Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Acura 3.5RL 1996-2004 Approved srm RL9604S11118A
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Main Menu Table of Contents
Idle Control System
Alternator (ALT) FR Signal
This signals the PCM when the Alternator (ALT) is charging.
PCM CONNECTORS
Inspection of ALT FR Signal.
Check for a short in the wire (ALT
F line):
1. Disconnect the GRN 4P con-
nector from the ALT.
2. Turn the ignition switch ON (II).
3. Measure voltage between PCM
Wire side of female terminals
connector terminals D5 and A26.
Check for a short in the wire (ALT
F line):
1. Turn the ignition switch OFF.
2. Disconnect the negative bat-
NO tery cable from the battery.
Is there about 5 V?
3. Disconnect the PCM connector
D (22P).
YES 4. Check for continuity between
body ground and PCM con-
nector terminal D5.
Check the operation of the ALT:
1. Turn the ignition switch OFF.
2. Reconnect the ALT GRN 4P
connector to the ALT. YES Repair short in the wire between
Is there continuity?
3. Start the engine. Hold the the PCM (D5) and the ALT.
engine at 3,000 rpm with no
NO
load (in Park or neutral) until
the radiator fan comes on,
Substitute a known-good PCM
then let it idle.
and recheck (see page 11-41 for
4. Measure voltage between PCM
immobilizer information). If pre-
connector terminals D5 and A26.
scribed voltage is now available,
replace the original PCM.
Does the voltage decrease when YES
headlights and rear defogger are ALT FR signal is OK.
turned on?
NO
ALT GRN 4P CONNECTOR (C131)
Check for an open in the wire (ALT
F line):
1. Turn the ignition switch OFF.
2. Disconnect the negative bat-
tery cable from the battery.
3. Disconnect the PCM connec-
tor D (22P).
4. Disconnect the GRN 4P con-
nector from the ALT.
5. Connect the ALT 4P connector
Wire side of female terminals
terminal No. 4 to body ground
with a jumper wire.
6. Check for continuity between
body ground and PCM con-
nector terminal D5.
PCM CONNECTOR D (22P)
NO Repair open wire between the
Is there continuity?
PCM (D5) and the ALT.
YES
See the ALT inspection
(see section 4).
Wire side of female terminals
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