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Home >> Mazda >> 2021 >> CX-9 Signature >> Repair and Diagnosis >> Accessories & Equipment >> Memory Modules >> On-Board Diagnostic - Position Memory Control Module >> DTC U3003-16: Position Memory Control Module [Position Memory Control Module] >> Diagnostic Procedure
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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 POSITION MEMORY CONTROL MODULE (FRONT SEAT) CONNECTOR
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the position memory control module (front seat) 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 INSPECT POSITION MEMORY CONTROL MODULE (FRONT SEAT) POWER SUPPLY CIRCUIT
  • Verify that the position memory control module (front seat) connector is disconnected.
  • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Switch the ignition ON (engine off or on).
  • Measure the voltage at the following terminals (wiring harness-side):
    • Position memory control module (front seat) terminal 1G
      • Position memory control module (front seat) terminal 1M
  • Is the voltage B+?
Yes Go to the next step.
No Refer to appropriate wiring diagram and verify whether or not there is a common connector between the following terminals:
  • IG1 relay-Position memory control module (front seat) terminal 1G
  • Battery positive terminal-Position memory control module (front seat) terminal 1M

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:
  • Inspect the wiring harness between the following terminals (wiring harness-side):
    • IG1 relay-Position memory control module (front seat) terminal 1G
    • Battery positive terminal-Position memory control module (front seat) terminal 1M

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 [POSITION MEMORY CONTROL MODULE] .)
No DTC troubleshooting completed.