DTC U063F:00 [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))]

id0102sc053600

DTC U63F:00

SENT communication: Communication error between coolant control valve position sensor and PCM

DETECTION CONDITION

•  When any of the following conditions is met:

―  SENT communication line malfunction between coolant control valve position sensor and PCM

―  The PCM detected a SENT communication type communication error from the coolant control valve position sensor.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The check engine light does illuminate.

•  FREEZE FRAME DATA/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Not applicable

POSSIBLE CAUSE

•  SENT communication line error between coolant control valve position sensor and PCM

•  Coolant control valve/coolant control valve position sensor connector or terminals malfunction

•  PCM connector or terminals malfunction

•  Open circuit in wiring harness between the following terminals:

―  Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D

―  Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I

―  Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG

•  Short to ground in wiring harness between the following terminals:

―  Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D

―  Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I

―  Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG

•  Short to power supply in wiring harness between the following terminals:

―  Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D

―  Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I

―  Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG

•  Coolant control valve/coolant control valve position sensor circuits are shorted to each other

•  Coolant control valve position sensor malfunction

•  PCM malfunction

DTC U63F:00	SENT communication: Communication error between coolant control valve position sensor and PCM
DETECTION CONDITION	• When any of the following conditions is met: ― SENT communication line malfunction between coolant control valve position sensor and PCM ― The PCM detected a SENT communication type communication error from the coolant control valve position sensor. Diagnostic support note • This is a continuous monitor (CCM). • The check engine light does illuminate. • FREEZE FRAME DATA/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Not applicable
POSSIBLE CAUSE	• SENT communication line error between coolant control valve position sensor and PCM • Coolant control valve/coolant control valve position sensor connector or terminals malfunction • PCM connector or terminals malfunction • Open circuit in wiring harness between the following terminals: ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Short to ground in wiring harness between the following terminals: ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Short to power supply in wiring harness between the following terminals: ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Coolant control valve/coolant control valve position sensor circuits are shorted to each other • Coolant control valve position sensor malfunction • PCM malfunction

Diagnostic Procedure

STEP	INSPECTION	RESULTS	ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the snapshot data on the repair order.	—	Go to the next step.
2	VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available?	Yes	Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	VERIFY DTC FOR MODULE COMMUNICATION • Switch the ignition off, then ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) • Are any other PENDING CODEs and/or DTCs present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC TABLE [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].)
3		No	Go to the next step.
4	INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CONNECTOR CONDITION • Disconnect the coolant control valve/coolant control valve position sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 11.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 11.
5		No	Go to the next step.
6	INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUIT FOR OPEN CIRCUIT • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Is there continuity?	Yes	Go to the next step.
6		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D • Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I • Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 11.
7	INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUIT FOR SHORT TO GROUND • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D • Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I • Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to Step 11.
7		No	Go to the next step.
8	INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage at the following terminals (wiring harness-side): ― Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D ― Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I ― Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG • Is the voltage 0 V?	Yes	Go to the next step.
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D • Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I • Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 11.
9	INSPECT COOLANT CONTROL VALVE/COOLANT CONTROL VALVE POSITION SENSOR CIRCUITS FOR SHORT TO EACH OTHER • Verify that the coolant control valve/coolant control valve position sensor and PCM connectors are disconnected. • Inspect for continuity between coolant control valve/coolant control valve position sensor terminals C, D and E (wiring harness-side). • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Coolant control valve/coolant control valve position sensor terminal C—PCM terminal 1D • Coolant control valve/coolant control valve position sensor terminal D—PCM terminal 1I • Coolant control valve/coolant control valve position sensor terminal E—PCM terminal 1BG If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to each other. Go to Step 11.
9		No	Go to the next step.
10	INSPECT COOLANT CONTROL VALVE POSITION SENSOR • Inspect the coolant control valve position sensor. (See COOLANT CONTROL VALVE POSITION SENSOR INSPECTION [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].) • Is there any malfunction?	Yes	Replace the coolant control valve, then go to Step 11. (See COOLANT CONTROL VALVE POSITION SENSOR REMOVAL/INSTALLATION [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].)
10		No	Go to the next step.
11	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].) Go to the next step.
11		No	Go to the next step.
12	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5))].)
12		No	DTC troubleshooting completed.