NAVIGATION SYSTEM (for HDD) TERMINALS OF ECU


  1. CHECK NAVIGATION RECEIVER ASSEMBLY

    A003B81E01

    1. Disconnect the D22 navigation receiver connector.

    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
      D22-3 (ACC) - D22-7 (GND) GR - BR Accessory (On) Ignition switch off Below 1 V
      D22-3 (ACC) - D22-7 (GND) GR - BR Accessory (On) Ignition switch ACC 11 to 14 V
      D22-4 (B) - D22-7 (GND) SB - BR Battery Always 11 to 14 V
      D22-7 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the D22 navigation receiver connector.

    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
      D22-1 (FR+) - D22-7 (GND) LG - BR Sound signal (Front Right) Audio system playing A waveform synchronized with the sound is output
      D22-2 (FL+) - D22-7 (GND) P - BR Sound signal (Front Left) Audio system playing A waveform synchronized with the sound is output
      D22-5 (FR-) - D22-7 (GND) L - BR Sound signal (Front Right) Audio system playing A waveform synchronized with the sound is output
      D22-6 (FL-) - D22-7 (GND) V - BR Sound signal (Front Left) Audio system playing A waveform synchronized with the sound is output
      D22-9 (AMP) - D22-7 (GND) BR - BR Power source of stereo component amplifier Audio system playing 11 to 14 V
      D22-10 (ILL+) - D22-7 (GND) G - BR Illumination signal Light control switch off Below 1 V
      Light control switch on 11 to 14 V
      D23-1 (RR+) - D22-7 (GND) R - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with the sound is output
      D23-2 (RL+) - D22-7 (GND) B - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with the sound is output
      D23-3 (RR-) - D22-7 (GND) W - BR Sound signal (Rear Right) Audio system playing A waveform synchronized with the sound is output
      D23-6 (RL-) - D22-7 (GND) Y - BR Sound signal (Rear Left) Audio system playing A waveform synchronized with the sound is output
      D24-1 (V+) - D24-11 (V-) R - W Display signal Ignition switch ON, shift lever in R Pulse generation (Refer to waveform 1)
      Ignition switch ON, shift lever in R, screen blacked out by covering camera lens Pulse generation (Refer to waveform 2)
      D24-2 (CA+) - D22-7 (GND) B - BR Television camera power supply Ignition switch ON, shift lever in R 5.8 to 6.2 V
      D24-3 (SNS2) - D22-7 (GND) L- BR Microphone connection detection signal Always Below 1 Ω
      D24-4 (MIN+) - D22-7 (GND) W - BR Microphone voice signal

      See "Microphone & Voice Recognition Check" Click here

      		-
      D24-5 (MACC) - D22-7 (GND) B - BR Microphone amplifier power supply Ignition switch off Below 1 V
      Ignition switch ACC 4.75 to 5.25 V
      D24-6 (SWG) - Body ground V - Body ground Steering pad switch ground Always Below 1 V
      D24-7 (SW1) - D24-6 (SWG) P - V Steering pad switch signal

      No switch is pushed

      → SEEK+ switch pushed

      → SEEK- switch pushed

      → VOL+ switch pushed

      → VOL- switch pushed

      2.97 to 3.56 V

      → 0.27 to 0.35 V

      → 0.86 to 1.03 V

      → 1.51 to 1.79 V

      → 2.22 to 2.66 V
      D24-8 (SW2) - D24-6 (SWG) SB - V Steering pad switch signal

      No switch is pushed

      → MODE switch pushed

      → On Hook switch pushed

      → Off Hook switch pushed

      → Voice switch pushed

      2.97 to 3.56 V

      → 0.27 to 0.35 V

      → 0.86 to 1.03 V

      → 1.51 to 1.79 V

      → 2.22 to 2.66 V
      D24-11 (V-) - D24-12 (CGND) W - Shielded Ground Always Below 1 V
      D24-12 (CGND) - Body ground Shielded - Body ground Ground Always Below 1 V
      D24-13 (MIN-) - D22-7 (GND) R - BR Microphone voice signal

      See "Microphone&Voice Recognition Check" Click here

      		-
      D24-14 (SGND) - D22-7 (GND) Shielded - BR Signal ground Always Below 1 V
      D24-15 (ARI) - D22-7 (GND) R - BR Sound signal (Right) External device playing (when stereo jack is used) A waveform synchronized with the sound is input
      D24-16 (ASGN) - D22-7 (GND) W - BR Ground Always Below 1 V
      D24-17 (ALI) - D22-7 (GND) B - BR Sound signal (Left) External device playing (when stereo jack is used) A waveform synchronized with the sound is input
      D24-18 (AGND) - Body ground Shielded - Body ground Shielded ground Always Below 1 V
      D24-19 (AUXI) - D22-7 (GND) L - BR External device connection detection signal External device connected 1.1 to 1.5 V
      External device is not connected 2.0 to 2.4 V
      D24-20 (LRHD)* - Body ground W-B - Body ground Ground Always Below 1 V
      D25-3 (SPD) - D22-7 (GND) Y - BR Speed signal from combination meter

      See "Vehicle Signal Check Mode" Click here

      		-
      D25-5 (REV) - D22-7 (GND) R - BR Reverse signal

      See "Vehicle Signal Check Mode" Click here

      		-

      *: for RHD


      • If the result is not as specified, the navigation receiver assembly may have a malfunction.

    5. A003DRYE01

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) D24-1 (V+) - D24-11 (V-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R
    6. A003DL6E01

      Using an oscilloscope, check waveform 2.

      Measurement Condition
      Item Content
      Terminal No. (Symbol) D24-1 (V+) - D24-11 (V-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition Ignition switch ON, shift lever in R, screen blacked out by covering camera lens