Acura 3.5 RL Manual page 437

Troubleshooting Flowchart
Engine will not start.
Inspection of PGM-FI main
relay and relay harness.
Check for an open in the wire (PG1
line):
1. Turn the ignition switch OFF.
2. Disconnect the PGM-FI main
relay 4P connector and 8P
connector.
3. Check for continuity between
the PGM-FI main relay 8P
connector terminal No. 7 and
body ground.
Is there continuity?
YES
Check for an open or short in the
wire (BAT line):
Measure voltage between the
PGM-FI main relay 4P connector
terminal No. 3 and body ground.
Is there battery voltage?
YES
Check for an open or short in the
wire (IGSW line):
1. Turn the ignition switch ON (II).
2. Measure voltage between the
PGM-FI main relay 8P connec-
tor terminal No. 5 and body
ground.
Is there battery voltage?
YES
(To page 11-148)
Repair open in the wire between
NO
the PGM-FI main relay and G101
(located at middle of engine).
Repair open or short in the
wire between the PGM-FI
main relay and the No. 6 ECU
NO
(PCM) (20 A) fuse.
Replace the No. 6 ECU (PCM)
(20 A) fuse in the under-dash
fuse/relay box.
Repair open or short in the
wire between the PGM-FI
main relay and the No. 22
NO
FUEL PUMP (20 A) fuse.
Replace the No. 22 FUEL PUMP
(20 A) fuse in the under-dash
fuse box.
PGM-FI MAIN RELAY 8P CONNECTOR (C433)
Wire side of female terminals
PGM-FI MAIN RELAY 4P CONNECTOR (C432)
Wire side of female terminals