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Daewoo Matiz (2003 year). Manual - part 214

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 37

DTC 12 – Driver Pretensioner Circuit, Short To Battery Voltage

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Step

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Action

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Value(s)

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Yes

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1. Disconnect the battery negative cable.
2. Wait 1 minute for the SDM capacitor to discharge.

The capacitor supplies reserve power to deploy
the driver seat belt pretensioner even if the
battery has been disconnected.

3. Visually inspect the supplemental inflatable

restraints (SIR) wiring harness.

Is there any visible damage to the SIR wiring
harness?

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–

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Go to Step 2

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Go to Step 3

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1. Replace the SIR wiring harness.
2. Reconnect the negative battery cable.
Is the repair complete?

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–

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Go to

Diagnostic

System Check

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1. Disconnect the electrical connector for the driver

seat belt pretensioner module.

2. Disconnect the electrical connector at the SDM.

The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the driver seat belt pre-
tensioner module.

3. Use a multimeter to check the voltage at one of

the terminals on the SDM side of the SIR wiring
harness connector for the driver seat belt
pretensioner module.

Refer to ‘‘Diagnostic Illustration 18’’ in this
section.

Is the voltage greater than the specified value?

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0 v

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Go to Step 2

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Go to Step 4

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1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool to CODE ERASE.
4.Do the diagnostic system check.
Does the code 12 still show as a current fault?

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–

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Go to Step 5

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System OK

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1. Replace the driver seat belt pretensioner module.
2. Reconnect the negative battery cable.
Is the repair complete?

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–

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Go to

Diagnostic

System Check

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–

8B – 38 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)

D1AB302B

DIAGNOSTIC TROUBLE CODE (DTC) 13

PASSENGER PRETENSIONER CIRCUIT, RESISTANCE TOO HIGH

Open Circuit

Circuit Description

When the ignition switch is turned ON, the sensing and
diagnostic module (SDM) will perform tests to diagnose
any malfunctions within itself.

After passing these tests, the SDM will check the
passenger pretensioner circuit. The SDM allows a very
small amount of current to flow through the circuit. The
SDM monitors the circuit resistance during this check.

DTC 13 Will Set When

The combined resistance of the passenger preten-
sioner module, the harness wiring, and the connector
contacts is above a specified value, as in an open cir-
cuit.

Test Description

Caution: Before testing, disconnect the negative
battery cable. Wait 1 minute for the SDM capacitor
to discharge. The capacitor supplies reserve power
to deploy the airbags, even if the battery is discon-
nected. Unintentional deployment of the airbags
can cause injury.

Caution: Never measure the resistance of an airbag
module. If the anti-deployment shorting bar on the
module-side of the connector is not working prop-
erly, the meter’s battery can deploy the airbag and
cause injury.

SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR) 8B – 39

DTC 13

–

Passenger Pretensioner Circuit, Resistance Too High

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Step

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Action

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Value(s)

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Yes

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1. Disconnect the negative battery cable.
2. Wait 1 minute for the SDM capacitor to discharge.
3. Examine the wiring and the connector at the

passenger seat belt pretensioner module.

Is the connector disconnected?

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–

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Go to Step 2

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Go to Step 3

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1. Reconnect the passenger seat belt pretensioner

module connector.

2. Reconnect the negative battery cable.
Is the repair complete?

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–

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Go to

Diagnostic

System Check

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–

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1. Disconnect the electrical connector for the

passenger seat belt pretensioner module.

2. Disconnect the electrical connector at the SDM.

The shorting bar at the disconnected SDM
connector will create a complete circuit be-
tween the wires from the passenger seat belt
pretensioner module.

3. Connect an ohmmeter to the terminals on the

SDM side of the wiring harness connector for the
passenger seat belt pretensioner module.

Refer to ‘‘Diagnostic Illustration 19’’ in this
section.

Does the ohmmeter show the specified value?

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≈

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Go to Step 4

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Go to Step 6

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1. Replace the SDM.
2. Reconnect the negative battery cable.
3. Set the scan tool for CODE ERASE.
4. Do the diagnostic system check.
Does the code 13 still show as a current fault?

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–

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Go to Step 5

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System OK

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1. Replace the passenger seat belt pretensioner

module.

2. Reconnect the negative battery cable.
Is the repair complete?

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–

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Go to

Diagnostic

System Check

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–

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1. Replace the supplemental inflatable restraints

(SIR) wiring harness.

2. Reconnect the negative battery cable.
Is the repair complete?

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–

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Go to

Diagnostic

System Check

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–

8B – 40 SUPPLEMENTAL INFLATABLE RESTRAINTS (SIR)

D1AB302B

DIAGNOSTIC TROUBLE CODE (DTC) 14

PASSENGER PRETENSIONER CIRCUIT, RESISTANCE TOO LOW

Short Circuit

Circuit Description

When the ignition switch is turned ON, the sensing and
diagnostic module (SDM) will perform tests to diagnose
any malfunctions within itself.

DTC 14 Will Set When

The combined resistance of the passenger preten-
sioner module, the harness wiring, and the connector
contacts is below a specified value, as in a short cir-
cuit between the wires to the passenger airbag mod-
ule.

Test Description

Caution: Never measure the resistance of an airbag
module. If the anti-deployment shorting bar on the
module side of the connector is not working prop-
erly, the meter’s battery could deploy the airbag and
cause injury.

Content .. 212 213 214 215 ..