Did you perform the SIR Diagnostic System Check?

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Go to Step 2

Diagnostic System Check - SIR in SIR

1. Turn the ignition switch to the RUN position.
2. Connect a DMM between the data link connector (DLC) terminals 9 and 4.

Is the voltage less than the specified value?

4-5 volts

Go to Step 4

Go to Step 3

Is the voltage greater than the specified value?

4-5 volts

Go to Step 6

Diagnostic System Check - SIR in SIR

1. Turn the ignition switch to the OFF position.
2. Connect a DMM between terminal 9 of the DLC and ground.

Is continuity present?

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Go to Step 5

Go to Step 8

Locate and repair the short to ground in CKT 800 (TAN) between the sensing and diagnostic module (SDM) and the DLC. Refer to SIR/SRS Wiring Repairs in Wiring Systems.

Is the repair complete?

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Diagnostic System Check - SIR in SIR

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1. Disconnect the SDM connector. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR.
2. Turn the ignition switch to the RUN position.
3. Connect a DMM between terminal 9 of the DLC and ground.

Is the voltage greater than the specified value?

0 volts

Go to Step 7

Go to Step 8

Locate and repair the short to voltage in CKT 800 (TAN) between the sensing and diagnostic module (SDM) and the DLC. Refer to SIR/SRS Wiring Repairs in Wiring Systems.

Is the repair complete?

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Diagnostic System Check - SIR in SIR

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Perform the SDM integrity check. Refer to Sensing and Diagnostic Module Integrity Check in SIR.

Did the SDM pass the check?

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Diagnostic System Check - SIR in SIR

Go to Step 9

Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement in SIR.

Is the repair complete?

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Diagnostic System Check - SIR in SIR

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