Control Unit Input Test - Acura 3.5 RL Manual

Control Unit Input Test

1. Remove the dashboard lower cover (see
2. Disconnect the 8P connector "A" from the immobilizer
control unit.
3. Inspect the connector and socket terminals to be
sure they are all making good contact.
• If the terminals are bent, loose, or corroded, repair
them as necessary, and recheck the system.
• If the terminals look OK, make the following
input tests at the connector.
If any test indicates a problem, find and
correct the cause, then recheck the system.
If all the input tests prove OK, check the immo-
bilizer receiver and transponder.
Cavity Wire Test condition
Under all conditions
YEL/BLK
Shift lever in
GRY
Ignition switch at
WHT/RED
START (III)
Ignition switch ON (II)
YEL/BLK
Under all conditions
PNK
Under all conditions
WHT
Under all conditions
BLK
*: Use the backprobing method explained in
IMMOBILIZER CONTROL UNIT
section 20).
Wire side of
female terminals
Test: Desired results
Check for voltage to ground:
There should be battery voltage.
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Attach to ground:
The immobilizer indicator light
should come on.
*Check for continuity between the
A6 terminal and PCM 12P
connector No. 11 terminal.
There should be continuity.
Check for continuity to ground:
There should be continuity.
section 11.
CONNECTOR "A"
Possible cause if result is not obtained
• Blown No. 6 (20 A) fuse in the
under-dash fuse/relay box.
• An open in the wire
• Faulty transmission range switch
• An open in the wire
• Faulty starter cut relay
• An open in the wire
• Blown No. 6 (20 A) fuse in the
under-dash fuse/relay box
• Blown No. 25 (30 A) fuse in the
under-dash fuse/relay box
• Faulty PGM-FI main relay
• An open in the wire
• Poor ground (G101)
• Blown No. 56 (7.5 A) fuse in the
under-hood fuse/relay box
• Blown bulb
• Faulty gauge circuit
• An open in the wire
• An open in the wire
• Poor ground (G401, G402 or G251)
• An open in the wire