S2000 L4-2.2L (2004)
Is the fuse OK?
YES - Go to step 9.
NO - Check for these problems.
-
A short in the wire between the ACGS (15 A) fuse and the PGM-FI main relay.
-
A short in the wire between the PGM-FI main relay and the ECM, injectors, or IAC valve.
9. Inspect the No. 2 FUEL PUMP SRS (15 A) fuse in the under-dash fuse/relay box.
Is the fuse OK?
YES - Go to step 10.
NO - Check for these problems.
-
A short in the wire between the No. 2 FUEL PUMP SRS (15 A) fuse and the PGM-FI main relay or the SRS unit.
-
A short in the wire between the PGM-FI main relay and the fuel pump.
-
A faulty PGM-FI main relay or faulty fuel pump.
10. Disconnect ECM connector C (31P).
11. Check for continuity between body ground and ECM connector terminals C19and C28 individually.
Is there continuity?
YES - Go to step 12.
NO - Go to step 13.
12. Disconnect the 3P connector from each of these sensors, one at a time, and check for continuity between body ground and ECM connector
terminal C19 and C28 individually.
-
MAP sensor
-
Vehicle speed sensor (VSS)
-
Fuel tank pressure (FTP) sensor
-
TP sensor
-
Air pump electrical current sensor
Is there continuity?
YES - Repair short to body ground in the wire between the ECM (C19) and the MAP sensor, or the ECM (C28) and the TP sensor, VSS, FTP
sensor or air pump electrical current sensor.
NO - Replace the sensor that made continuity to body ground go away when disconnected.
13. Disconnect the injectors and IAC valve connectors.
14. Turn the ignition switch ON (II).
