Mazda MX-5 NA silhouetteMX-5 NA

INSTRUMENT CLUSTER

T-36prose procedure
Continued from T-35

Oil Pressure Gauge Inspection (continued)

  1. 4
    Set the SST to the resistance values shown in the figure.
    Oil pressure gauge dial face (lb/in scale) showing needle test positions: 52 ohm, 41 ohm, 16 ohm with markings 30, 60, 90.
    9MU0TX-087
  2. 5
    Verify that the needle indicates the correct values.

Printed Circuit Inspection

  1. 1
    Remove the instrument cluster. (Refer to page T-33.)
  2. 2
    Check the printed circuit for damage or oxidization.
    Printed circuit board on rear of instrument cluster showing copper traces and component pads.
    05U0TX-067
  3. 3
    If necessary, replace the printed circuit.

Speed Sensor Inspection

  1. 1
    Remove the instrument cluster.
  2. 2
    Check continuity between terminals 2d and 2f while rotating the speedometer cable shaft.
    Speed sensor inspection setup showing continuity check between terminals 2d and 2f on instrument cluster while rotating speedometer cable shaft.
    05U0TX-297
  3. 3
    If the correct number of pulsations fail to occur during each shaft rotation, replace the speed sensor. (Refer to page T-33.)
Pulsation
4/shaft rotation

Water Thermosensor Inspection

  1. 1
    Remove the sensor.
  2. 2
    Place the sensor and a thermometer in water.
    Water thermosensor inspection: sensor and thermometer placed in heated water beaker, connected to ohmmeter for resistance measurement.
    05U0TX-069
  3. 3
    Heat the water gradually, and measure the resistance of the sensor with an ohmmeter.
  4. 4
    If the resistance is not as specified, replace the sensor.
Resistanceat 50°C (122°F)
190 — 260 ohm

FUEL GAUGE SENDER UNIT (IN FUEL TANK) Inspection

Fuel Gauge Sender Unit Inspection

  1. 1
    Remove the fuel tank gauge sender unit. (Refer to Section F.)
  2. 2
    Disconnect the fuel gauge sender unit connector.
  3. 3
    Check resistance between terminals a and b while slowly moving the unit arm from point F to point E.
    Fuel gauge sender unit travel diagram showing arm positions from F to E with measurements at points: 3±0.6 ohm, 15.8±0.6 ohm, 32.5±0.7 ohm, 64.2±1.5 ohm, 110±2.5 ohm and travel distances 45mm (1.77 in), 44mm (1.73 in), 50mm (1.97 in), 62mm (2.44 in).
    05U0TX-070
  4. 4
    If not correct, replace the fuel gauge sender unit.

Fuel Gauge Sender Resistance vs Travel

F
Resistance (ohm)3 ± 0.6
Travel—
Resistance (ohm)15.8 ± 0.6
Travel45 mm (1.77 in)
Resistance (ohm)32.5 ± 0.7
Travel44 mm (1.73 in)
Resistance (ohm)64.2 ± 1.5
Travel50 mm (1.97 in)
E
Resistance (ohm)110 ± 2.5
Travel62 mm (2.44 in)
Support our work!

See also

T-33INSTRUMENT CLUSTERSection F

Search Manual

Search pages, specs, and procedures