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DTC 24 - Water Temperature Signal

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Instrument Cluster Connector Terminals (DTC 24)
G03701557Courtesy of MAZDA MOTORS CORP.
DIAGNOSTIC PROCEDURE - DTC 24

STEP INSPECTION INDICATION (Reference) ACTION
1
  • Using WDS or equivalent, verify whether any/both of the following DTCs for PCM are indicated.
    • P0117
    • P0118
 Yes - Go to applicable DTC inspection.
No - Go to next step.
2
  • Start engine and idle it.
  • Using WDS or equivalent, check coolant temperature.
  • Check instrument cluster indication when coolant temperature is 50 °C {122 °F}  .
 209 Go to Step 4.
Other than stated above. Go to next step.
3 Using oscilloscope, verify wave pattern at instrument cluster terminal 2E when coolant temperature is 50 °C {122 °F}  . Refer to Figure 1 in Fig 2 Replace instrument cluster.
Other than stated above. Replace PCM.
4 Check instrument cluster indication when coolant temperature is 70 °C {158 °F}  . 152 Go to Step 6.
Other than stated above. Go to next step
5 Using oscilloscope, verify wave pattern at instrument cluster terminal 2E when coolant temperature is 70 °C {158 °F}  . Refer to Figure 2 in Fig 2 Replace instrument cluster.
Other than stated above. Replace PCM.
6 Check instrument cluster indication when coolant temperature is 90 °C {194 °F}  . 092 Input signal to instrument cluster is okay
Other than stated above. Go to next step.
7 Using oscilloscope, verify wave pattern at instrument cluster terminal 2E when coolant temperature is 90 °C {194 °F}  . Refer to Figure 3 in Fig 2 Replace instrument cluster.
Other than stated above. Replace PCM.
Fig 2: Instrument Cluster Wave Patterns
G03701559Courtesy of MAZDA MOTORS CORP.
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