Diesel Data: Automotive Repair

Dynamic Laser Cruise Control System








CRUISE CONTROL: DYNAMIC LASER CRUISE CONTROL SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK DISTANCE CONTROL ECU













(a) Reference: waveform 1

HINT:
- Terminal: LRDD - GND
- Gauge set: 2 V/DIV, 10 msec./DIV
- Condition: Ignition switch on (IG)





(b) Reference: waveform 2

HINT:
- Terminal: LRRD - GND
- Gauge set: 2 V/DIV, 5 msec./DIV
- Condition: Ignition switch on (IG)

2. CHECK ECM









If the value is not within the standard range, some defects on the vehicle are suspected.
3. CHECK LASER SENSOR













(a) Reference: waveform 1

HINT:
- Terminal: LRDD - SGND
- Gauge set: 1 V/DIV, 2 msec./DIV
- Condition: Ignition switch on (IG)





(b) Reference: waveform 2

HINT:
- Terminal: LRRD - SGND
- Gauge set: 1 V/DIV, 2 msec./DIV
- Condition: Ignition switch on (IG)