Nissan Micra K11 silhouetteK11

DTC P0115 ENGINE COOLANT TEMPERATURE SENSOR (ECTS) (CIRCUIT); Diagnostic Procedure; Steps 1-3

EF & EC-7088prose procedure
Continued from EF & EC-7087

Diagnostic Procedure

CG10, CGA3

Step 1 — CHECK POWER SUPPLY

  1. 1
    Turn ignition switch "OFF".
  2. 2
    Disconnect engine coolant temperature sensor harness connector. (See NEF151A)
  3. 3
    Turn ignition switch "ON".
  4. 4
    Check voltage between terminal 2 and ground with CONSULT-II or tester. (See SEF997W)
  5. 5
    Voltage: Approximately 5 V.
  6. 6
    OK or NG: - OK → GO TO 3. - NG → GO TO 2.

Step 2 — DETECT MALFUNCTIONING PART

  1. 1
    Check the harness for open or short between ECM and engine coolant temperature sensor.
  2. 2
    → Repair harness or connectors.

Step 3 — CHECK GROUND CIRCUIT

  1. 1
    Turn ignition switch "OFF".
  2. 2
    Check harness continuity between engine coolant temperature sensor harness connector terminal 1 and ECM harness connector terminal 71 or body ground. Refer to wiring diagram. Continuity should exist.
  3. 3
    Also check harness for short to ground and short to power.
  4. 4
    OK or NG: - OK → GO TO 4. - NG → Repair open circuit or short to ground or short to power in harness or connectors.
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