USING DIAGNOSTIC CHARTS
Use following illustrations to understand diagnostic charts and identify symbols used. (Scheme 137)- (Scheme 139).
Scheme 137
Scheme 138
Scheme 139
SELF-DIAGNOSTIC SYSTEM
Note. For aid in using diagnostic charts, see USING DIAGNOSTIC CHARTS .
DIAGNOSTIC TROUBLE CODE MEMORY (SECTION 11)
| CAUTION | On vehicles with ME-SFI, the Base Module (N16/1) is not equipped with DTC memory. DTC's can only be retrieved by performing SYSTEM TESTS . |
Note. Diagnostic trouble codes can be retrieved from many different modules. Codes and testing listed in this article are for codes retrieved from the base module.
Test Preparation For DTC Readout
- Connect impulse counter scan tool and adapter or HHT to data link connector (X11/4). (Scheme 140)
- Connect Yellow wire from impulse counter scan tool as follows: Socket 8 Base Module - BM (N16/1) Socket 6 ABS or ASR control module (N30 or N30/1) Socket 12 SPS control module (N49/1) Socket 11 ADS control module (N51) Socket 4 HFM-SFI control module (N3/4)
- Turn ignition ON.
- Read DTC memory for BM, ABS, ABS/ASR, SPS, ADS, HFM-SFI control modules.
Scheme 140
RETRIEVING DIAGNOSTIC TROUBLE CODES
To retrieve diagnostic trouble codes, see DIAGNOSTIC TROUBLE CODE MEMORY (SECTION 11) .
CLEARING DIAGNOSTIC TROUBLE CODES
Connect Hand-Held Tester (965 589 00 01 00) to Data Link Connector. DLC is located under left side of instrument panel. Following manufacturer's instructions, clear diagnostic trouble codes.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
Note. Observe Preparation for Test, see PREPARATION FOR TESTS (SECTION 22) .
| Generic DTC | Mercedes Benz DTC | Possible Cause | Test Step/Remedy |
|---|---|---|---|
| 1 | No fault in system | In case of complaint: do entire test 23. See ELECTRICAL SYSTEM TESTS (SECTION 23) . | |
| 5 | 005 | Maximum allowable temperature in module box exceeded Module box blower motor was phased out of production on model 140 starting M.Y. 1994 | 15.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 15.0-18.0) |
| 6 | 06 | A/C electromagnetic clutch (A9k1) jammed or poly-V-belt broken | 13.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 11.0-14.0) visually inspect compressor and poly-v-belt |
| 7 | 007 | Poly-V-belt slips | 13.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 11.0-14.0) check poly-v-belt tension |
| 10 | 010 | Base module (N16/1) voltage supply output fuse F2, open circuit | 8.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 8.0-10.0) |
| 11 | 011 | Base module (N16/1) voltage supply output fuse F3, open circuit | 9.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 8.0-10.0) |
| 12 | 012 | Base module (N16/1) voltage supply output fuse F1, open circuit | 6.0, 7.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 4.0-7.0) |
| 15 | 015 | Kickdown switch (S16/6) | 16.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 15.0-18.0) |
| 16 | 016 | A/C electromagnetic clutch (A9k1), short circuit | 13.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 11.0-14.0) |
| 17 | 017 | Module box blower motor (M2/2), short circuit Module box blower motor was phased out of production on model 140 starting M.Y. 1994 | 15.0, see ELECTRICAL SYSTEM TEST - Section 23 (Steps 15.0-18.0) |
DIAGNOSTIC TROUBLE CODE LIST
