-2009 cars
SIR Components
SIR Schematics
Handling ESD Sensitive Parts Notice
SIR Caution

### Circuit Description

When you first turn the ignition switch to the RUN position, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. Upon passing these tests IGNITION, 23 VLR and the deployment loop voltages are measured to make sure they are within their respective normal voltage ranges. The SDM monitors the voltages at Driver Side Low terminal 10 and Passenger Side Low terminal 14 to detect shorts to B+ in the side air bag deployment loop circuits.

### Conditions for Setting the DTC

• | The voltage at Passenger Side Low terminal 14 is less than 3.5 volts.

• | The voltage at Driver Side Low terminal 10 is more than 4.5 volts for 500 milliseconds.

The CONTINUOUS MONITORING test checks for this DTC. This test occurs when IGNITION is within the normal operating voltage range.

• | POWER-ON When the malfunction is detected in this test, the RESISTANCE MEASUREMENT test will not be performed.

• | CONTINUOUS MONITORING

### Action Taken When the DTC Sets

• | The SDM sets a DTC B1014.

• | The SDM turns ON the AIR BAG warning lamp.

### Conditions for Clearing the DTC

• | Current DTC

| The voltage at Driver Side Low terminal 10 is less than 3.5 volts for 500 milliseconds.

• | History DTC

- | You issue a scan tool CLEAR CODES command.

- | Once 250 malfunction free ignition cycles have occurred.

### Diagnostic Aids

A short to B+ in the inflatable restraint driver seat module circuit can cause an intermittent condition. Inspect CKT 2137 and CKT 2138 carefully for cutting or chafing. Wiring pigtail damage requires replacement of the inflatable restraint driver seat module. The diagnostic table directs the technician to note the entry value of LH SIDE AIR BAG SENSELO. Comparing the value of LH SIDE AIR BAG SENSELO can be helpful in determining if an intermittent condition exists.

When measurements are requested in this table, use J 39200 Digital Multimeter with the correct terminal adapter from J 35616 Connector Test Adapter Kit. When a check for proper connection is requested, refer to Intermittents and Poor Connections . When a wire, connector or terminal repair is requested, use J-38125 Terminal Repair Kit and refer to Wiring Repair .

### Test Description

The numbers below refer to the step numbers on the diagnostic table:

1. This step isolates the malfunction to one side of the inflatable restraint front side impact module (LH) yellow 2-way connector.

2. This step checks to see if there is a short to B+ in CKT 2138.

3. This step determines if there is a short to B+ in CKT 2137 or if there is a malfunctioning SDM.

#### DTC B1014 Driver Side Air Bag Deployment Loop Short to Voltage

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the SIR Diagnostic System Check performed? | -- | Go to Step 2 | Go to SIR Diagnostic System Check

2

1. Turn the ignition switch to the OFF position.
2. Install the scan tool.
3. Turn the ignition switch to the RUN position.
4. Use the scan tool to request the SIR data list display.
5. Read and record on the repair order the driver side air bag low voltage LH SIDE AIR BAG SENSELO.

Has the LH SIDE AIR BAG SENSELO been read and recorded on the repair order?

--

Go to Step 3

--

3

1. Turn the ignition switch to the OFF position.
2. Disconnect the inflatable restraint front side impact module (LH) and driver seat belt pretensioner yellow 2-way connectors.
3. Connect the J 38715-A SIR Driver/Passenger Load Tool STEERING COLUMN and PASSENGER INFLATOR yellow 2-way connectors to the wiring harness connectors.
4. Turn the ignition switch to the RUN position.
5. Use the scan tool to request the SIR data list display.
6. Read the driver side air bag low voltage LH SIDE AIR BAG SENSELO.

Is LH SIDE AIR BAG SENSELO more than the specified value?

4.5 V

Go to Step 5

Go to Step 4

4

1. Turn the ignition switch to the OFF position.
2. Replace the inflatable restraint front side impact module (LH). Refer to Driver and Passenger Seat Side Inflatable Restraint Module Replacement .

Is the repair complete?

--

Go to Step 9

--

5

1. Turn the ignition switch to the OFF position.
2. Disconnect the inflatable restraint sensing and diagnostic module (SDM). Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
3. Disconnect the J 38715-A .
4. Insert the J 42113 SIR Shorting Bar Tool into the SDM harness connector terminal above terminal 10 and terminal 11.
5. Turn the ignition switch to the RUN position.
6. Use the J 39200 Digital Multimeter (DMM) to measure the voltage between terminal A of the inflatable restraint front side impact module (LH) yellow 2-way wiring harness connector and a known good ground.

Is the measured voltage less than the specified value?

1 V

Go to Step 7

Go to Step 6

6

1. Locate a short to B+ in CKT 2138.
2. Repair the short to B+ in CKT 2138.

Is the repair complete?

--

Go to Step 9

--

7 | Use the J 39200 Digital Multimeter (DMM) to measure the voltage between terminal B of the inflatable restraint front side impact module (LH) yellow 2-way wiring harness connector and a known good ground. Is the measured voltage less than the specified value? | 1 V | Go to Sensing and Diagnostic Module Integrity Check | Go to Step 8

8

1. Locate a short to B+ in CKT 2137.
2. Repair the short to B+ in CKT 2137.

Is the repair complete?

--

Go to Step 9

--

9 | Reconnect all the SIR system components, making sure all the components are properly mounted. Have all the SIR components been reconnected and properly mounted? | -- | Go to Step 10 | --
10 | Use the scan tool to clear all current and history SIR DTCs. Have all current and history SIR DTCs been cleared? | -- | Go to SIR Diagnostic System Check | --