Immobilizer Receiver And - Acura 3.5 RL Manual

Immobilizer System
Immobilizer Receiver and Transponder (Key) Test
1. Turn the ignition switch ON (II).
2. Check that the immobilizer
indicator light starts blinking
after two seconds.
Does the immobilizer indi-
cator blink?
YES
Try to start the engine with another
master key or valet key from this
vehicle.
Does the engine start?
NO
Does the engine crank?
NO
Rewrite the immobilizer control
unit and the PCM with the PGM
Tester.
Does the engine start?
NO
1. Turn the ignition switch OFF.
2. Disconnect the 3P connector
"B" from the immobilizer con-
trol unit.
3. Check for continuity between
the B1 and B2, and the B3 and
B2 terminals of the 3P connec-
tor.
Is there continuity?
NO
Measure resistance between the
B1 and B3 terminals of the 3P con-
nector.
Is there about 15 ohms?
YES
Replace the immobilizer control
unit.
NO
Perform the control unit input
test.
YES
Replace the transponder (igni-
tion key).
Check for an open in the WHT
wire between the immobilizer
YES
control unit and the PCM. If the
wire is OK, rewrite the PCM with
the PGM Tester.
YES
Immobilizer system is OK now.
Short in the shielded wires
YES
between the immobilizer receiver
and the immobilizer control unit.
Replace the wire harness.
Faulty receiver or open in the
NO
shielded wires between the immo-
bilizer receiver and immobilizer
control unit.
IMMOBILIZER
CONTROL
UNIT
3P CONNECTOR
Wire side of
female terminals