Diagnostic Manual, Body and Accessories,
Volume 1
Diagnosis - Recalling Actual values with HHT
Preparation for Test
1. Fuses ok,
2. Battery voltage 11 - 14 V.
3. Ignition: ON
4. Connect the Hand-Held Tester (HHT) to X11/4, according to diagram, see
section 0.
CAUTION!
Model 210
Erasing the Combination Control Module (N10-1) DTC memory, will also erase
the DTC memory for the Convenience Feature (CF) and Mirror, steering column
adjustment, heated mirrors (MSC).
Model 170
Erasing the Combination Control Module (N10-3) DTC memory, will also erase
the DTC memory for the Convenience Feature (CF) and Retractable Hard Top
(RHT).
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![](../../../volumes/ba1/2_1/13_1.gif) |
Actual value
![](../../../logos/mb/mbhht.gif) |
Possible cause |
Test step/Remedy
1) |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/uidg.gif) |
Circuit 15R |
23 3.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/twodg.gif) |
Circuit 15 |
23 2.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/thrdg.gif) |
Circuit 49 |
23 26.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/foudg.gif) |
Circuit 49a |
23 27.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/fivdg.gif) |
Rear window defroster switch |
23 22.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/sixdg.gif) |
Rear window heating |
23 22.0 |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/sevdg.gif) |
Low voltage |
- |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/eigdg.gif) |
Over voltage |
- |
![](../../../logos/mb/zerdg.gif) ![](../../../logos/mb/nindg.gif) |
Interior lamp |
23 18.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/zerdg.gif) |
Entrance/exit lamp |
23 17.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/uidg.gif) |
Intermittent windshield wiper |
23 9.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/twodg.gif) |
Windshield wiper stage 1 |
23 9.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/thrdg.gif) |
Windshield wiper stage 2 |
23 9.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/foudg.gif) |
Circuit 86, windshield wiper wash |
23 10.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/fivdg.gif) |
Circuit 31b, windshield wiper |
23 15.0 |
![](../../../logos/mb/uidg.gif) ![](../../../logos/mb/sixdg.gif) |
Windshield wiper locked up |
Visual inspection of wiper motor
(M6/1). |
1) Observe Preparation
for Test, see 22. |
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