Retrieving Codes
NOTE:
For EDS component locations, refer to the THEORY/OPERATION - 2.5L DIESEL
in this section.
- Turn ignition off. Perform pretest conditions. See PRETEST CONDITIONS. Connect Pulse Counter (124 589 19 21 00) to vehicle battery and diagnostic connector located in right rear corner of engine compartment. See Fig 1 .
- U-BATT LED on pulse counter display will illuminate if equipment is properly connected. If U-BATT LED illuminates, go to step 5). If U-BATT LED does not illuminate, check pulse counter fuse. Replace as necessary. If pulse counter fuse is okay, go to next step.
- Using a DVOM, measure voltage between diagnostic connector terminal No. 1 and battery positive terminal. Voltage should be 11-14 volts. If voltage is not 11-14 volts, repair wiring as necessary or replace vehicle battery.
- Using a DVOM, measure voltage between diagnostic connector terminals No. 1 and 4. Voltage should be 6-12 volts. If voltage is not 6-12 volts, repair wiring as necessary or replace vehicle battery.
- Start engine and idle. Press START button on pulse counter for 2-4 seconds maximum. Pressing push button longer than 2-4 seconds will erase code in memory. Read pulse output on pulse counter. If pulse counter displays 1, no faults are stored. If pulse counter displays a number greater than 1, faults are stored.
- Press START button again for 2-4 seconds. If more fault codes are stored, pulse counter will display next code. Continue pressing START button for 2-4 seconds at a time until pulse counter displays first fault again. Record all fault codes. See FAULT CODE DEFINITION .
- If no fault codes are displayed on pulse counter and driveability or customer complaints are present, perform functional test on ELR, EGR, and P-2 control. See FUNCTIONAL TEST CHARTS .