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Home >> Mazda >> 2019 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Power Liftgate Control Module >> DTC U3006-13: Power Supply Circuit Malfunction [Power Liftgate (Plug) Control Module] >> Diagnostic Procedure
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Diagnostic Procedure

DTC U3006:13 (POWER LIFTGATE CONTROL MODULE) DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY PCM DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G 2.5T)] .)
No Go to the next step.
2 INSPECT BATTERY Yes Go to the next step.
No Recharge or replace the battery, then go to Step 6.
(See BATTERY RECHARGING .)
(See BATTERY REMOVAL/INSTALLATION .)
3 INSPECT GENERATOR Yes Go to the next step.
No Replace the generator, then go to Step 6.
(See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T] .)
4 INSPECT POWER LIFTGATE (PLUG) CONTROL MODULE CONNECTOR CONDITION
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the power liftgate (PLUG) control module connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
Yes Go to the next step.
No Repair or replace the connector, then go to Step 6.
5 VERIFY POWER LIFTGATE (PLUG) CONTROL MODULE POWER SUPPLY VOLTAGE
  • Always reconnect all disconnected connectors.
  • Connect the negative battery terminal.

    (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)

  • Measure the voltage at the power liftgate (PLUG) control module terminal 2I (wiring harness-side).
  • Is the voltage B+?
Yes Go to the next step.
No Inspect the PLUG 20 A fuse and TAIL 20 A fuse.
  • Any fuse is blown:
    • Refer to the wiring diagram and verify whether or not there is a common connector between MAIN 200 A fuse and power liftgate (PLUG) control module terminal 2I.

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 a short to ground.
    • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to ground.
    • Replace the fuse.
    • Any fuse is damaged:
      • Replace the fuse.
  • All fuses are normal:
    • Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and power liftgate (PLUG) control module terminal 2I.

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.
    • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has an open circuit.

Go to the next step.
6 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
7 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [POWER LIFTGATE (PLUG) CONTROL MODULE] .)
No DTC troubleshooting completed.