Kawasaki Z1000SX - Service manual > Water Temperature Sensor (Service Code 14)

Water Temperature Sensor Removal/Installation

NOTICE Never drop the water temperature sensor especially on a hard surface. Such a shock to the sensor can damage it.

• Drain the coolant (see Coolant Change in the Periodic Maintenance chapter).
• Remove:
  Left Lower Fairing (see Lower Fairing Removal in the Frame chapter)
  Connector [A]
  Water Temperature Sensor [B]
• Replace the gasket with a new one, and tighten the water temperature sensor.

  Torque - Water Temperature Sensor: 30 N*m (3.0 kgf*m, 22 ft*lb)

• Fill the engine with coolant and bleed the air from the cooling system (see Coolant Change in the Periodic Maintenance chapter).

Water Temperature Sensor Output Voltage Inspection

NOTE

• Be sure the battery is fully charged.

• Turn the ignition switch OFF.
• Remove the left lower fairing (see Lower Fairing Removal in the Frame chapter)
• Disconnect the water temperature sensor connector and connect the harness adapter [A] between these connectors as shown.
  Sub Harness [B]
  Water Temperature Sensor [C]

Special Tool - Measuring Adapter: 57001-1700

• Connect a digital meter [D] to the harness adapter leads.

Water Temperature Sensor Output Voltage
 Connections to Adapter:
  Digital Meter (+) → R (sensor W/R) lead
  Digital Meter (-) → BK (sensor W/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 at 20ºC (68ºF)

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 Inspection).

  If the ground and power supply are good, replace the ECU (see ECU Removal/Installation).

  If the reading is out of the standard, remove the ECU and check the wiring for continuity between main and sub harness connectors.

  • Disconnect the ECU and sensor connectors.

Wiring Inspection
 ECU Connector [A] ←→
  Sub Harness Connector [B]
   O lead (ECU terminal 29) [C]
   BR/BK lead (ECU terminal 33) [D]

Sub Harness Connector [A] ←→
 Sub Harness Connector [B]
  W/R lead [C]
  W/BL lead [D]

If the wiring is good, check the water temperature sensor resistance (see Water Temperature Sensor Resistance Inspection).

Water Temperature Sensor Resistance Inspection

• Refer to the Water Temperature Sensor Inspection in the Electrical System chapter.

  If the reading is within the standard, but the problem still exists, replace the ECU (see ECU Removal/Installation).

Water Temperature Sensor Circuit

1. ECU
2. Water Temperature Sensor
3. To Meter Unit

See also: