Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S11137A
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Main Menu Table of Contents
No. 1 VACUUM HOSE
Troubleshooting Flowchart
VACUUM
PUMP/GAUGE, 0 - 30 in.Hg
Inspection of Fuel Pressure Regu- A973X - 041 - XXXXX
lator Control Solenoid Valve.
Check for vacuum at idle:
1. Start the engine. Hold the
engine at 3,000 rpm with no
load (in Park or neutral) until
the radiator fan comes on.
2. Disconnect the No. 1 vacuum
hose from the fuel pressure
regulator and connect a vac-
uum gauge to the hose.
FUEL
PRESSURE
REGULATOR
NO Disconnect the 4P connector
Is there manifold vacuum?
from the control box.
YES
Check the No. 1 and No. 3 vacu-
NO um hose. If hoses are OK, replace
Is there vacuum?
the fuel pressure regulator con-
trol solenoid valve.
YES
Check the Fuel Pressure Regula-
Inspect for a short to ground in
tor Control Solenoid Valve:
wire between PCM (A10) and the
1. Turn the ignition switch OFF.
4P connector. If the wire is OK,
2. Disconnect the 4P connector
substitute a known-good PCM
from the control box.
and recheck (see page 11-42 for
3. Connect battery positive to
immobilizer information). If symp-
terminal No. 4 and battery
tom goes away, replace the orig-
negative to terminal No. 3 on
inal PCM.
the 4P connector.
4. Start the engine and allow it
to idle.
CONTROL BOX
4P CONNECTOR
YES Terminal side of male
Replace the fuel pressure regula- terminals
Is there manifold vacuum?
tor control solenoid valve.
NO
(To page 11-138)
Main Menu Table of Contents
Fuel Supply System
Fuel Pressure Regulator (cont'd)
(From page 11-137)
CONTROL BOX
4P CONNECTOR (C257)
Check for an open in the wire
(IG1 line): IG1
Measure voltage between the (BLK/YEL)
control box 4P connector termi-
nal No. 4 and body ground.
Repair open in wire between Wire side of female terminals
NO No. 20 ECU (PCM) (20 A) fuse in
Is there battery voltage?
the under-dash fuse/relay box
and the 4P connector.
YES
PCM CONNECTOR A (26P)
Check for an open in the wire
(FPRCS line): FPRCS JUMPER
1. Turn the ignition switch OFF. (RED/ WIRE
2. Reconnect the 4P connector GRN)
to the control box.
3. Start the engine and allow it
to idle.
4. Connect PCM connector ter-
minal A10 and body ground
with a jumper wire.
Wire side of female terminals
YES Repair open in wire between
Is there manifold vacuum?
PCM (A10) and the 4P connector.
NO
Fuel Pressure Regulator Control
Solenoid Valve is OK.
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