Content .. 99 100 101 102 ..

Honda Odyssey 2004. Manual - part 101

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DTC P0112

’99-00, ’02-04 Models:

YES

11-102

PGM-FI System

DTC Troubleshooting (cont’d)

IAT SENSOR 2P CONNECTOR

IAT
(RED/YEL)

IAT

Sensor Circuit Low Voltage

1. Turn the ignition switch ON (II).

2. Check the IAT with the scan tool or the HDS.

Go to step 3.

Go to step 8.

3. Disconnect the IAT sensor 2P connector.

4. Check the IAT with the scan tool or the HDS.

Go to step 5.

Replace the IAT sensor.

5. Turn the ignition switch OFF.

6. Disconnect PCM connector C (31P).

7. Check for continuity between IAT sensor 2P

connector terminal No. 2 and body ground.

Repair short in the wire between the PCM

(C25) and the IAT sensor.

Substitute a known-good PCM and recheck

(see page 11-5). If normal IAT readings are
indicated, replace the original PCM.

8. Check the temperature reading on the scan tool.

If the engine is warm, the reading will be higher
than ambient temperature. If the engine is cold, the
IAT and ECT will have the same value.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the IAT sensor and the PCM.

Replace the IAT sensor.

Wire side of female terminals

Is 302°F ( 150°C) or higher ( or H-Limit in the HDS),
or 0 V indicated?

Is ther e continuity?

Is the cor r ect ambient temper atur e indicated?

03/07/29 09:21:09 61S0X050_110_0102

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DTC P0112

’01 Model:

YES

11-103

IAT SENSOR 2P CONNECTOR

IAT
(RED/YEL)

IAT Sensor Circuit

Low Voltage

1. Turn the ignition switch ON (II).

2. Check the IAT with the scan tool or the HDS.

Go to step 3.

Go to step 8.

3. Disconnect the IAT sensor 2P connector.

4. Check the IAT with the scan tool or the HDS.

Go to step 5.

Replace the IAT sensor.

5. Turn the ignition switch OFF.

6. Disconnect PCM connector A (31P).

7. Check for continuity between IAT sensor 2P

connector terminal No. 2 and body ground.

Repair short in the wire between the PCM

(A14) and the IAT sensor.

Substitute a known-good PCM and recheck

(see page 11-5). If normal IAT readings are
indicated, replace the original PCM.

8. Check the temperature reading on the scan tool.

If the engine is warm, the reading will be higher
than ambient temperature. If the engine is cold, the
IAT and ECT will have the same value.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the IAT sensor and the PCM.

Replace the IAT sensor.

Wire side of female terminals

Is 302°F ( 150°C) or higher ( or H-Limit in the HDS),
or 0 V indicated?

Is ther e continuity?

Is the cor r ect ambient temper atur e indicated?

03/07/29 09:21:09 61S0X050_110_0103

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DTC P0113

’99-00, ’02-04 Models:

YES

11-104

PGM-FI System

DTC Troubleshooting (cont’d)

IAT SENSOR 2P CONNECTOR

SG2 (GRN/BLK)

JUMPER WIRE

IAT (RED/YEL)

SG2 (GRN/YEL)*

PCM CONNECTOR C (31P)

IAT (RED/YEL)

SG2 (GRN/BLK)

JUMPER WIRE

SG2 (GRN/YEL)*

IAT

Sensor Circuit High Voltage

NOTE: Information marked with an asterisk ( ) applies
to ’02-04 models.

1. Turn the ignition switch ON (II).

2. Check the IAT with the scan tool or the HDS.

Go to step 3.

Intermitent failure, system is OK at this time.

Check for poor connections or loose terminals at
the IAT sensor and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the IAT sensor 2P connector.

5. Connect IAT sensor 2P connector terminals No. 1

and No. 2 with a jumper wire.

6. Turn the ignition switch ON (II).

7. Check the IAT with the scan tool or the HDS.

Go to step 8.

Replace the IAT sensor.

8. Turn the ignition switch OFF.

9. Remove the jumper wire.

10. Connect PCM connector terminals C18 and C25

with a jumper wire.

11. Turn the ignition switch ON (II).

12. Check the IAT with the scan tool or the HDS.

Substitute a known-good PCM and recheck

(see page 11-5). If normal IAT readings are
indicated, replace the original PCM.

Repair open in the wire between the PCM

(C18, C25) and the IAT sensor.

Wire side of female terminals

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

03/07/29 09:21:10 61S0X050_110_0104

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DTC P0113

’01 Model:

YES

11-105

IAT SENSOR 2P CONNECTOR

SG2 (GRN/BLK)

JUMPER WIRE

IAT (RED/YEL)

PCM CONNECTOR A (31P)

JUMPER WIRE

SG2 (GRN/BLK)

IAT (RED/YEL)

IAT Sensor Circuit

High Voltage

1. Turn the ignition switch ON (II).

2. Check the IAT with the scan tool or the HDS.

Go to step 3.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the IAT sensor and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the IAT sensor 2P connector.

5. Connect IAT sensor 2P connector terminals No. 1

and No. 2 with a jumper wire.

6. Turn the ignition switch ON (II).

7. Check the IAT with the scan tool or the HDS.

Go to step 8.

Replace the IAT sensor.

8. Turn the ignition switch OFF.

9. Remove the jumper wire.

10. Connect PCM connector terminals A14 and A28

with a jumper wire.

11. Turn the ignition switch ON (II).

12. Check the IAT with the scan tool or the HDS.

Substitute a known-good PCM and recheck

(see page 11-5). If normal IAT readings are
indicated, replace the original PCM.

Repair open in the wire between the PCM

(A14, A28) and the IAT sensor.

Wire side of female terminals

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

4°F (

20°C) or less ( or L-Limit in the HDS),

or 5 V indicated?

03/07/29 09:21:11 61S0X050_110_0105

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