DTC P0C39:00 [i-ELOOP]

id130201000800

DTC P0C39:00

Capacitor (i-ELOOP) temperature sensor system: function/circuit malfunction

DETECTION CONDITION

•  Any one of the following conditions is met:

―  A condition in which the capacitor (i-ELOOP) temperature sensor voltage is less than 0.05 V (less than −50 °C {−58 °F}) continues for 1 s.

―  A condition in which the capacitor (i-ELOOP) temperature sensor voltage is 4.95 V or more (90 °C {194 °F} or more) continues for 1 s.

FAIL-SAFE FUNCTION

•  Not applicable

POSSIBLE CAUSE

•  Capacitor (i-ELOOP) connector or terminals malfunction

•  DC-DC converter (i-ELOOP) connector or terminals malfunction

•  Short to ground in wiring harness between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E

•  Short to power supply in wiring harness between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E

•  Capacitor (i-ELOOP) temperature sensor signal circuit and ground circuit are shorted to each other

•  Open circuit in wiring harness between the following terminals:

―  Capacitor (i-ELOOP) terminal 1A—DC-DC converter (i-ELOOP) terminal 1E

―  Capacitor (i-ELOOP) terminal 1B—DC-DC converter (i-ELOOP) terminal 1D

•  Capacitor (i-ELOOP) temperature sensor malfunction

•  DC-DC converter (i-ELOOP) malfunction

DTC P0C39:00	Capacitor (i-ELOOP) temperature sensor system: function/circuit malfunction
DETECTION CONDITION	• Any one of the following conditions is met: ― A condition in which the capacitor (i-ELOOP) temperature sensor voltage is less than 0.05 V (less than −50 °C {−58 °F}) continues for 1 s. ― A condition in which the capacitor (i-ELOOP) temperature sensor voltage is 4.95 V or more (90 °C {194 °F} or more) continues for 1 s.
FAIL-SAFE FUNCTION	• Not applicable
POSSIBLE CAUSE	• Capacitor (i-ELOOP) connector or terminals malfunction • DC-DC converter (i-ELOOP) connector or terminals malfunction • Short to ground in wiring harness between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E • Short to power supply in wiring harness between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E • Capacitor (i-ELOOP) temperature sensor signal circuit and ground circuit are shorted to each other • Open circuit in wiring harness between the following terminals: ― Capacitor (i-ELOOP) terminal 1A—DC-DC converter (i-ELOOP) terminal 1E ― Capacitor (i-ELOOP) terminal 1B—DC-DC converter (i-ELOOP) terminal 1D • Capacitor (i-ELOOP) temperature sensor malfunction • DC-DC converter (i-ELOOP) malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	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.
1		No	Go to the next step.
2	INSPECT CAPACITOR (i-ELOOP) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Remove the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) • Disconnect the capacitor (i-ELOOP) 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 9.
2		No	Go to the next step.
3	INSPECT DC-DC CONVERTER (i-ELOOP) CONNECTOR CONDITION • Disconnect the DC-DC converter (i-ELOOP) 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 9.
3		No	Go to the next step.
4	INSPECT CAPACITOR (i-ELOOP) TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Verify that the capacitor (i-ELOOP) and DC-DC converter (i-ELOOP) connectors are disconnected. • Inspect for continuity between capacitor (i-ELOOP) terminal 1A (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E. 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 9.
4		No	Go to the next step.
5	INSPECT CAPACITOR (i-ELOOP) TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the capacitor (i-ELOOP) and DC-DC converter (i-ELOOP) connectors are disconnected. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Switch the ignition ON (engine off). • Measure the voltage at the capacitor (i-ELOOP) terminal 1A (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between capacitor (i-ELOOP) terminal 1A and DC-DC converter (i-ELOOP) terminal 1E. 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 9.
6	INSPECT CAPACITOR (i-ELOOP) TEMPERATURE SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER • Verify that the capacitor (i-ELOOP) and DC-DC converter (i-ELOOP) connectors are disconnected. • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Inspect for continuity between capacitor (i-ELOOP) terminals 1A and 1B (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: • Capacitor (i-ELOOP) terminal 1A—DC-DC converter (i-ELOOP) terminal 1E • Capacitor (i-ELOOP) terminal 1B—DC-DC converter (i-ELOOP) terminal 1D 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 9.
6		No	Go to the next step.
7	INSPECT CAPACITOR (i-ELOOP) TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT • Verify that the capacitor (i-ELOOP) and DC-DC converter (i-ELOOP) connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Capacitor (i-ELOOP) terminal 1A—DC-DC converter (i-ELOOP) terminal 1E ― Capacitor (i-ELOOP) terminal 1B—DC-DC converter (i-ELOOP) terminal 1D • Is there continuity?	Yes	Go to the next step.
7		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Capacitor (i-ELOOP) terminal 1A—DC-DC converter (i-ELOOP) terminal 1E • Capacitor (i-ELOOP) terminal 1B—DC-DC converter (i-ELOOP) terminal 1D 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 9.
8	INSPECT CAPACITOR (i-ELOOP) TEMPERATURE SENSOR • Inspect the capacitor (i-ELOOP) temperature sensor. (See CAPACITOR (i-ELOOP) INSPECTION [i-ELOOP].) • Is there any malfunction?	Yes	Replace the capacitor (i-ELOOP), then go to the next step. (See CAPACITOR (i-ELOOP) REMOVAL/INSTALLATION [i-ELOOP].)
8		No	Go to the next step.
9	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Reinstall the service plug. (See SERVICE PLUG DISCONNECTION/CONNECTION [i-ELOOP].) • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Clear the DTC for the DC-DC converter (i-ELOOP) using the M-MDS. (See CLEARING DTC [i-ELOOP].) • Switch the ignition off. • Switch the ignition ON (engine on) and wait for 1 s or more. • Retrieve the DC-DC converter (i-ELOOP) DTCs using the M-MDS. (See DTC INSPECTION [i-ELOOP].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the DC-DC converter (i-ELOOP). (See DC-DC CONVERTER (i-ELOOP) REMOVAL/INSTALLATION [i-ELOOP].) Go to the next step.
9		No	Go to the next step.
10	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [i-ELOOP].)
10		No	DTC troubleshooting completed.