Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 1992 >> Cherokee Limited >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator & Regulator >> Testing (On-Vehicle) >> Entering On-Board Diagnostics >> Trouble Code Explanation

Trouble Code Explanation

  1. See CHARGING SYSTEM FAULT CODES  table for charging-related faults.
  2. Code 41 will set if the alternator field control fails to switch properly. SBEC-II monitors this circuit whenever ignition is on.
  3. If battery temperature sense voltage goes out of range, Code 44 will set in memory. SBEC-II monitors this circuit any time ignition is on.
  4. If battery voltage is more than one volt above desired control voltage for more than 20 seconds, a Code 46 will be set in memory. SBEC-II monitors this signal whenever the engine is running.
  5. If battery is more than one volt below desired control voltage for more than 20 seconds, Code 47 will be set. Code 47 will also set if no significant change in voltage is detected during alternator test. SBEC-II monitors this signal whenever engine speed is more than 1500 RPM.
    CHARGING SYSTEM FAULT CODES

    Code Circuit "CHECK ENGINE" Light Status
    41 (1) Alternator Field Control On
    44 (1) (2) Battery Temp. Sensor On
    46 (1) High Battery Voltage On
    47 (1) Low Battery Voltage Off
    55 End Of Diagnostic Mode Off
    (1) This code will cause limp-in mode.
    (2) Sensor inside SBEC-II. If failed, replace SBEC-II.
    NOTE: Only charging system-related codes are listed here. For engine-related codes, see appropriate TESTS W/CODES article in the ENGINE PERFORMANCE Section.
scientia non olet · About Mike's Workshop Manuals