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DTC U3003:16/U3003:17 [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)]

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2016 – MX-5 – Restraints

DTC U3003:16/U3003:17 [SAS CONTROL MODULE (TWO-STEP DEPLOYMENT CONTROL SYSTEM)]

System malfunction location

  • U3003:16: SAS control module power supply voltage decreases (8 V or less)

  • U3003:17: SAS control module power supply voltage increases (16 V or more)

Detection condition

WARNING:

  • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.

  • SAS control module power supply voltage is other than 8–16 V

Fail-safe function

Not applicable

Possible cause

  • Battery malfunction

  • SRS1 7.5 A fuse malfunction

  • Open circuit or short to body ground in wiring harness between power supply and SAS control module

  • Open circuit in the wiring harness between the SAS control module and body ground

  • SAS control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

BATTERY INSPECTION

Yes

Go to the next step.

No

Replace or charge the battery.

(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) (See BATTERY RECHARGING.)

Then go to Step 5.

2

FUSE INSPECTION

Yes

Go to the next step.

No

Replace the SRS1 7.5 A fuse.

Then go to Step 5.

3

INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND IG1 RELAY

WARNING:

NOTE:

  • Measure the voltage while shaking the wiring harness between the SAS control module and IG1 relay.

  • Is the voltage 8–16 V?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and IG1 relay terminal.

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit or short to ground.

  • Replace the malfunctioning part.

    If there is no common connector:

  • Replace the wiring harness which has an open circuit or short to ground.

Go to Step 5.

4

INSPECT SAS CONTROL MODULE CIRCUIT FOR OPEN CIRCUIT

  • SAS control module connectors are disconnected.

  • Switch the ignition off.

  • Disconnect the negative battery cable and wait 1 min or more.

    (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

  • Inspect the wiring harness between SAS control module connector terminal 2X, 2AB (wiring harness-side) and body ground.

NOTE:

  • Inspect for continuity while shaking the wiring harness between the SAS control module and body ground.

  • Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between SAS control module terminal and body ground.

    If there is a common connector:

  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.

  • Replace the malfunctioning part.

    If there is no common connector:

  • Replace the wiring harness which has an open circuit.

Go to the next step.

5

PERFORM SAS CONTROL MODULE DTC INSPECTION

Yes

Repeat the inspection from Step 1.

No

DTC troubleshooting completed.

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