Meter / Gauge System

METER: METER / GAUGE SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. COMBINATION METER ASSEMBLY





(a) Disconnect the E13 combination meter assembly connector.
(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction in the wire harness.
(c) Disconnect the E14 combination meter assembly connector.
(d) Measure the voltage of the wire harness side connector.













- *1: for Manual Transmission
- *2: for Automatic Transmission
- *3: w/ Rear Differential Lock
- *4: for Automatic Transmission with 4WD
- *5: w/ Cruise Control
- *6: w/ Active Traction Control
- *7: for 2WD
HINT: If the result is not as specified, the combination meter assembly may be malfunctioning.




(1) Waveform 1: Using an oscilloscope









(2) Waveform 2: Using an oscilloscope





HINT: As the vehicle speed increases, the cycle of the signal waveform narrows.





(e) Waveform 3: Using an oscilloscope





HINT: A changes in accordance with the engine coolant temperature.





2. ACCESSORY METER ASSEMBLY





(a) Disconnect the F1 accessory meter assembly connector.
(b) Measure the voltage and resistance of the wire harness side connector.





HINT: If the result is not as specified, the accessory meter assembly may be malfunctioning.




(1) Waveform 1: Using an oscilloscope









(2) Waveform 2: Using an oscilloscope






3. CHECK MAIN BODY ECU





(a) Disconnect the E7, E8 and 1A main body ECU connectors.
(b) Measure the voltage of the wire harness side connectors.





HINT: If the result is not as specified, there may be a malfunction in the wire harness.

4. COMBINATION METER INTERNAL CIRCUIT













Connectors









- *1: for Manual Transmission
- *2: for Automatic Transmission
- *3: w/ Daytime Running Light System
- *4: w/o Daytime Running Light System
- *5: w/ Rear Differential Lock
- *6: for Automatic Transmission with 4WD
- *7: w/ Cruise Control
- *8: w/ Active Traction Control
- *9: for 2WD