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Honda Odyssey 2004. Manual - part 107

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DTC P0138

’01 Model:

YES

11-126

PGM-FI System

DTC Troubleshooting (cont’d)

SECONDARY HO2S
(SENSOR 2) 4P CONNECTOR

JUMPER WIRE

SG3 (GRN/BLK)

SHO2S (WHT/RED)

PCM CONNECTORS E (31P)

JUMPER WIRE

SG3 (GRN/BLK)

SHO2S
(WHT/RED)

Secondary HO2S

(Sensor 2) Circuit High Voltage

1. Reset the PCM (see page 11-4).

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

no load (in Park or neutral) until the radiator fan
comes on.

3. Check the secondary HO2S (Sensor 2) output

voltage at 3,000 rpm with the scan tool or the HDS.

Go to step 4.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the secondary HO2S (Sensor 2) and the PCM.

4. Turn the ignition switch OFF.

5. Disconnect the secondary HO2S (Sensor 2) 4P

connector.

6. Connect secondary HO2S (Sensor 2) 4P connector

terminals No. 1 and No. 2 with a jumper wire.

7. Turn the ignition switch ON (II).

8. Check the secondary HO2S (Sensor 2) output

voltage with the scan tool or the HDS.

Go to step 9.

Replace the secondary HO2S (Sensor 2).

9. Turn the ignition switch OFF.

10. Connect PCM connector terminals E7 and E18 with

a jumper wire.

11. Turn the ignition switch ON (II).

12. Check the secondary HO2S (Sensor 2) output

voltage with the scan tool or the HDS.

Substitute a known-good PCM and recheck

(see page 11-5). If the symptom/indication goes
away, replace the original PCM.

Repair open in the wire between the PCM

(E7, E18) and the secondary HO2S (Sensor 2).

Terminal side of male terminals

Wire side of female terminals

Does the voltage stay at 1.0 V or mor e?

Is ther e 1.0 V or mor e?

03/07/29 09:21:20 61S0X050_110_0126

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DTC P0139:

YES

11-127

Secondary HO2S (Sensor 2)

Circuit Slow Response

1. Reset the PCM (see page 11-4).

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

no load (in Park or neutral) until the radiator fan
comes on.

3. Check the secondary HO2S (Sensor 2) output

voltage at 3,000 rpm with the scan tool or the HDS.

Replace the secondary HO2S (Sensor 2).

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the secondary HO2S (Sensor 2) and the PCM.

Does the voltage stay within 0.3

0.8 V f or

2 minutes?

03/07/29 09:21:20 61S0X050_110_0127

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DTC P0135

’99-00, ’02-04 Models:

DTC P0141

’99-00, ’02-04 Models:

YES

11-128

PGM-FI System

DTC Troubleshooting (cont’d)

HO2S 4P CONNECTOR

PRIMARY/SECONDARY* HO2S (SENSOR 1/
SENSOR 2*) 4P CONNECTOR

IG1
(BLK/YEL)

PO2S
HTC
(BLK/
WHT)

SO2S
HTC
(BLK/
WHT)*

Primary

HO2S (Sensor 1) Heater Circuit Malfunction

Secondary HO2S(Sensor 2) Heater Circuit
Malfunction

NOTE: Information marked with an asterisk ( ) applies
to DTC P0141.

1. Reset the PCM (see page 11-4).

2. Start the engine.

Go to step 3.

Intermittent failure, system is OK at this time.

Check for poor connections or loose terminals at
the primary HO2S (Sensor 1), the secondary HO2S
(Sensor 2) and the PCM.

3. Turn the ignition switch OFF.

4. Disconnect the HO2S (primary or secondary )

(Sensor 1 or Sensor 2 ) 4P connector.

5. At the HO2S side, measure resistance between

HO2S 4P connector terminals No. 3 and No. 4.

Go to step 6.

Replace the primary HO2S (Sensor 1) or

secondary HO2S (Sensor 2) .

6. Check for continuity between body ground and HO

2S 4P connector terminals No. 3 and No. 4
individually.

Replace the HO2S (primary or secondary )

(Sensor 1 or Sensor 2 ).

Go to step 7.

7. Start the engine.

8. Measure voltage between HO2S 4P connector

terminals No. 3 and No. 4.

Go to step 9.

Go to step 12.

9. Turn the ignition switch OFF.

10. Disconnect PCM connector C (31P) (PCM connector

A, 32P) .

Wire side of
female terminals

Terminal side of
male terminals

Wire side of
female terminals

Terminal side of
male terminals

Wire side of
female terminals

Is DT C P0135 or P0141 indicated?

Is ther e 10

Is ther e continuity?

Is ther e batter y voltage?

03/07/29 09:21:21 61S0X050_110_0128

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YES

11-129

PCM CONNECTORS

PO2SHTC
(BLK/WHT)

C (31P)

A (32P)

PO2SHTC
(BLK/WHT)*

PRIMARY/SECONDARY* HO2S (SENSOR 1/
SENSOR 2*) 4P CONNECTOR

IG1
(BLK/YEL)

PCM CONNECTORS

SO2SHTC
(BLK/WHT)*

C (31P)

PO2SHTC
(BLK/WHT)

A (32P)

PG
(BLK)

B (25P)

11. Check for continuity between PCM connector

terminal C1 (A8) and body ground.

Repair short in the wire between the PCM

(C1, A8 ) and the HO2S (primary or secondary )
(Sensor 1, Sensor 2 ).

Substitute a known-good PCM and recheck

(see page 11-5). If the symptom/indication goes
away, replace the original PCM.

12. Measure voltage between HO2S 4P connector

terminal No. 4 and body ground.

Go to step 13.

Repair open in the wire between the primary

HO2S (Sensor 1), secondary HO2S (Sensor 2) and
No. 6 ECU (PCM) CRUISE CONTROL (15A) fuse.

13. Turn the ignition switch OFF.

14. Reconnect the HO2S (primary or secondary )

(Sensor 1, Sensor 2 ) 4P connector.

15. Disconnect PCM connector C (31P) (PCM connector

A, 32P) .

16. Turn the ignition switch ON (II).

17. Measure voltage between PCM connector

terminals C1 (A8) and B2.

Substitute a known-good PCM and recheck

(see page 11-5). If the symptom/indication goes
away, replace the original PCM.

Repair open in the wire between the PCM

(C1, A8 ) and HO2S (primary or secondary )
(Sensor 1, Sensor 2 ).

Wire side of female terminals

Terminal side of
male terminals

Wire side of
female terminals

Wire side of female terminals

Is ther e continuity?

Is ther e batter y voltage?

03/07/29 09:21:22 61S0X050_110_0129

Content .. 105 106 107 108 ..