LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (On-Board Diagnostic - Dash-Electrical Supply Unit) >> DTC U264A-13: Ignition Switch [Dash-Electrical Supply Unit (Us)] >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC U264A:13 [DASH-ELECTRICAL SUPPLY UNIT (US)] DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT IG1 RELAY No. 2 FOR MALFUNCTION
 Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See RELAY LOCATION (US) .)
2 INSPECT CLIMATE CONTROL UNIT CONNECTOR FOR MALFUNCTION
  • Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .)
  • Are the connector and terminal normal?
 Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
3 INSPECT F47 15 A FUSE
  • Remove the F47 15 A fuse.
  • Inspect the F47 15 A fuse.
  • Is the fuse normal?
 Yes Reinstall the F47 15 A fuse, then go to the next step.
No Replace the F47 15 A fuse and perform the repair completion verification.
4 INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR SHORT TO GROUND
  • Inspect the applicable circuit for a short to ground. (See CIRCUIT INSPECTION .)
  • Is the circuit normal?
 Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
5 INSPECT CLIMATE CONTROL UNIT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT
  • Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION .)
  • Is the circuit normal?
 Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
6 INSPECT CLIMATE CONTROL UNIT FOR MALFUNCTION DEPENDING ON REPEATABILITY
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, replace the malfunctioning location and perform the repair completion verification.
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER (US)] .)
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER (US)] .)
No Go to repair completion verification 2.
Repair completion verification 1 VERIFY THAT VEHICLE IS REPAIRED
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the dash-electrical supply unit. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, perform the diagnosis from Step 1.
No Go to the next step.
Repair completion verification 2 VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
scientia non olet · About LEMON Manuals