DTC P2308:00 [SKYACTIV-G 2.0]

id0102h1743200

DTC P2308:00

Ion sensor No.3 circuit problem

DETECTION CONDITION

•  When the engine speed is 2,000 rpm or less, the signal input to the PCM from ion sensor No.3 is in error.

Diagnostic support note

•  This is a continuous monitor (other).

•  The MIL does not illuminate.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.

•  The DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

—

POSSIBLE CAUSE

•  Ignition coil/ion sensor No.3 connector or terminals malfunction

•  Short to ground or open circuit in ion sensor No.3 power supply circuit

―  Short to ground in wiring harness between ENG INJ2 15 A fuse and ignition coil/ion sensor No.3 terminal A

―  ENG INJ2 15 A fuse malfunction

―  Open circuit in wiring harness between main relay terminal C and ignition coil/ion sensor No.3 terminal A

•  Open circuit in wiring harness between ignition coil/ion sensor No.3 terminal D and body ground

•  Short to ground in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA

•  PCM connector or terminals malfunction

•  Short to power supply in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA

•  Open circuit in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA

•  Ion sensor No.3 malfunction

•  PCM malfunction

DTC P2308:00	Ion sensor No.3 circuit problem
DETECTION CONDITION	• When the engine speed is 2,000 rpm or less, the signal input to the PCM from ion sensor No.3 is in error. Diagnostic support note • This is a continuous monitor (other). • The MIL does not illuminate. • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. • The DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	—
POSSIBLE CAUSE	• Ignition coil/ion sensor No.3 connector or terminals malfunction • Short to ground or open circuit in ion sensor No.3 power supply circuit ― Short to ground in wiring harness between ENG INJ2 15 A fuse and ignition coil/ion sensor No.3 terminal A ― ENG INJ2 15 A fuse malfunction ― Open circuit in wiring harness between main relay terminal C and ignition coil/ion sensor No.3 terminal A • Open circuit in wiring harness between ignition coil/ion sensor No.3 terminal D and body ground • Short to ground in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA • PCM connector or terminals malfunction • Short to power supply in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA • Open circuit in wiring harness between ignition coil/ion sensor No.3 terminal C and PCM terminal 1BA • Ion sensor No.3 malfunction • PCM 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 IGNITION COIL/ION SENSOR NO.3 CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the ignition coil/ion sensor No.3 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 10.
2		No	Go to the next step.
3	INSPECT ION SENSOR NO.3 POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT • Verify that the ignition coil/ion sensor No.3 connector is disconnected. • Switch the ignition to ON (engine off). • Measure the voltage at the ignition coil/ion sensor No.3 terminal A (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
3		No	Inspect the ENG INJ2 15 A fuse. • If the fuse is blown: ― Repair or replace the wiring harness for a possible short to ground. ― Replace the fuse. • If the fuse is deteriorated: ― Replace the fuse. • If the fuse is normal: ― Repair or replace the wiring harness for a possible open circuit. Go to Step 10.
4	INSPECT ION SENSOR NO.3 GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the ignition coil/ion sensor No.3 connector is disconnected. • Switch the ignition to off. • Inspect for continuity between ignition coil/ion sensor No.3 terminal D (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
4		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 10.
5	INSPECT ION SENSOR NO.3 SIGNAL CIRCUIT FOR SHORT TO GROUND • Verify that the ignition coil/ion sensor No.3 connector is disconnected. • Inspect for continuity between ignition coil/ion sensor No.3 terminal C (wiring harness-side) and body ground. • Is there continuity?	Yes	If the short to ground circuit could be detected: • Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: • Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) Go to Step 10.
5		No	Go to the next step.
6	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 10.
6		No	Go to the next step.
7	INSPECT ION SENSOR NO.3 SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the ignition coil/ion sensor No.3 and PCM connectors are disconnected. • Switch the ignition to ON (engine off). • Measure the voltage at the ignition coil/ion sensor No.3 terminal C (wiring harness-side). • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 10.
7		No	Go to the next step.
8	INSPECT ION SENSOR NO.3 SIGNAL CIRCUIT FOR OPEN CIRCUIT • Verify that the ignition coil/ion sensor No.3 and PCM connectors are disconnected. • Switch the ignition to off. • Inspect for continuity between ignition coil/ion sensor No.3 terminal C (wiring harness-side) and PCM terminal 1BA (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 10.
9	INSPECT ION SENSOR NO.3 • Inspect the ion sensor No.3. (See ION SENSOR INSPECTION [SKYACTIV-G 2.0].) • Is there any malfunction?	Yes	Replace the ignition coil/ion sensor No.3, then go to the next step. (See ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
9		No	Go to the next step.
10	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].) • Start the engine. • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [SKYACTIV-G 2.0].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].) Go to the next step.
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [SKYACTIV-G 2.0].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 2.0].)
11		No	DTC troubleshooting completed.