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Honda Odyssey 2004. Manual - part 103

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DTC P0122

’99-00, ’02-04 Models:

YES

11-110

PGM-FI System

DTC Troubleshooting (cont’d)

TP SENSOR 3P CONNECTOR

SG2 (GRN/BLK)

VCC2 (YEL/BLU)

SG2 (GRN/YEL)*

TP SENSOR 3P CONNECTOR

SG2

TPS

TP SENSOR 3P CONNECTOR

VCC2

TPS

TP Sensor

Circuit Low Voltage

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

1. Start the engine. Hold the engine at 3,000 rpm with

no load (in Park or neutral) until the radiator fan
comes on, then turn the ignition switch OFF.

2. Turn the ignition switch ON (II).

3. Check the throttle position with the scan tool or the

HDS.

Intermittent failure, system is OK at this time.

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

Go to step 4.

4. Turn the ignition switch OFF.

5. Disconnect the TP sensor 3P connector.

6. Turn the ignition switch ON (II).

7. Measure voltage between TP sensor 3P connector

terminals No. 1 and No. 3.

Go to step 8.

Go to step 15.

8. Turn the ignition switch OFF.

9. At the sensor side, measure resistance between TP

sensor 3P connector terminals No. 1 and No. 2 with
the throttle fully closed.

Go to step 10.

10. Measure resistance between TP sensor 3P

connector terminals No. 2 and No. 3 with the
throttle fully closed.

Go to step 11.

11. Disconnect PCM connector C (31P).

Wire side of female terminals

Terminal side of male terminals

Is ther e about 10 % or 0.5 V when the thr ottle is
f ully closed and about 90 % or 4.5 V when the
thr ottle is f ully opened?

Is ther e about 5 V ?

Is ther e about 0.5

0.9 k

Is ther e about 4.5 k

03/07/29 09:21:13 61S0X050_110_0110

Replace the throttle body.

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YES

11-111

TP SENSOR 3P CONNECTOR

TPS (RED/BLK)

PCM CONNECTOR C (31P)

TPS (RED/BLK)

JUMPER WIRE

TP SENSOR 3P CONNECTOR

TPS (RED/BLK)

SG2 (GRN/BLK)

VCC2 (YEL/BLU)

SG2 (GRN/YEL)*

PCM CONNECTOR C (31P)

12. At the wire harness side, check for continuity

between TP sensor 3P connector terminal No. 2
and body ground.

Repair short in the wire between the PCM

(C27) and the TP sensor.

Go to step 13.

13. Connect PCM connector terminal C27 and body

ground with a jumper wire.

14. At the wire harness side, check for continuity

between TP sensor 3P connector terminal No. 2
and body ground.

Substitute a known-good PCM and recheck

(see page 11-5). If the prescribed voltage is now
available, replace the original PCM.

Repair open in the wire between the PCM

(C27) and the TP sensor.

15. Measure voltage between PCM connector

terminals C18 and C28.

Repair open in the wire between the PCM

(C28) and the TP sensor.

Substitute a known-good PCM and recheck

(see page 11-5). If the prescribed voltage is now
available, replace the original PCM.

Wire side of female terminals

Is ther e continuity?

Is ther e about 5 V ?

03/07/29 09:21:14 61S0X050_110_0111

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DTC P0122

’01 Model:

YES

11-112

PGM-FI System

DTC Troubleshooting (cont’d)

TP SENSOR 3P CONNECTOR

SG2 (GRN/BLK)

VCC2 (YEL/BLU)

TP SENSOR 3P CONNECTOR

SG2

TPS

TP SENSOR 3P CONNECTOR

VCC2

TPS

TP Sensor Circuit

Low Voltage

1. Start the engine. Hold the engine at 3,000 rpm with

no load (in Park or neutral) until the radiator fan
comes on, then turn the ignition switch OFF.

2. Turn the ignition switch ON (II).

3. Check the throttle position with the scan tool or the

HDS.

Intermittent failure, system is OK at this time.

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

Go to step 4.

4. Turn the ignition switch OFF.

5. Disconnect the TP sensor 3P connector.

6. Turn the ignition switch ON (II).

7. Measure voltage between TP sensor 3P connector

terminals No. 1 and No. 3.

Go to step 8.

Go to step 15.

8. Turn the ignition switch OFF.

9. At the sensor side, measure resistance between TP

sensor 3P connector terminals No. 1 and No. 2 with
the throttle fully closed.

Go to step 10.

10. Measure resistance between the TP sensor 3P

connector terminals No. 2 and No. 3 with the
throttle fully closed.

Go to step 11.

11. Disconnect PCM connector A (31P).

Wire side of female terminals

Terminal side of male terminals

Is ther e about 10 % or 0.5 V when the thr ottle is
f ully closed and about 90 % or 4.5 V when the
thr ottle is f ully opened?

Is ther e about 5 V ?

Is ther e about 0.5

0.9 k

Is ther e about 4.5 k

03/07/29 09:21:14 61S0X050_110_0112

Replace the throttle body.

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YES

11-113

TP SENSOR 3P CONNECTOR

TPS (RED/BLK)

PCM CONNECTOR A (31P)

JUMPER WIRE

TPS (RED/BLK)

TP SENSOR 3P CONNECTOR

TPS (RED/BLK)

PCM CONNECTOR A (31P)

VCC2
(YEL/BLU)

SG2 (GRN/BLK)

12. At the wire harness side, check for continuity

between TP sensor 3P connector terminal No. 2
and body ground.

Repair short in the wire between the PCM

(A15) and the TP sensor.

Go to step 13.

13. Connect PCM connector terminal A15 and body

ground with a jumper wire.

14. At the wire harness side, check for continuity

between TP sensor 3P connector terminal No. 2
and body ground.

Substitute a known-good PCM and recheck

(see page 11-5). If the prescribed voltage is now
available, replace the original PCM.

Repair open in the wire between the PCM

(A15) and the TP sensor.

15. Measure voltage between PCM connector

terminals A28 and A30.

Repair open in the wire between the PCM

(A30) and the TP sensor.

Substitute a known-good PCM and recheck

(see page 11-5). If the prescribed voltage is now
available, replace the original PCM.

Wire side of female terminals

Is ther e continuity?

Is ther e about 5 V ?

03/07/29 09:21:15 61S0X050_110_0113

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