Honda 2004 Odyssey Service Manual page 507

Idle Control System
PSP Switch Signal Circuit Troubleshooting (cont'd)
9. At the harness side, connect PSP switch 2P
connector terminals No. 1 and No. 2 with a jumper
wire.
PSP SWITCH 2P CONNECTOR
Wire side of female terminals
10. Measure voltage between PCM connector
terminals A26 and E20.
Is there less than 1.0 V ?
YES Replace the PSP switch.
NO Go to step 11.
11. Turn the ignition switch OFF.
12. Check for continuity between PSP switch 2P
connector No. 2 terminal and body ground.
PSP SWITCH 2P CONNECTOR
Wire side of female terminals
Is there continuity?
YES Repair open in the wire between the PSP
switch and PCM (E20).
NO Repair open in the wire between the PSP
switch and G201.
13. Turn the ignition switch OFF.
14. Disconnect the PSP switch 2P connector.
15. Turn the ignition switch ON (II).
11-198
PSPSW (GRN)
JUMPER WIRE
GND (BLK)
GND (BLK)
16. Measure voltage between PCM connector
terminals A26 and E20.
PCM CONNECTORS
A (31P)
LG1 (BRN/BLK)
E (31P)
Wire side of female terminals
Is there battery voltage?
YES Replace the PSP switch.
NO Go to step 17.
17. Turn the ignition switch OFF.
18. Disconnect PCM connector E (31P).
19. Check for continuity between body ground and
PCM connector terminal E20.
PCM CONNECTOR E (31P)
Wire side of female terminals
Is there continuity?
YES Repair short in the wire between the PCM
(E20) and the PSP switch.
NO Substitute a known-good PCM and recheck
(see page 11-5). If voltage is normal, replace the
original PCM.
PSPSW(GRN)
PSPSW (GRN)