Diesel Data: Automotive Repair

Meter / Gauge System








METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. COMBINATION METER





(a) Measure the voltage according to the value(s) in the table below.









- *1: for TMC Made
- *2: except TMC Made
- *3: except for U.S.A.
- *4: w/ Front Fog Light
- *5: for U.S.A.





(b) Waveform (Reference): Using oscilloscope:





- Vehicle speed signal that has been received and transmitted via the direct line is used for another system, and is not used for combination meter operation.
- When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.
HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

2. COMBINATION METER INNER CIRCUIT
(a) Combination Meter Inner Circuit

















- *1: except for U.S.A.
- *2: w/ Front Fog Light