Honda S2000 Service Manual page 378

Pulsed Secondary Air Injection System
DTC Troubleshooting (cont'd)
14. Reconnect the air ou m o electrical current sensor.
15. Disconnect the large air pump relay 2P connector.
16. Turn the ignition switch ON (ll)
17. Measure voltage between large air pump relay 2P
connector terminal No. 1 and body ground.
LARGE AIR PUMP RELAY 2P CONNECTOR
Wire side of female terminals
ls there battery voltage?
YES Go to step 18.
NO- Repair open in the wire between the air pump
electrical current sensor and the air pump relay,I
18. Turn the ignition switch OFF.
19. Do the air pump relay test (see page 11-160).
ls the air pump relay OK?
YES - Go to step 20.
NO Replace the air pump relay. I
20. Turn the ignition switch ON (ll).
1 1 - 1 5 0
21. Connect large air pump relay 2P connector
t e r m i n a l s N o . 1 a n d N o . 2 w i t h a i u m o e r w i r e .
LARGE AIR PUMP RELAY 2P CONNECTOR
(WHT/REDI
IWHT/GRN}
JUMPER WIRE
Wire side ot temale terminals
Does the air pump opetate when the jumper wite is
connected?
YES- Go to step 22.
N O G o t o s t e p 3 1 .
22. Turn the ignition switch OFF.
23. Disconnect the jumper wire from the large air
pump relay 2P connector.
24. Disconnect the small airpump relay 2P connector.
25. Checktor continuity between small air pump relay
2P connector terminal No. 2 and body ground.
SMALL AIR PUMP RELAY 2P CONNECTOR
Wire side o{l lemale termina\s
ls there continuity?
YES Go to step 26.
NO Repair open in the wire between the air pump
r e l a y a n d b o d y g r o u n d . I