Psp Switch Signal Circuit Troubleshooting - Honda 2002 Accord Manual

Idle Control System
PSP Switch Signal Circuit Troubleshooting
1. Turn the ignition switch ON (II).
2. Measure voltage between ECM/PCM connector
terminals A26 and B20.
E C M / P C M C O N N E C T O R S
/
2 3
4
5
6
/
8 9 10
12 13 14 15
/
17 18 19 20 21
/
23 24
25 26 27 28 29 30
/
32
P S P S W ( G R N )
B
(25P)
1 2 3 4
5
7
8
9 10 11 12 13 14 16 17 18
19 20
21 22 23 24 25
J L G 1 ( B R N / B L K )
W i r e s i d e o f f e m a l e t e r m i n a l s
Is there less than 1.0 V?
Y E S - G o to step 3.
N O - G o t o step 6.
3. Start the engine.
4. Turn the steering wheel to full lock position.
5. Measure voltage between ECM/PCM connector
terminals A26 and B20.
Is there battery voltage?
Y E S - T h e PSP switch signal is O K . B
N O - G o t o step 11.
6. Turn the ignition switch OFF.
7. Disconnect the PSP switch 2P connector.
8. Turn the ignition switch ON (II).
9. At the harness side, connect PSP switch 2P
connector terminals No. 1 and No. 2 with a jumper
wire.
P S P S W I T C H 2 P C O N N E C T O R
P S P S W ( G R N )
J U M P E R W I R E
G N D ( B L K )
W i r e s i d e o f f e m a l e t e r m i n a l s
10. Measure voltage between ECM/PCM connector
terminals A26 and B20.
Is there less than 1.0 V?
Y E S - R e p l a c e the PSP switch. •
N O - C h e c k for an open in the wire between the
ECM/PCM (A26) and the PSP switch, or an open in
wire between the PSP switch and G302.B
11. Turn the ignition switch OFF.
12. Disconnect the PSP switch 2P connector.
13. Turn the ignition switch ON (II).
11-108