Honda Odyssey 2004. Manual — part 122
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*01
*02
01
S0X4AZ1K77100091519FAAT00
DTC P1519
’01 Model:
YES
NO
YES
NO
YES
NO
YES
NO
11-186
Idle Control System
DTC Troubleshooting (cont’d)
IAC VALVE 3P CONNECTOR
IGP (YEL/BLK)
IAC VALVE 3P CONNECTOR
GND (BLK)
PCM CONNECTOR B (24P)
IACV (BLK/BLU)
IAC Valve Circuit
Malfunction
1. Reset the PCM (see page 11-4).
2. Turn the ignition switch ON (II).
Go to step 3.
Intermittent failure, system is OK at this time.
Check for poor connections or loose terminals at
the IAC valve and at the PCM.
3. Turn the ignition switch OFF.
4. Disconnect the IAC valve 3P connector.
5. Turn the ignition switch ON (II).
6. Measure voltage between IAC valve 3P connector
terminal No. 2 and body ground.
Go to step 7.
Repair open in the wire between the IAC valve
and the PGM-FI main relay.
7. Turn the ignition switch OFF.
8. Check for continuity between body ground and IAC
valve 3P connector terminal No. 1.
Go to step 9.
Repair open in the wire between the IAC valve
and G101.
9. Disconnect PCM connector B (24P).
10. Check for continuity between body ground and
PCM connector terminal B23.
Repair short in the wire between the IAC
valve and the PCM (B23).
Go to step 11.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is DT C P1519 indicated?
Is ther e batter y voltage?
Is ther e continuity?
Is ther e continuity?
03/07/29 09:23:05 61S0X050_110_0186
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*03
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03
YES
NO
YES
NO
11-187
IAC VALVE 3P CONNECTOR
JUMPER WIRE
IACV (BLK/RED)
PCM CONNECTOR B (24P)
IACV (BLK/BLU)
PCM CONNECTOR B (24P)
IACV (BLK/BLU)
11. Connect IAC valve 3P connector terminal No. 3 to
body ground with a jumper wire.
12. Check for continuity between PCM connector
terminal B23 and body ground.
Go to step 13.
Repair open in the wire between the IAC valve
and the PCM (B23).
13. Remove the jumper wire from the IAC valve 3P
connector, then reconnect the IAC valve 3P
connector.
14. Turn the ignition switch ON (II).
15. Measure voltage between body ground and PCM
connector terminal B23.
Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM.
Replace the IAC valve.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e batter y voltage?
03/07/29 09:23:06 61S0X050_110_0187
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02
S0X4AZ6A20336112101FAAT00
’99-00, ’02-04 Models
YES
NO
YES
NO
YES
NO
11-188
Idle Control System
A/C Signal Circuit Troubleshooting
PCM CONNECTORS
ACS (BLU/RED)
A (32P)
LG1 (BRN/BLK)
B (25P)
LG1 (BRN/YEL)*
PCM CONNECTORS
JUMPER WIRE
LG1 (BRN/BLK)
B (25P)
ACC (RED)
A (32P)
LG1 (BRN/YEL)*
NOTE: Information marked with an asterisk ( ) applies
to ’02-04 models.
1. Turn the ignition switch OFF.
2. Disconnect the A/C pressure switch 4P connector.
3. Turn the ignition switch ON (II).
4. Measure voltage between PCM connector
terminals A27 and B20.
Go to step 5.
Go to step 12.
5. Turn the ignition switch OFF.
6. Reconnect the A/C pressure switch 4P connector.
7. Turn the ignition switch ON (II).
8. Momentarily connect PCM connector terminals A17
and B20 with a jumper wire several times.
Go to step 9.
Go to step 15.
9. Start the engine.
10. Turn the blower switch ON.
11. Turn the A/C switch ON.
The air conditioning signal is OK.
Go to step 16.
12. Turn the ignition switch OFF.
13. Disconnect PCM connector A (32P).
Wire side of female terminals
Wire side of female terminals
Is ther e about 5 V ?
Is ther e a clicking noise f r om the A/ C compr essor
clutch?
Does the A/ C oper ate?
03/07/29 09:23:07 61S0X050_110_0188
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*01
*02
03
YES
NO
YES
NO
YES
NO
11-189
ACS (BLU/RED)
PCM CONNECTOR A (32P)
UNDER-HOOD FUSE/RELAY BOX
CONNECTOR D (16P)
ACC (RED)
JUMPER WIRE
PCM CONNECTORS
B (25P)
LG1 (BRN/BLK)
ACS (BLU/BLK)
A (32P)
LG1 (BRN/YEL)*
14. Check for continuity between body ground and
PCM connector terminal A27.
Repair short in the wire between the PCM
(A27) and the A/C pressure switch.
Substitute a known-good PCM and recheck
(see page 11-5). If the prescribed voltage is now
available, replace the original PCM. If not, check the
A/C system for other symptoms.
15. Momentarily connect under-hood fuse/relay box
16P connector terminal No. 11 to body ground with
a jumper wire several times.
NOTE: The under-hood fuse/relay box 16P
you unbolt and invert the fuse box, leave the upper
cover on to prevent short circuits.
Repair open in the wire between the PCM
(A17) and the A/C clutch relay.
Check the A/C system for other symptoms.
16. Measure voltage between PCM connector
terminals A27 and B20.
Substitute a known-good PCM and recheck
(see page 11-5). If the symptom/indication goes
away, replace the original PCM. If not, check the
A/C system for other symptoms.
Repair open in the wire between the PCM
(A27) and the A/C pressure switch.
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e a clicking noise f r om the A/ C compr essor
clutch?
Is ther e less than 1.0 V ?
03/07/29 09:23:07 61S0X050_110_0189
connector is on the bottom of the fuse box. When
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