Diagnostic Manual, Chassis and Drivetrain,
Electrical Test Program - Preparation for Test
|1. Ignition: OFF
2. Disconnect ASR/SPS or ETS/SPS control module (N47-1 or N47-2).
3. Connect socket box with test cable as per connection
diagram (Figure 1).
The measured voltages will be slightly lower in diesel models during preglow.
Electrical Wiring Diagrams:
Electrical Troubleshooting Manual, Model 129,
Electrical Troubleshooting Manual, Model 140.
When exchanging an ETS/SPS control module, the replacement module must have the code data entered via the HHT. Follow instructions on HHT display.
Conventional tools, test Equipment
||Brand, model, etc.
|Digital multimeter 1)
||Fluke models 23, 83, 85, 87
|1) Available through the MBUSA Standard Equipment Program.