DTC P1118:00 [PCM (SKYACTIV-D 2.2)]

id0102j5218800

DTC P1118:00

IAT sensor No.2 circuit low input

DETECTION CONDITION

•  With the following conditions met, the intake air temperature sensor No.2 output voltage is less than 0.29 V for a continuous 0.6 s.

―  Battery voltage: 8—16 V

―  0.5 s have elapsed after ignition is switched ON (engine off or on)

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/Snapshot data is available.

•  DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

•  Limits engine torque.

•  Inhibits the EGR control.

POSSIBLE CAUSE

•  Intake air temperature is abnormally high

•  IAT sensor No.2 connector or terminal malfunction

•  IAT sensor No.2 malfunction

•  Short to ground in wiring harness between intake air temperature sensor No.2 terminal A and PCM terminal 1CM

•  PCM connector or terminal malfunction

•  Short circuit in IAT sensor No.2 signal circuit and ground circuit

•  PCM malfunction

DTC P1118:00	IAT sensor No.2 circuit low input
DETECTION CONDITION	• With the following conditions met, the intake air temperature sensor No.2 output voltage is less than 0.29 V for a continuous 0.6 s. ― Battery voltage: 8—16 V ― 0.5 s have elapsed after ignition is switched ON (engine off or on) 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/Snapshot data is available. • DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	• Limits engine torque. • Inhibits the EGR control.
POSSIBLE CAUSE	• Intake air temperature is abnormally high • IAT sensor No.2 connector or terminal malfunction • IAT sensor No.2 malfunction • Short to ground in wiring harness between intake air temperature sensor No.2 terminal A and PCM terminal 1CM • PCM connector or terminal malfunction • Short circuit in IAT sensor No.2 signal circuit and ground circuit • PCM malfunction

Diagnostic Procedure

Step

Inspection

Results

Action

1

RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION

Note

•  Recording can be facilitated using the screen capture function of the PC.

•  Record the freeze frame data/snap shot data.

—

Go to the next step.

2

INSPECT IAT SENSOR NO.2 CONNECTOR CONNECTION

•  Switch the ignition OFF.

•  Disconnect the IAT sensor No.2 connector.

•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

•  Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

3

INSPECT PCM CONNECTOR CONDITION

•  Disconnect the PCM connector.

•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.

•  Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 7.

4

DETERMINE IF MALFUNCTION IS CAUSED BY IAT SENSOR NO.2 MALFUNCTION OR WIRING HARNESS SIDE MALFUNCTION

•  Verify that the intake air temperature sensor No.2 connector is disconnected.

•  Switch the ignition ON (engine off).

Note

•  Another DTC may be stored by the PCM detecting an open circuit.

•  Measure the voltage at intake air temperature sensor No.2 terminal A (vehicle wiring harness side).

•  Is the voltage approx. 5 V?

Yes

Replace IAT sensor No.2, then go to Step 7.

(See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Go to the next step.

5

INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT FOR SHORT TO GROUND

•  Verify that the IAT sensor No.2 connector and the PCM connector are disconnected.

•  Switch the ignition OFF.

•  Inspect for continuity between IAT sensor No.2 terminal A (vehicle wiring harness) and body ground.

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between IAT sensor No.2 terminal A and PCM terminal 1CM.

If there is a common connector:

•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.

•  Repair or replace the malfunctioning location.

If there is no common connector:

•  Repair or replace the wiring harness which is shorted to ground.

Go to Step 7.

No

Go to the next step.

6

INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT

•  Verify that the IAT sensor No.2 connector and the PCM connector are disconnected.

•  Inspect for continuity between IAT sensor No.2 terminals A and B (vehicle wiring harness).

•  Is there continuity?

Yes

Refer to the wiring diagram and verify if there is a common connector between the following terminals.

•  IAT sensor No.2 terminal A and PCM terminal 1CM

•  IAT sensor No.2 terminal B and PCM terminal 1AH

If there is a common connector:

―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location.

―  Repair or replace the malfunctioning location.

If there is no common connector:

―  Repair or replace the malfunctioning wiring harness.

Go to the next step.

No

Go to the next step.

7

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

•  Reconnect all the disconnected connectors.

•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
(See CLEARING DTC [PCM (SKYACTIV-D 2.2)].)

•  Perform the KOEO or KOER self-test.
(See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)].)

•  Has DTC P1118:00 been recorded?

Yes

Repeat the inspection from Step 1.

•  If the malfunction recurs, replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

No

Go to the next step.

8

VERIFY OTHER DTCs

•  Has any other DTC or pending code been stored?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)

No

DTC troubleshooting completed.

Step	Inspection	Results	Action
1	RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION Note • Recording can be facilitated using the screen capture function of the PC. • Record the freeze frame data/snap shot data.	—	Go to the next step.
2	INSPECT IAT SENSOR NO.2 CONNECTOR CONNECTION • Switch the ignition OFF. • Disconnect the IAT sensor No.2 connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 7.
3	INSPECT PCM CONNECTOR CONDITION • Disconnect the PCM connector. • Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to Step 7.
4	DETERMINE IF MALFUNCTION IS CAUSED BY IAT SENSOR NO.2 MALFUNCTION OR WIRING HARNESS SIDE MALFUNCTION • Verify that the intake air temperature sensor No.2 connector is disconnected. • Switch the ignition ON (engine off). Note • Another DTC may be stored by the PCM detecting an open circuit. • Measure the voltage at intake air temperature sensor No.2 terminal A (vehicle wiring harness side). • Is the voltage approx. 5 V?	Yes	Replace IAT sensor No.2, then go to Step 7. (See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
4		No	Go to the next step.
5	INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT FOR SHORT TO GROUND • Verify that the IAT sensor No.2 connector and the PCM connector are disconnected. • Switch the ignition OFF. • Inspect for continuity between IAT sensor No.2 terminal A (vehicle wiring harness) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between IAT sensor No.2 terminal A and PCM terminal 1CM. If there is a common connector: • Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location. • Repair or replace the malfunctioning location. If there is no common connector: • Repair or replace the wiring harness which is shorted to ground. Go to Step 7.
5		No	Go to the next step.
6	INSPECT IAT SENSOR NO.2 SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT • Verify that the IAT sensor No.2 connector and the PCM connector are disconnected. • Inspect for continuity between IAT sensor No.2 terminals A and B (vehicle wiring harness). • Is there continuity?	Yes	Refer to the wiring diagram and verify if there is a common connector between the following terminals. • IAT sensor No.2 terminal A and PCM terminal 1CM • IAT sensor No.2 terminal B and PCM terminal 1AH If there is a common connector: ― Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location. ― Repair or replace the malfunctioning location. If there is no common connector: ― Repair or replace the malfunctioning wiring harness. Go to the next step.
6		No	Go to the next step.
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors. • Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC. (See CLEARING DTC [PCM (SKYACTIV-D 2.2)].) • Perform the KOEO or KOER self-test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-D 2.2)].) • Has DTC P1118:00 been recorded?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
7		No	Go to the next step.
8	VERIFY OTHER DTCs • Has any other DTC or pending code been stored?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
8		No	DTC troubleshooting completed.