Service Manual (KLZ1000C) — page 634 of 762

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17-32 SELF-DIAGNOSIS SYSTEM
Water Temperature Sensor (Service Code 14) (DTC P0115, P0117)
Water Temperature Sensor Output Voltage
Inspection
                           NOTE
 ○Be sure the battery is fully charged.
• Turn  the ignition switch off.
• -23)). the left side cover (see Side Cover Removal(15
  Remove

• Disconnect   the water temperature sensor connector and
  connect the measuring adapter [A] between these con-
 nectors as shown.
  Subharness [B]
  Water Temperature Sensor [C]
 Special Tool - Measuring Adapter: 57001-1700
• Connect
  leads.
          a digital meter [D] to the measuring adapter

 Water Temperature Sensor Output Voltage
  Connections to Adapter:
      Digital Meter (+) → R (sensor W/BL) lead
      Digital Meter (–) → BK (sensor BL) lead

• Measure   the output voltage with the engine stopped and
  with the connector joined.
• Turn the ignition switch on.
 Output Voltage
  Standard: About DC 2.80  2.97 V @20°C (68°F)

                           NOTE
 ○The output voltage changes according to the coolant
   temperature in the engine.

• Turn  the ignition switch off.
  If the reading is within the standard, check the ECU for
 its ground and power supply (see ECU Power Supply In-
 spection(3-39)).
 If the ground and power supply are good, replace the
 ECU.
 If the reading is out of the standard, remove the ECU and
 check the wiring for continuity between harness connec-
 tors.
○Disconnect the ECU and sensor connectors.
 Wiring Continuity Inspection
  ECU Connector [A] ←→
      Water Temperature Sensor Connector [B]
       ECU Terminal 53 [C] ←→ Sensor Terminal [D]
       ECU Terminal 16 [E] ←→ Sensor Terminal [F]
 If the wiring is good, check the water temperature sensor
 resistance (see Water Temperature Sensor Resistance
 Inspection(17-32)).
Water Temperature Sensor Resistance Inspection
• Refer to the Water Temperature Sensor Inspection (see
  Water Temperature Sensor Inspection(16-112)).
 If the reading is within the standard, but the problem still
 exists, replace the ECU.