DTC P1103:00, P1103:22, P1103:85 [MZ-CD 1.6]

DTC P1103:00 DTC P1103:22 DTC P1103:85	Mass air flow (MAF) sensor in range but higher than expected
DETECTION CONDITION	• The PCM compares actual input from MAF sensor with expected MAF amount that PCM calculates by engine running condition. If the actual MAF signal is excessive higher than expected value, the PCM determines that the MAF sensor signal is higher than expected.
POSSIBLE CAUSE	• MAF sensor malfunction • Electrical corrosion in MAF sensor ground circuit • Voltage drops in ground circuit • PCM malfunction

DTC P1103:00

DTC P1103:22

DTC P1103:85

Mass air flow (MAF) sensor in range but higher than expected

DETECTION CONDITION

• The PCM compares actual input from MAF sensor with expected MAF amount that PCM calculates by engine running condition. If the actual MAF signal is excessive higher than expected value, the PCM determines that the MAF sensor signal is higher than expected.

POSSIBLE CAUSE

• MAF sensor malfunction

• Electrical corrosion in MAF sensor ground circuit

• Voltage drops in ground circuit

• PCM malfunction

STEP	INSPECTION	ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA been recorded?	Yes	Go to the next step.
No	Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No	Go to the next step.
3	IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA • Is P1103:00, P1103:22, P1103:85 on FREEZE FRAME DATA?	Yes	Go to the next step.
No	Go to troubleshooting procedures for DTC in FREEZE FRAME DATA. (See DTC TABLE [MZ-CD 1.6].)
4	INSPECT MAF SENSOR TERMINALS FOR ELECTRICAL CORROSION • Switch the ignition to off. • Disconnect MAF sensor connector. • Check poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction?	Yes	Repair or replace suspected terminal or MAF sensor, then go to Step 7.
No	Go to the next step.
5	INSPECT MAF SENSOR CONDITION • Switch the ignition to off. • Remove the MAF sensor. • Inspect MAF sensor condition. • Are there any contaminations (oil, water, dust, etc.) on MAF sensor?	Yes	Remove contaminates from MAF sensor, then go to Step 7.
No	Go to the next step.
6	INSPECT POOR CONNECTION OF PCM CONNECTOR • Disconnect PCM sensor connector. • Check poor connection (damaged, pulled-out terminals, corrosion, etc.). • Is there any malfunction?	Yes	Repair or replace suspected terminal, then go to the next step.
No	Replace the MAF sensor, then go to the next step.
7	VERIFY THAT DTC P1103:00, P1103:22, P1103:85 TROUBLESHOOTING IS COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. • Start the engine and warm-up to normal operating temperature. • Race the engine for several times. • Retrieve the DTC using the M-MDS. • Is the PENDING CODE same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].) Go to the next step.
No	Go to the next step.
8	VERIFY AFTER REPAIR PROCEDURE • Perform the after repair procedure. (See AFTER REPAIR PROCEDURE [MZ-CD 1.6].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZ-CD 1.6].)
No	DTC troubleshooting completed.

STEP

INSPECTION

ACTION

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

• Has the FREEZE FRAME DATA been recorded?

Yes

Go to the next step.

Record the FREEZE FRAME DATA on the repair order, then go to the next step.

VERIFY RELATED REPAIR INFORMATION AVAILABILITY

• Verify related service repair information availability.

• Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

• If the vehicle is not repaired, go to the next step.

Go to the next step.

IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA

• Is P1103:00, P1103:22, P1103:85 on FREEZE FRAME DATA?

Yes

Go to the next step.

Go to troubleshooting procedures for DTC in FREEZE FRAME DATA.

(See DTC TABLE [MZ-CD 1.6].)

INSPECT MAF SENSOR TERMINALS FOR ELECTRICAL CORROSION

• Switch the ignition to off.

• Disconnect MAF sensor connector.

• Check poor connection (damaged, pulled-out terminals, corrosion, etc.).

• Is there any malfunction?

Yes

Repair or replace suspected terminal or MAF sensor, then go to Step 7.

Go to the next step.

INSPECT MAF SENSOR CONDITION

• Switch the ignition to off.

• Remove the MAF sensor.

• Inspect MAF sensor condition.

• Are there any contaminations (oil, water, dust, etc.) on MAF sensor?

Yes

Remove contaminates from MAF sensor, then go to Step 7.

Go to the next step.

INSPECT POOR CONNECTION OF PCM CONNECTOR

• Disconnect PCM sensor connector.

• Check poor connection (damaged, pulled-out terminals, corrosion, etc.).

• Is there any malfunction?

Yes

Repair or replace suspected terminal, then go to the next step.

Replace the MAF sensor, then go to the next step.

VERIFY THAT DTC P1103:00, P1103:22, P1103:85 TROUBLESHOOTING IS COMPLETED

• Make sure to reconnect all disconnected connectors.

• Clear the DTC from the PCM memory using the M-MDS.

• Start the engine and warm-up to normal operating temperature.

• Race the engine for several times.

• Retrieve the DTC using the M-MDS.

• Is the PENDING CODE same DTC present?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the PCM.

(See PCM REMOVAL/INSTALLATION [MZ-CD 1.6].)

Go to the next step.

VERIFY AFTER REPAIR PROCEDURE

• Perform the after repair procedure.

(See AFTER REPAIR PROCEDURE [MZ-CD 1.6].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [MZ-CD 1.6].)

DTC troubleshooting completed.