Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Dodge and Ram >> 1991 >> Caravan C/V, Van Cargo Extended, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.3L >> Self-Diagnostic System >> Retrieving Fault Codes >> DRB-II Method

DRB-II Method

  1. Turn ignition off. Attach DRB-II Tester (C-4805) to diagnostic connector.
    DIAGNOSTIC CONNECTOR LOCATIONS (1)

    Application Location
    Caravan, Town & Country, & Voyager In Engine Compartment, Near SBEC
    (1) See Fig 1 -3.
    Fig 1: Identifying Diagnostic Connector Terminals
    G91D13311Courtesy of CHRYSLER MOTORS.
    Fig 2: Locating Diagnostic Connector (Caravan, Town & Country)
    G91E13312Courtesy of CHRYSLER MOTORS.
    Fig 3: Locating Diagnostic Connector (Voyager)
    G91E13312Courtesy of CHRYSLER MOTORS.
  2. Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped). Turn engine off. Without starting engine again, turn ignition on. DO NOT  touch keypad on DRB-II during power-up sequence, or an error will result. The copyright date and diagnostic program will be displayed briefly.
  3. If DRB-II screen is blank, or if an error message appears, proceed to DRB-II PROBLEMS & ERROR MESSAGES  in this article. The following are possible error messages that may appear: BAD FRAMING, BAD OP CODE, CARTRIDGE ERROR, COMMAND REJECTED, HIGH BATTERY, KEYPAD TEST FAILURE, LOW BATTERY, NO RESPONSE or RAM TEST FAILURE.
  4. After a few seconds, display will change to read as follows: DRB-II, 1) VEHICLES TESTED, or 2) HOW TO USE. Press ENTER button immediately. Press the down arrow twice. Display will now read as follows: DRB-II, 2) HOW TO USE, 3) CONFIGURE, and 4) SELECT SYSTEM.
  5. Select No. 4 (SELECT SYSTEM) to enter the diagnostic system. Display will read as follows: SELECT SYSTEM, 1) ENGINE, and 2) TRANSMISSION. Select No. 1 (ENGINE) to enter the engine system part of the DRB-II program. Display will change to read as follows: 1991 XX, XXXX EMISSIONS, AUTOMATIC TRANS, SBEC XX,#XXXX-A.
    NOTE: Display may vary slightly depending on engine package being diagnosed.
  6. After a few seconds, display will change to read as follows: AIR COND, 1) WITH A/C, and 2) WITHOUT A/C. Press ENTER button to change display immediately. Select No. 1 or No. 2 as appropriate for vehicle being tested.
  7. Display will now read as follows: ENGINE SYSTEM, 1) FUEL/IGNITION, and 2) CHARGING. Select No. 1 (FUEL/IGNITION) to bring up menu of test categories for the fuel/ignition system. Display will change to read as follows: FUEL/IGN MENU, 1) SYSTEM TEST, and 2) READ FAULTS.
  8. Press the down arrow 3 times to view rest of menu. Display will read as follows: FUEL/IGN MENU, 3) STATE DISPLAY, 4) ACTUATOR TEST, and 5) ADJUSTMENTS. To read fault codes, select No. 2 (READ FAULTS).
  9. If no fault code exists, display will read as follows: NO FAULTS DETECTED. If fault codes exist, display will show number of faults detected, such as 1 of 3 faults, and fault message. This is the fault counter. Below the fault message, the start counter (key counter) will list number of starts since fault code was set.
  10. The start counter (key counter) helps to determine if fault is intermittent. As an example, if DRB-II displays 0 STARTS SINCE ERS, this indicates zero engine starts since fault occurred, and fault code is a hard failure. If start counter (key counter) on DRB-II shows more than zero engine starts since fault last occurred, fault code is an intermittent failure.
  11. If more than one fault code exists, press the down arrow to display next fault code. All fault codes must be read before fault codes can be erased. Once fault codes are obtained, refer to appropriate NO START TEST 1A (NS-1A) or DRIVEABILITY TEST 1A (DR-1A) trouble shooting chart.
NOTE: When using trouble shooting charts for diagnosis, DO NOT  skip any steps in chart, or incorrect diagnosis may result.
scientia non olet · About Mike's Workshop Manuals