Honda Odyssey 2004. Manual — part 105
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*01
S0X4AZ6K77100090131FAAT00
DTC P0131
’99-00, ’02-04 Models:
YES
NO
YES
NO
YES
NO
YES
NO
11-118
PGM-FI System
DTC Troubleshooting (cont’d)
PRIMARY HO2S (SENSOR 1)
4P CONNECTOR
PHO2S (WHT)
Primary
HO2S (Sensor 1) Circuit Low 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 primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS during acceleration
using wide open throttle.
Go to step 4.
Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the primary HO2S (Sensor 1) and the PCM.
4. Check the fuel pressure (see page 11-216).
Go to step 5.
Repair the fuel supply system.
5. Turn the ignition switch OFF.
6. Disconnect the primary HO2S (Sensor 1) 4P
connector.
7. Turn the ignition switch ON (II).
8. Check the primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS.
Go to step 9.
Replace the primary HO2S (Sensor 1).
9. Turn the ignition switch OFF.
10. Disconnect PCM connector C (31P).
11. Check for continuity between primary HO2S
(Sensor 1) 4P connector terminal No. 1 and body
ground.
Repair short in the wire between the PCM
(C16) and the primary HO2S (Sensor 1).
Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
Wire side of female terminals
Does the voltage stay at 0.5 V or less?
Is it nor mal?
Does the voltage stay at 0.5 V or less?
Is ther e continuity?
03/07/29 09:21:17 61S0X050_110_0118
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*01
S0X4AZ1K77100090131FAAT00
DTC P0131
’01 Model:
YES
NO
YES
NO
YES
NO
YES
NO
11-119
PRIMARY HO2S (SENSOR 1)
4P CONNECTOR
PHO2S (WHT)
Primary HO2S
(Sensor 1) Circuit Low 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 primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS during acceleration
using wide open throttle.
Go to step 4.
Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the primary HO2S (Sensor 1) and the PCM.
4. Check the fuel pressure (see page 11-216).
Go to step 5.
Repair the fuel supply system.
5. Turn the ignition switch OFF.
6. Disconnect the primary HO2S (Sensor 1) 4P
connector.
7. Turn the ignition switch ON (II).
8. Check the primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS.
Go to step 9.
Replace the primary HO2S (Sensor 1).
9. Turn the ignition switch OFF.
10. Disconnect PCM connector A (31P).
11. Check for continuity between primary HO2S
(Sensor 1) 4P connector terminal No. 1 and body
ground.
Repair short in the wire between the PCM
(A6) and the primary HO2S (Sensor 1).
Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
Wire side of female terminals
Does the voltage stay at 0.5 V or less?
Is it nor mal?
Does the voltage stay at 0.5 V or less?
Is ther e continuity?
03/07/29 09:21:17 61S0X050_110_0119
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01
02
S0X4AZ6K77100090132FAAT00
DTC P0132
’99-00, ’02-04 Models:
YES
NO
YES
NO
YES
NO
11-120
PGM-FI System
DTC Troubleshooting (cont’d)
PHO2S (WHT)
SG2 (GRN/BLK)
PRIMARY HO2S (SENSOR 1)
4P CONNECTOR
JUMPER WIRE
SG2 (GRN/YEL)*
PCM CONNECTOR C (31P)
PHO2S (WHT)
SG2 (GRN/BLK)
SG2 (GRN/YEL)*
JUMPER WIRE
Primary
HO2S (Sensor 1) Circuit High Voltage
NOTE: Information marked with an asterisk ( ) applies
to ’02-04 models.
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 primary HO2S (Sensor 1) output voltage
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 primary HO2S (Sensor 1) and the PCM.
4. Turn the ignition switch OFF.
5. Disconnect the primary HO2S (Sensor 1) 4P
connector.
6. Connect primary HO2S (Sensor 1) 4P connector
terminals No. 1 and No. 2 with a jumper wire.
7. Turn the ignition switch ON (II).
8. Check the primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS.
Go to step 9.
Replace the primary HO2S (Sensor 1).
9. Turn the ignition switch OFF.
10. Connect PCM connector terminals C16 and C18
with a jumper wire.
11. Turn the ignition switch ON (II).
12. Check the primary HO2S (Sensor 1) 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
(C16, C18) and the primary HO2S (Sensor 1).
Wire side of female 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?
Is ther e 1.0 V or mor e?
03/07/29 09:21:18 61S0X050_110_0120
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*01
01
S0X4AZ1K77100090132FAAT00
DTC P0132
’01 Model:
YES
NO
YES
NO
YES
NO
11-121
PHO2S (WHT)
SG2 (GRN/BLK)
PRIMARY HO2S (SENSOR 1)
4P CONNECTOR
JUMPER WIRE
PCM CONNECTOR A (31P)
JUMPER WIRE
SG2 (GRN/BLK)
PHO2S (WHT)
Primary HO2S
(Sensor 1) 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 primary HO2S (Sensor 1) output voltage
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 primary HO2S (Sensor 1) and the PCM.
4. Turn the ignition switch OFF.
5. Disconnect the primary HO2S (Sensor 1) 4P
connector.
6. Connect primary HO2S (Sensor 1) 4P connector
terminals No. 1 and No. 2 with a jumper wire.
7. Turn the ignition switch ON (II).
8. Check the primary HO2S (Sensor 1) output voltage
with the scan tool or the HDS.
Go to step 9.
Replace the primary HO2S (Sensor 1).
9. Turn the ignition switch OFF.
10. Connect PCM connector terminals A6 and A28 with
a jumper wire.
11. Turn the ignition switch ON (II).
12. Check the primary HO2S (Sensor 1) 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
(A6, A28) and the primary HO2S (Sensor 1).
Wire side of female 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?
Is ther e 1.0 V or mor e?
03/07/29 09:21:18 61S0X050_110_0121
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