Self-Diagnostic System
Ensure all components are connected. Turn ignition switch to RUN position (engine off). Connect scan tool. Check if scan tool communicates with Vehicle Control Module (VCM). Check for PASSLOCK(R) DTCs. See DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS table. If more than one code exists, diagnose and repair in order listed in table. See DIAGNOSTIC TESTS.
DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS
| DTC (1) | Definition | ||
|---|---|---|---|
| U1016 | Loss of Class 2 Communication With VCM | ||
| U1255 | Class 2 Communication Malfunction | ||
| C0559 | EEPROM Checksum Error | ||
| B2947 | Sensor Power Circuit Low | ||
| B3033 | System Indicates Tamper | ||
| B2960 | Sensor Data Incorrect But Valid | ||
| B2957 | Sensor Data Circuit Low | ||
| B2958 | Sensor Data Circuit High | ||
| B2948 | Sensor Power Circuit High | ||
| B3031 | Controller In Learn Mode | ||
| B0688 | Indicator Circuit High | ||
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