Traction Systems and Speed-Sensitive Power Steering

Traction Systems (ABS, ASR, ETS) and Speed-Sensitive Power Steering (SPS)

Model 129, 140, 202 as of 09/95, (ABS, ASR, ETS, SPS)
Model 170, Model 208
Model 210 with engine 112, (except 4MATIC) 113, 119
Model 210 with engine 104, 606 as of 06/96
Model 210.08, 210.28
(above models without ESP)

Electrical Test Program - Preperation For Test

1. Review section 0 entirely before starting Electrical Test Program.
2 .Additionally review: [21], [22], [23] (connector connections).
3. Review the wiring diagrams.
4. Review control module CAN data, below.
5. Ignition: OFF
6. Disconnect traction control module (N47).
7. Connect socket box with test cable as per connection diagram (Figures 1-3).
8. Perform test steps.

When exchanging an ETS/SPS control module, the replacement module must have the code data entered via the HHT. Follow instructions as given by HHT display. In order to code the control module, select "?" on HHT key pad.

The electrical test includes ETS, ASR and SPS. In order to avoid listing all traction control modules (ABS [N47-7], ETS [N47-2], ASR [N47-1]) and all hydraulic units (ASR/ETS/ESP [A7/3]) used in the traction control systems, the general designation N47 (traction control module) will be used for all traction control modules, and A7/3 (ASR/ETS/ESP hydraulic unit) for all traction control hydraulic units, regardless of what is actually installed in vehicle.

Special Tools:

Test Equipment:

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