Preparation for Test 1. Review section 0 entirely before starting Electrical Test Program. 2. Additionally review: 21, 22, 23(connector connections). 3. Review the following ETM diagrams: PE00.19-P-1100B PE42.00-P-1100B PE00.19-P-1100D PE42.00-P-1100D PE00.19-P-1100A PE42.00-P-1100A 4. Review control module CAN data, starting with 22/6 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. Electrical Wiring Diagrams: (location of grounds and connectors). Electrical Troubleshooting Manual, Models 129, 140, 170, 202, 208, 210 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.

Test Equipment; See MBUSA Standard Service Equipment Program

Description	Brand, model, etc.
Digital multimeter	Fluke models 23, 77 III, 83, 85, 87

CAN data outputs, ABS control module (N47-7)

CAN signal	Information
ABS status	Brake lining wear indicator lamp (A1e6) Parking brake operated indicator lamp (A1e7) ABS defect indicator lamp (A1e17) System fault or diagnosis Stop lamp switch S9/1): brake not operated brake operated no signal Cruise control operation OFF ABS operational ABS operation OFF
Front left wheel vehicle speed signal (VSS)	Wheel speed
Front right wheel vehicle speed signal (VSS)	Wheel speed
Rear left wheel vehicle speed signal (VSS)	Wheel speed
Rear right wheel vehicle speed signal (VSS)	Wheel speed
Front left wheel speed signal for CC	Wheel speed
Front right wheel speed signal for CC	Wheel speed
ABS status	Cruise control operation OFF ABS operational ABS operation OFF System fault or diagnosis
ETS/ASR/ESP status	Brake lining wear indicator lamp (A1e6) Parking brake operated indicator lamp (A1e7) ABS defect indicator lamp (A1e17) ETS/ASR/ESP defect indicator lamp (A1e22/35/42) ASR/ESP OFF switch operated - warning light on permanently Slip or system operates - flashing warning light Stop lamp switch (S9/1): brake not operated brake operated no signal ASR request "Start off in 2nd gear" ASR request "Hold gear" Quicker ASR/EBR torque intervention Increase in specified engine torque (EBR active)
ETS/ASR/ESP status	Reduction in specified engine torque (ASR active) Cruise control operation OFF ASR operational ABS/ASR operation OFF System fault or diagnosis
Front left wheel vehicle speed signal (VSS)	Wheel speed
Front right wheel vehicle speed signal (VSS)	Wheel speed
Rear left wheel vehicle speed signal (VSS)	Wheel speed
Rear right wheel vehicle speed signal (VSS)	Wheel speed
Front left wheel speed signal for CC	Wheel speed
Front right wheel speed signal for CC	Wheel speed

CAN data inputs, ETS/ASR/ESP control module

CAN signal	Information	From control module
Engine status	Engine speed (rpm)	Engine control module
Engine status	Adjusted engine torque for traction control	Engine control module
Engine status	Atmospheric pressure	Engine control module
Engine status	Acknowledgment of torque requirement	Engine control module
Engine status	Pedal value	Engine control module
Engine status	Indicated engine torque	Engine control module
Engine status	Engine friction torque	Engine control module
Engine status	Maximum engine torque	Engine control module
Engine status	Clutch depressed (NON-USA)	Engine control module
Vehicle code	Model Body style Engine Transmission	Engine control module
Transmission status	Actual gear Target gear	ETC
Transmission status	Rear-wheel drive 4 wheel drive	ETC
Transmission status	Shift introduction Transmission in limp-home mode	ETC
Transmission code	Large transmission Small transmission	ETC
Transmission status	Torque converter lockup clutch engaged Torque converter lockup clutch disengaged Torque converter lockup clutch slip	ETC
Automatic clutch status (NON-USA)	1st gear	Automatic clutch control module
Automatic clutch status (NON-USA)	Shift introduction Clutch engaged Clutch disengaged Clutch slip	Automatic clutch control module
Automatic clutch status (NON-USA)	Emergency limp-home mode	Automatic clutch control module