Mercedes-Benz Sprinter 2003, Manual

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NAG1 TRANSMISSION VERIFICATION TEST - VER 1 APPLICABILITY
1. Reconnect any disconnected components.
2. Connect the DRBIII
t
to the Data Link Connector.
3. With the DRBIII
t
, erase ABS DTCs.
4. With the DRBIII
t
, erase ECM DTCs.
5. With the DRBIII
t
, erase Transmission DTCs.
6. With the DRBIII
t
, display Transmission Temperature. Start and run the engine until the
Transmission Temperature is HOT, above 43° C (110° F).
7. Check the Transmission fluid and adjust if necessary. Refer to the Service Information for the
proper Fluid Fill procedure.
8. NOTE: If internal repairs were performed and the shift quality is still poor, it may
be necessary to check the internal repair. Also check for any TSBs and/or Controller
Flash updates that may apply.
9. ROAD TEST PROCEDURE
10. Road test the vehicle. Make fifteen to twenty 1-2, 2-3, 3-4 and 4-5 upshifts.
11. Perform these shifts from a standing start to 72 km/h (45 MPH) with a constant throttle
opening of 20 to 25 degrees.
12. With speeds below 40 km/h (25 MPH), make five to eight wide open throttle kickdowns to
1st gear. Allow at least 5 seconds each in 2nd and 3rd gear between each kickdown.
13. With the DRBIII
t
, read Transmission DTCs.
Were there any Diagnostic Trouble Codes set?
All
Yes
→
Repair is not complete, refer to appropriate symptom.
No
→
Repair is complete.
ROAD TEST VERIFICATION - VER-2 APPLICABILITY
1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If this verification procedure is being performed after a non-DTC test, perform steps 3 and 4.
3. Check to see if the initial symptom still exists. If there are no trouble codes and the symptom
no longer exists, the repair was successful and testing is now complete.
4. If the initial or another symptom exists, the repair is not complete. Check all pertinent Technical
Service Bulletins (TSBs) and return to the Symptom List if necessary.
5. For previously read DTCs that have not been dealt with, return to the Symptom List and follow
the diagnostic path for that DTC; otherwise, continue.
6. If the Engine Control Module (ECM) has not been changed, perform steps 7 and 8, otherwise,
continue with step 9.
7. With the DRB III
t
, erase all diagnostic trouble codes (DTCs), then disconnect the DRB III
t
.
8. Turn the ignition off for at least 10 seconds.
9. If equipped with a Transfer Case Position Switch, perform step 10, otherwise, continue with step
11.
10. With the ignition switch on, place the Transfer Case Shift Lever in each gear position, stopping
for 15 seconds in each position.
11. Ensure no DTCs remain by performing steps 12 through 15.
12. Road test the vehicle. For some of the road test, go at least 64 km/h (40 MPH). If this test is
for an A/C Relay Control Circuit, drive the vehicle for at least 5 minutes with the A/C on.
13. At some point, stop the vehicle and turn the engine off for at least 10 seconds, then restart the
engine and continue.
14. Upon completion of the road test, turn the engine off and check for DTCs with the DRB III
t
.
15. If the repaired DTC has set again, the repair is not complete. Check for any pertinent Technical
Service Bulletins (TSBs) and return to the Symptom List. If there are no DTCs, the repair was
successful and is now complete.
Are any DTCs or symptoms remaining?
All
Yes
→
Repair is not complete, refer to appropriate symptom.
No
→
Repair is complete.
240
VERIFICATION TESTS
Verification Tests —
Continued