Psp Switch Signal Circuit Troubleshooting - Honda 2004 Odyssey Service Manual

Idle Control System

PSP Switch Signal Circuit Troubleshooting

'99-00, '02-04 Models
NOTE: Information marked with an asterisk ( ) applies
to '02-04 models.
1. Turn the ignition switch ON (II).
2. Measure voltage between PCM connector
terminals A26 and B20.
PCM CONNECTORS
A (32P)
PSPSW (GRN)
Wire side of female terminals
Is there less than 1.0 V ?
YES Go to step 3.
NO Go to step 6.
3. Start the engine.
4. Turn the steering wheel to the full lock position.
5. Measure voltage between PCM connector
terminals A26 and B20.
Is there battery voltage?
YES The PSP switch signal is OK.
NO Go to step 13.
6. Turn the ignition switch OFF.
7. Disconnect the PSP switch 2P connector.
8. Turn the ignition switch ON (II).
11-196
B (25P)
LG1 (BRN/BLK)
LG1 (BRN/YEL)*
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 B20.
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 (A26).
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).
PSPSW (GRN)
JUMPER WIRE
GND (BLK)
GND (BLK)