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6E-118 Engine Control System (4HK1) P0118 (Flash Code 23) Circuit Description Condition for Running the DTC • DTCs P1630 and P1634 are not set. Condition for Setting the DTC • The ECM detects that the ECT sensor signal voltage is more than 4.8 volts for 10 seconds. Action Taken When the DTC Sets • The ECM illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails. • The ECM uses an ECT substitution of -20 °C (-4°F) for engine starting control. • The ECM uses an ECT substitution of 110 °C (230 °F) for engine control. • The ECM inhibits EGR valve control. Condition for Clearing the MIL / DTC • The ECM turns OFF the MIL when the key is cycled after a current DTC clears. • A current DTC clears when the diagnostic runs and does not fail. • A history DTC clears after 20 consecutive driving cycles without a fault. Or clear with the Tech 2 or Diagnostic Aid • If an intermittent condition is suspected, refer to Intermittent Conditions in this section. • Use the Temperature vs. Resistance table to test the ECT sensor at various temperature levels to DTC P0118 (Flash Code 23) Step Action Value(s) Yes No 1 Did you perform the Diagnostic System Check – — Go to Step 2 Go to Diagnostic System Check – Engine Controls 2 1. Install the Tech 2. 2. Turn OFF the ignition for 30 seconds. 3. Turn ON the ignition, with the engine OFF. 4. Observe the Coolant Temperature Sensor Is the Coolant Temperature Sensor parameter 4.8 volts Go to Step 3 Go to Diagnostic Aids 3 1. Turn OFF the ignition. 2. Disconnect the engine coolant temperature 3. Connect a DMM between the signal circuit of 4. Turn ON the ignition, with the engine OFF. Is the DMM voltage more than the specified value? 5.5 volts Go to Step 4 Go to Step 5 |