Diagnosis Procedure
1.
CHECK DTC PRIORITY
If DTC “C2521-87” is displayed with Network-DTC, first diagnose the Network-DTC.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC Index
DTC Index
.
.
2.
CHECK ECM SELF DIAGNOSTIC RESULT
Perform “Self Diagnostic Result” of “ENGINE” using M.U.T.-III SE.
Are any DTCs detected?
Refer to
DTC Index
.
Replace front camera unit. Refer to
Removal and Installation
.
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Perform diagnosis of applicable. Refer to DTC IndexDTC Index 
. 
. Refer to DTC Index. Replace front camera unit. Refer to Removal and Installation.