Acura RSX Honda Integra. Manual — part 459
01
*01
S6M6A00J46636200000CAAT00
22-176
Immobilizer System
System Description
IMMOBILIZER CONTROL UNIT-RECEIVER
ECM/PCM
IGNITION KEY
(Has built-in transponder)
KEY CYLINDER
FUEL SUPPLY
SYSTEM
IMMOBILIZER INDICATOR BLINKING PATTERN:
IGNITION SWITCH
PROPER KEY
INSERTED
WRONG KEY
INSERTED
INDICATOR
INDICATOR
ON (II)
OFF
ON
OFF
2 sec.
OFF
ON
5 sec.
1 Hz
1 Hz
The vehicle is equipped with an immobilizer system that will disable the vehicle unless the proper ignition key is used.
This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator,
and the ECM/PCM.
When the key is inserted in the ignition switch and turned to the ON (II) position, the immobilizer control unit-receiver
sends power to the transponder in the ignition key. The transponder then sends a coded signal back to the immobilizer
control unit-receiver which then sends a coded signal to the ECM/PCM.
• If the proper key has been used, the immobilizer indicator will come on for about 2 seconds, then go off.
• If the wrong key has been used or the code was not received or recognized by the unit, the indicator will come on for
about 2 seconds, then it will blink until the ignition switch is turned OFF.
• If the ignition switch is turned OFF, the indicator will blink for about 5 seconds to signal that the unit has reset
correctly, then the indicator will go off.
• If the customer has lost his key, and cannot start the engine, contact Acura Customer Relations.
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*01
S6M6A00J46636200000EAAT00
22-177
Circuit Diagram
BATTERY
No. 19 (100 A)
No. 9 (7.5 A)
WHT/RED
GRN/YEL
YEL/BLU
BLU/ORN
KEY
IMMOBILIZER CONTROL UNIT-RECEIVER
RED/YEL
1
2
3
6
BRN/YEL
RED/BLU
YEL/BLK
YEL/BLK
ECM/PCM
BRN/YEL
G101
BRN/YEL
BLK
G501
IMOFLR
IGP1
IGP2
MAIN RLY
LG3
LG1
WHT/RED
LG2
BRN/YEL
E1
A2
A3
E7
E3
E27
E9
A23
A24
WHT/BLK
WHT/BLK
WHT/BLK
YEL/BLK
YEL/BLK
5
7
WHT/RED
BLK/YEL
YEL/BLK
IMOCD
4
GRY
GRN/ORN
YEL/BLK
GAUGE ASSEMBLY
YEL/BLK
IG1
5
4
No. 17
(15 A)
BAT
IG1
BLK/YEL
BLK/YEL
BLK/YEL
WHT
RED/YEL
No. 6
(20 A)
No. 32
(15 A)
WHT/BLK
*3
*2
No. 20*
IG1 HOT in ON (II)
and START (III)
IGNITION
SWITCH
PGM-FI
MAIN
RELAY 1
UNDER-DASH
FUSE/RELAY
BOX
IMMOBILIZER
INDICATOR
(LED)
PGM-FI
MAIN
RELAY 2
DATA
LINK
CONNECTOR
(DLC)
• PARKING
BRAKE
SWITCH
• BRAKE
FLUID
LEVEL
SWITCH
FUEL
PUMP
(FP)
UNDER-HOOD
FUSE/RELAY BOX
AUXILIARY
UNDER-DASH
FUSE/RELAY
BOX
No. 6
(15 A)
No. 20 (40 A) : USA
No. 20 (50 A) : Canada
*1
*2: ’02-04 models
*3: ’05-06 models
1
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01
S6M6A00J46636200000FAAT00
−
−
−
−
−
−
−
−
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
22-178
Immobilizer System
Troubleshooting
IMMOBILIZER CONTROL-UNIT
RECEIVER 7P CONNECTOR
BLU/ORN
1. Turn the ignition switch ON (II) with a programmed
key.
2. Check to see if the immobilizer indicator comes on.
Go to step 3.
Go to step 12.
3. Check the immobilizer indicator operation.
Go to step 4.
Go to step 6.
4. Try to crank the engine.
Go to step 5.
Check the starter motor.
5. Try to start the engine.
If available, check the Status Log in the
Immobilizer info with the HDS (see page 22-183). If
the Status Log is not available, the Immobilizer
system is OK at this time.
Go to step 29.
6. Check to see if the immobilizer indicator comes on
and blinks.
Go to step 24.
Go to step 7.
7. Disconnect the 7P connector from the immobilizer
control unit-receiver.
8. Check to see if the immobilizer indicator goes off.
Substitute a known-good immobilizer control
unit-receiver and/or ECM/PCM.
Go to step 9.
9. Turn the ignition switch OFF.
10. Remove the gauge assembly and disconnect its
22P (20P ) connector (see page 22-74)
: ’05-06 models
11. Check for continuity between the immobilizer
control unit-receiver 7P connector No. 5 (IMOARM)
terminal and body ground.
Repair a short in the wire.
Faulty immobilizer indicator, replace the
gauge assembly.
Wire side of female terminals
Does the indicator come on?
Does the indicator come on f or 2 seconds, then go
of f ?
Does the star ter motor oper ate?
Does the engine star t?
Does the indicator blink?
Does the indicator go of f ?
Is ther e continuity?
05/06/27 18:05:36 61S6M040_220_0179
+
02
03
04
−
−
−
−
−
−
YES
NO
YES
NO
’02-04 models
’05-06 models
YES
NO
22-179
IMMOBILIZER CONTROL-UNIT
RECEIVER 7P CONNECTOR
WHT/RED
IMMOBILIZER CONTROL-UNIT
RECEIVER 7P CONNECTOR
GAUGE ASSEMBLY 22P CONNECTOR
BLU/ORN
BLU/ORN
IMMOBILIZER CONTROL-UNIT
RECEIVER 7P CONNECTOR
GAUGE CONTROL MODULE 20P CONNECTOR
BLU/ORN
BLU/ORN
12. Try to start the engine.
Go to step 13.
Go to step 18.
13. Turn the ignition switch OFF.
14. Disconnect the 7P connector from the immobilizer
control unit-receiver.
15. Check for voltage between the immobilizer control
unit-receiver 7P connector No. 7 (
B) terminal and
body ground.
Go to step 16.
Faulty No. 9 (7.5 A) fuse in the under-hood
fuse/relay box. If the fuse is OK, check for an open
in the wire between the immobilizer control unit-
receiver and under-hood fuse/relay box.
16. Remove the gauge assembly, and disconnect its
22P (20P ) connector (see page 22-74).
: ’05-06 models
17. Check for continuity between the immobilizer
control unit-receiver 7P connector No. 5 (IMOARM)
terminal and gauge assembly 22P (20P ) connector
No. 10 (No. 9 ) terminal.
: ’05-06 models
Faulty immobilizer indicator, replace the
gauge assembly.
Repair an open in the wire.
(cont’d)
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Wire side of female terminals
Does the engine star t?
Is ther e batter y voltage?
Is ther e continuity?
05/06/27 18:05:36 61S6M040_220_0180
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