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Diagnosis Procedure
noteTurning the ignition switch ON with FRP sensor harness connector disconnected causes ECM to detect DTC P0192 or P0193. Be sure to erase the DTC when the diagnosis procedure.
1.CHECK DTC PRIORITY
If DTC P119D is displayed with DTC P0088 or P0090, first perform the trouble diagnosis for DTC P0088 or P0090.
Is other DTC detected?
Perform diagnosis of applicable.
.
 
2.CHECK FUEL RAIL PRESSURE (FRP) SENSOR POWER SUPPLY-1
  1. Turn ignition switch OFF.
  2. Disconnect FRP sensor harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between FRP sensor harness connector terminals.
    FRP sensorVoltage
    (Approx.)
    Connector+−
    Terminal
    F79315 V
Is inspection result normal?
.
.
 
3.CHECK FRP SENSOR POWER SUPPLY-2
Check the voltage between FRP sensor harness connector and ground.
+−Voltage
(Approx.)
FRP sensor
ConnectorTerminal
F793Ground5 V
Is inspection result normal?
.
.
 
4.CHECK FRP SENSOR POWER SUPPLY CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between FRP sensor harness connector and ECM harness connector.
    FRP sensorECMContinuity
    ConnectorTerminalConnectorTerminal
    F793F5161Existed
Is inspection result normal?
Perform trouble diagnosis for power supply circuit.
Repair or replace malfunctioning part.
 
5.CHECK FRP SENSOR GROUND CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector
  3. Check the continuity between FRP sensor harness connector and ECM harness connector.
    FRP sensorECMContinuity
    ConnectorTerminalConnectorTerminal
    F791F5141Existed
  4. Also check harness for short to power.
Is inspection result normal?
.
Repair or replace malfunctioning part.
 
6.CHECK ECM GROUND CIRCUIT
  1. Check the continuity between ECM harness connector and the ground.
    ECMGroundContinuity
    ConnectorTerminal
    F514GroundExisted
    E16156
    157
    160
  2. Also check harness for short to power.
Is inspection result normal?
INSPECTION END
Repair or replace malfunctioning part.
 
7.CHECK FRP SENSOR SIGNAL CIRCUIT
  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between FRP sensor harness connector and ECM harness connector.
    FRP sensorECMContinuity
    ConnectorTerminalConnectorTerminal
    F792F5158Existed
  4. Also check harness for short to ground and short to power.
Is inspection result normal?
.
Repair or replace malfunctioning part.
 
8.CHECK FRP SENSOR
Refer to Component Inspection.
Is inspection result normal?
INSPECTION END
Replace FRP sensor. Refer to Exploded View.