DTC U2023

id060200809000

DTC
U2023
Signal error from PCM
DETECTION CONDITION
•  Error detected in signal from PCM via CAN communication
POSSIBLE CAUSE
•  PCM malfunction
•  EHPAS CM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT FOR PCM MALFUNCTION
•  Using the M-MDS, perform the DTC inspection for the PCM.
•  Are any DTCs detected?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [ZY, Z6].)
(See DTC TABLE [LF, L5].)
(See DTC TABLE [MZR 2.0 DISI i-stop].)
(See DTC TABLE [L3 Turbo].)
(See DTC TABLE [MZ-CD 1.6 (Y6) (EURO4 emission level)].)
(See DTC TABLE [MZ-CD 1.6 (Y6) (EURO5 emission level)].)
(See DTC TABLE [MZR-CD 2.2].)
DTC troubleshooting completed, then go to the next step.
No
Go to the next step.
2
VERIFY THAT SAME DTC IS NOT PRESENT
•  Clear the DTC from the memory.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the electric power steering oil pump component.
(See ELECTRIC POWER STEERING OIL PUMP COMPONENT REMOVAL/INSTALLATION.)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any other DTCs output?
Yes
Go to the applicable DTC inspection.
(See ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS) ON-BOARD DIAGNOSIS.)
No
DTC troubleshooting completed.