DTC P0098:00 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0102h9146500

DTC P0098:00

IAT sensor No.2 circuit high input

DETECTION CONDITION

•  If the PCM detects that the IAT sensor No.2 voltage at the PCM terminal 1CE is 4.96 V or more for 5 s, the PCM determines that the IAT sensor No.2 circuit voltage is high.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

Not applicable

POSSIBLE CAUSE

•  MAP sensor/IAT sensor No.2 connector or terminals malfunction

•  PCM connector or terminals malfunction

•  IAT sensor No.2 malfunction

•  Short to power supply in wiring harness between MAP sensor/IAT sensor No.2 terminal B and PCM terminal 1CE

•  Open circuit in wiring harness between the following terminals:

―  MAP sensor/IAT sensor No.2 terminal B—PCM terminal 1CE

―  MAP sensor/IAT sensor No.2 terminal A—PCM terminal 1BX

•  PCM malfunction

DTC P0098:00	IAT sensor No.2 circuit high input
DETECTION CONDITION	• If the PCM detects that the IAT sensor No.2 voltage at the PCM terminal 1CE is 4.96 V or more for 5 s, the PCM determines that the IAT sensor No.2 circuit voltage is high. Diagnostic support note • This is a continuous monitor (CCM). • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	• MAP sensor/IAT sensor No.2 connector or terminals malfunction • PCM connector or terminals malfunction • IAT sensor No.2 malfunction • Short to power supply in wiring harness between MAP sensor/IAT sensor No.2 terminal B and PCM terminal 1CE • Open circuit in wiring harness between the following terminals: ― MAP sensor/IAT sensor No.2 terminal B—PCM terminal 1CE ― MAP sensor/IAT sensor No.2 terminal A—PCM terminal 1BX • PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then 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	DETERMINE IF IAT SENSOR NO.2 OR WIRING HARNESS MALFUNCTION • Access the IAT2 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Verify the IAT2 PID value. • Is the IAT2 PID value 5 V or B+?	Yes	Go to Step 7.
3		No	Go to the next step.
4	INSPECT MAP SENSOR/IAT SENSOR NO.2 CONNECTOR CONDITION • Switch the ignition off. • Disconnect the MAP sensor/IAT sensor No.2 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.
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 10.
5		No	Go to the next step.
6	INSPECT IAT SENSOR NO.2 • Inspect the IAT sensor No.2. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Is there any malfunction?	Yes	Replace the MAP sensor/IAT sensor No.2, then go to Step 10. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
6		No	Go to Step 10.
7	DETERMINE IF IAT SENSOR NO.2 SIGNAL CIRCUIT OR IAT SENSOR NO.2 GROUND CIRCUIT MALFUNCTION • Switch the ignition off. • Disconnect the MAP sensor/IAT sensor No.2 connector. • Access the IAT2 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Verify the IAT2 PID value. • Is the IAT2 PID value 5 V or B+?	Yes	Go to the next step.
7		No	Go to Step 9.
8	INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT FOR OPEN CIRCUIT • Verify that the MAP sensor/IAT sensor No.2 connector is disconnected. • Switch the ignition off. • Disconnect the PCM connector. • Inspect for continuity between MAP sensor/IAT sensor No.2 terminal B (wiring harness-side) and PCM terminal 1CE (wiring harness-side). • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between MAP sensor/IAT sensor No.2 terminal B and PCM terminal 1CE. 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 10.
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between MAP sensor/IAT sensor No.2 terminal B and PCM terminal 1CE. 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 10.
9	INSPECT IAT SENSOR NO.2 GROUND CIRCUIT FOR OPEN CIRCUIT • Verify that the MAP sensor/IAT sensor No.2 connector is disconnected. • Switch the ignition off. • Disconnect the PCM connector. • Inspect for continuity between MAP sensor/IAT sensor No.2 terminal A (wiring harness-side) and PCM terminal 1BX (wiring harness-side). • Is there continuity?	Yes	Replace the MAP sensor/IAT sensor No.2, then go to the next step. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
9		No	Refer to the wiring diagram and verify whether or not there is a common connector between MAP sensor/IAT sensor No.2 terminal A and PCM terminal 1BX. 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 the next step.
10	VERIFY DTC TROUBLESHOOTING COMPLETED • Always reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [SKYACTIV-G 1.5, 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 [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) 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 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
11		No	DTC troubleshooting completed.