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Home >> Acura >> 2013 >> ZDX >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control >> General Troubleshooting Information >> Run the Sensor Input Display Mode
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Run the Sensor Input Display Mode

  1. Make sure the ignition switch is in LOCK (0), or the vehicle ignition is in the OFF mode.
  2. Press and hold both the passenger's AUTO and RECIRCULATION buttons, then start the engine.
  3. After the engine starts, release both buttons. The HVAC display flashes the sensor number, then the value for that sensor. Record the value displayed.
  4. To advance to the next sensor, press the REAR WINDOW DEFOGGER/MIRROR DEFOGGER button.
    NOTE:
    • The sensor values are displayed in degrees Celsius (°C) or an alphanumeric code. Use the charts to convert degrees Fahrenheit (°F), or convert the alphanumeric code to a numerical value.
    • If the sensor value displays "Er", this indicates there is an open or short in the circuit or sensor. Check for DTCs using the HDS, or use the climate control unit self-diagnostic function.
    • If necessary, compare the sensor input display to a known-good vehicle under the same test conditions.
    • If the sensor displayed value is out of the normal range, refer to the sensor test or substitute a known-good sensor, and recheck.
    Sensor Item Displayed Value
    1 In-car temperature °C
    2 Outside air temperature °C
    3 Solar radiation sensor value: dark = 00, flashlight = 04, cloudy = 10, sunny = 65 kcal/m2 .h
    4 Engine coolant temperature °C
    5 Evaporator outlet air temperature °C
    6 Driver's air mix opening (low value indicates cooler air distribution, higher value indicates warmer air distribution) % of opening
    Passenger's air mix opening (low value indicates cooler air distribution, higher value indicates warmer air distribution) (passenger's side of display) % of opening
    7 Vent temperature air out (TAO) °C
    8 Vehicle speed (vehicle must be driven to display speed) km/h
    9 A/C pressure 10 kPa
    A Humidity sensor value % rh
    b Fog margin °C
    C Solar radiation azimuth (with navigation) 10°
    d Solar radiation angle of elevation (with navigation) 10°
    CELSIUS TO FAHRENHEIT CONVERSION TABLE

    °C °F
    0 32
    1 34
    2 36
    3 37
    4 39
    5 41
    6 43
    7 45
    8 46
    9 48
    10 50
    11 52
    12 54
    13 55
    14 57
    15 59
    16 61
    17 63
    18 64
    19 66
    20 68
    21 70
    22 72
    23 73
    24 75
    25 77
    26 79
    27 81
    28 82
    29 84
    30 86
    31 88
    32 90
    33 91
    34 93
    35 95
    36 97
    37 99
    38 100
    39 102
    40 104
    41 106
    42 108
    43 109
    44 111
    45 113
    46 115
    47 117
    48 118
    49 120
    50 122
    51 124
    52 126
    53 127
    54 129
    55 131
    56 133
    57 135
    58 136
    59 138
    60 140
    61 142
    62 144
    63 145
    64 147
    65 149
    66 151
    67 153
    68 154
    69 156
    70 158
    71 160
    72 162
    73 163
    74 165
    75 167
    76 169
    77 170
    78 172
    79 174
    80 176
    81 178
    82 180
    83 181
    84 183
    85 185
    86 187
    87 189
    88 190
    89 192
    90 194
    91 196
    92 198
    93 199
    94 201
    95 203
    96 205
    97 207
    98 208
    99 210
    ALPHANUMERIC CONVERSION TABLE

    Display Reading (Alphanumeric) °C °F %
    A1 thru A9 -1 thru -9 30 thru 16 - 1 thru -9
    B0 thru B9 -10 thru -19 14 thru -2 -10 thru -19
    CO thru C9 -20 thru -29 -4 thru -20 -20 thru -29
    DO thru D9 -30 thru -39 -22 thru -38 -30 thru -39
    E0 thru E9 -40 thru -49 -40 thru -56 -40 thru -49
    F0 thru F9 -50 thru -59 -59 thru -74 + 100 thru +109
  5. To cancel the sensor input display mode, press the driver's AUTO button or turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
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