DTC C1938SM2445541
DTC C1938

id060200809100

DTC
C1938
Signal error from BCM
DETECTION CONDITION
• Error detected in signal from BCM via CAN communication
POSSIBLE CAUSE
• BCM malfunction
• EHPAS CM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT FOR BCM MALFUNCTION
• Using the M-MDS, perform the DTC inspection for the BCM. (See DTC INSPECTION [BCM].)
• Are any DTCs detected?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [BCM].)
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. (See ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS) ON-BOARD DIAGNOSIS.)
• Is the same DTC present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the EHPAS CM.
(See ELECTRIC POWER STEERING OIL PUMP REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
3
VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any other DTCs output? (See ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS) ON-BOARD DIAGNOSIS.)
Yes
Go to the applicable DTC inspection.
(See ELECTRO HYDRAULIC POWER ASSIST STEERING (EHPAS) ON-BOARD DIAGNOSIS.)
No
DTC troubleshooting completed.