1. Ignition: ON 2. Read out actual values and perform activations using the HHT 3. Ignition: OFF 4. Connect socket box and test cable according to connection diagram (Figure 1) Note: Use recommended multimeter (refer to 22 /2) equipped with an analog bar graph display. 5. After completing repairs on the PTS: Erase DTC's Wait 20 seconds (the existing fault[s] will be erased after 20 seconds). Electrical wiring diagrams: Electrical Trouble Shooting Manual (ETM) Model 140 and 210 Note: When replacing the Ultrasonic PTS control module (N62), the control module must be version coded using the HHT. Follow instruction as indicated in the HHT display.

Conventional tools, test equipment

Description	Brand, model, etc.
Multimeter 1)	Fluke models 2) 23, 83, 88

1) Available through the MBUSA Standard Service Equipment Program. 2) Only multimeters with analog display can be used