METER / GAUGE SYSTEM TERMINALS OF ECU


  1. CHECK NO. 1 METER ECU

    A01GK8SE04

    1. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L10-1 (B) - Body ground G - Body ground Turn indicator light LH signal Engine switch on (IG), turn indicator light LH off Below 1 V
      Engine switch on (IG), turn indicator light LH blinks Alternating between below 1 and 11 to 14 V
      L10-4 (A/B) - Body ground B - Body ground ODO/TRIP switch signal Engine switch on (IG), ODO/TRIP switch on Below 1 V
      Engine switch on (IG), ODO/TRIP switch off 4.4 to 5.5 V
      L10-5 (RSET) - Body ground BR - Body ground RESET switch signal Engine switch on (IG), RESET switch on Below 1 V
      Engine switch on (IG), RESET switch off 4.4 to 5.5 V
      L10-7 (RHDW) - Body ground L - Body ground Light control rheostat DOWN switch signal Engine switch on (IG), Light control rheostat DOWN switch on Below 1 V
      Engine switch on (IG), Light control rheostat DOWN switch off 4.4 to 5.5 V
      L10-8 (RHUP) - Body ground R - Body ground Light control rheostat UP switch signal Engine switch on (IG), Light control rheostat UP switch on Below 1 V
      Engine switch on (IG), Light control rheostat UP switch off 4.4 to 5.5 V
      L10-9 (SI) - Body ground L - Body ground Speed signal (Input) Engine switch on (IG) and turn the wheel slowly Pulse generation (See waveform)
      L10-10 (+S) - Body ground V - Body ground Speed signal (Output) Engine switch on (IG) and turn the wheel slowly Pulse generation (See waveform)
      L10-11 (EFI) - Body ground R - Body ground MIL MIL on Below 1 to 4.2 V
      MIL off 11 to 14 V
      L10-12 (B) - Body ground Y - Body ground Turn indicator light RH signal Engine switch on (IG), turn indicator light RH off Below 1 V
      Engine switch on (IG), turn indicator light RH blinks Alternating between below 1 and 11 to 14 V
      L10-13 (B) - Body ground P - Body ground +B power supply Always 11 to 14 V
      L10-14 (IG2) - Body ground L - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      L10-16 (ILL-) - Body ground LG - Body ground Illumination signal Engine switch on (IG) Pulse generation
      L10-17 (E2) - Body ground W-B - Body ground Ground (Power ground) Always Below 1 Ω
      L10-18 (ES) - Body ground BR - Body ground Ground Always Below 1 Ω
      L10-24 (EPB*) - Body ground L - Body ground Parking brake switch signal Engine switch on (IG), parking brake switch on Below 1.5 V
      Engine switch on (IG), parking brake switch off 11 to 14 V

      • EPB*: Electric Parking Brake System

    2. A01GJWIE05

      Using an oscilloscope, check the waveform.

      Waveform (Reference)
      Item Condition
      Terminal No. (Symbols)

      L10-10 (+S) - Body ground

      L10-9 (SI) - Body ground
      Tool setting 5 V/DIV., 20 msec./DIV.
      Vehicle condition

      Engine switch on (IG) and turn the wheel slowly

      Driving at approximately 20 km/h (12 mph)

      Tech Tips

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

  2. FRONT MULTIPLEX NETWORK LIGHT ECU (FRONT CONTROLLER)

    A01GN13E03

    1. Disconnect the A50 and A52 front controller connectors.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A52-5 (ALTB) - Body ground L - Body ground +B power supply Always 11 to 14 V
      A52-1 (BATB) - Body ground P - Body ground +B power supply Always 11 to 14 V
      A50-1 (FMB3) - Body ground LG - Body ground +B power supply Always 11 to 14 V
      A50-5 (FMIG) - Body ground Y - Body ground IG power supply Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      A50-2 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the A50 and A52 front controller connectors.

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A52-10 (MOL) - A52-20 (MOLE) L - W Engine oil level sensor signal Engine oil level sensor on Below 1 V
      Engine oil level sensor off 11 to 14 V
      A52-11 (MOPS) - Body ground R - Body ground Engine oil pressure switch signal Engine switch on (IG), engine oil pressure warning display on Below 1 V
      Engine switch on (IG), engine oil pressure warning display off 11 to 14 V
      A52-12 (ALTL) - Body ground P - Body ground Charge warning light signal Engine switch on (IG), charge warning light on Below 1 V
      Engine switch on (IG), charge warning light off 11 to 14 V

  3. CHECK LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)

    A01GMXPE02

    1. Disconnect the LA, LD and LG luggage room junction block connectors.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      LA-29 (SG) - Body ground W-B - Body ground Ground Always Below 1 Ω
      LA-43 (PGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      LD-4 (MPXB) - LA-29 (SG) R - W-B ECU power supply Always 11 to 14 V
      LG-1 (FUEL) - LA-29 (SG)

      W - W-B*1

      R - W-B*2

      		 +B power supply Always 11 to 14 V

      • If the result is not as specified, there may be a malfunction on the wire harness side.


      • *1: w/ Pre-crash Safety System

      • *2: w/o Pre-crash Safety System

    3. Reconnect the LA, LD and LG luggage room junction block connectors.

    4. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S61-7 (FR) - Body ground SB - Body ground Fuel level signal Engine switch on (IG), fuel level F Below 1 V
      Engine switch on (IG), fuel level E 4.5 to 9 V
      S61-18 (FE) - Body ground LG - Body ground Ground (Fuel ground) Always Below 1 Ω

  4. CHECK STEERING PAD SWITCH

    A01GHZ0E03
    Text in Illustration
    *A w/ Transmission Shift Switch
    *B w/o Transmission Shift Switch

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

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      z15-12 - Body ground*1 W - Body ground +B power supply Always 11 to 14 V
      z7-12 - Body ground*2 R - Body ground +B power supply Always 11 to 14 V

      • *1: w/ Transmission Shift Switch

      • *2: w/o Transmission Shift Switch