Acura CSX. Manual — part 300
*01
01
02
SNR9AA1E10436455201FAAT10
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−
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YES
NO
YES
NO
YES
NO
14-280
A/T Interlock System
Shift Lock System Circuit Troubleshooting
A
SHIFT LOCK SOLENOID CONNECTOR
IG1 (YEL)
SHIFT LOCK SOLENOID CONNECTOR
IG1 (YEL)
SLS (PNK)
1. Connect the HDS to the DLC located under the
driver’s side of the dashboard.
2. Turn the ignition switch to ON (II). Make sure the
HDS communicates with the PCM. If it does not, go
to the DLC circuit troubleshooting (see page
11-204).
3. Select Shift Lock Solenoid Test in the
Miscellaneous Test Menu, and check that the shift
lock solenoid operates with the HDS.
Go to step 16.
Go to step 5.
4. Turn the ignition switch to LOCK (0).
5. Remove the center console (see page 20-92).
6. Disconnect the shift lock solenoid connector.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between shift lock solenoid
connector terminal No. 1 and body ground.
Go to step 9.
Check for a blown No. 10 (7.5 A) fuse in the
under-dash fuse/relay box. If the fuse is OK, repair
open in the wire between the shift lock solenoid
connector and the under-dash fuse/relay box.
9. Shift the shift lever to P, and press the brake pedal.
Do not press the accelerator.
10. Measure the voltage between shift lock solenoid
connector terminals No. 1 and No. 2 while pressing
the brake pedal.
Go to step 11.
Go to step 12.
Wire side of female terminals
Wire side of female terminals
Does the shif t lock solenoid wor k pr oper ly?
Is ther e about batter y voltage?
Is ther e batter y voltage?
08/08/21 14:50:06 61SNR030_140_0282
03
04
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−
−
−
YES
NO
YES
NO
14-281
SHIFT LOCK SOLENOID CONNECTOR
IG1 (YEL)
SLS (PNK)
SLS (PNK)
PCM CONNECTOR A (44P)
SHIFT LOCK
SOLENOID
CONNECTOR
SLS (PNK)
11. Release the brake pedal, and measure the voltage
between shift lock solenoid connector terminals
No. 1 and No. 2. The shift lever must be in P.
Repair short to body ground in the wire
between PCM connector terminal A27 and the shift
lock solenoid.
Check the shift lock mechanism. If the
mechanism is OK, replace the shift lock solenoid
(see page 14-287).
12. Turn the ignition switch to LOCK (0).
13. Jump the SCS line with the HDS.
14. Disconnect PCM connector A (44P).
15. Check for continuity between PCM connector
terminal A27 and shift lock solenoid connector
terminal No. 2.
Check for poor connections or loose
terminals between shift lock solenoid connector
terminal No. 2 and PCM connector terminal A27. If
the connection is OK, update the PCM if it does not
have the latest software (see page 11-227), or
substitute a known-good PCM (see page 11-7), then
recheck. If the symptom goes away with a known-
good PCM, replace the original PCM (see page
11-228).
Repair open in the wire between PCM
connector terminal A27 and the shift lock solenoid
connector.
Wire side of female terminals
Wire side of
female terminals
Terminal side of
female terminals
Is ther e about batter y voltage?
Is ther e continuity?
08/08/21 14:50:07 61SNR030_140_0283
*02
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−
−
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YES
NO
YES
NO
YES
NO
14-282
A/T Interlock System
BKSW (LT GRN)
PCM CONNECTOR A (44P)
16. Monitor the Brake Switch in the Data List with the
HDS, and press the brake pedal.
Go to step 21.
If the brake lights come on, go to step 17. If
the brake lights do not work, repair the faulty brake
light circuit.
17. Turn the ignition switch to LOCK (0).
18. Jump the SCS line with the HDS.
19. Disconnect PCM connector A (44P).
20. Measure the voltage between PCM connector
terminal A40 and body ground when pressing the
brake pedal and when the brake pedal is released.
Reconnect all connectors, then update the
PCM if it does not have the latest software
(see page 11-227), or substitute a known-good PCM
(see page 11-7), then recheck. If the symptom goes
away with a known-good PCM, replace the original
PCM (see page 11-228).
Repair open in the wire between PCM
connector terminal A40 and the brake pedal
position switch.
21. Monitor the A/T P Switch in the Data List with the
HDS with the shift lever in P.
Go to step 33.
Go to step 22.
Terminal side of female terminals
Is the Br ake Switch ON?
Is ther e about batter y voltage when pr essing the
br ake pedal, and no voltage when the pedal is
r eleased?
Is the A/ T P Switch ON?
08/08/21 14:50:07 61SNR030_140_0284
*03
*04
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−
−
−
−
−
YES
NO
YES
NO
YES
NO
14-283
TRANSMISSION RANGE
SWITCH CONNECTOR
ATPP (BLK/BLU)
GND (BLK)
PCM CONNECTOR B (44P)
ATPP (BLU/BLK)
22. Turn the ignition switch to LOCK (0).
23. Disconnect the transmission range switch
connector.
24. Turn the ignition switch to ON (II).
25. Measure the voltage between transmission range
switch connector terminals No. 6 and No. 10.
Go to step 26.
Go to step 27.
26. Inspect the transmission range switch (see page
14-265).
Check for poor connections or loose
terminals at the transmission range switch
connector.
Replace the transmission range switch
(see page 14-267).
27. Turn the ignition switch to LOCK (0).
28. Jump the SCS line with the HDS.
29. Disconnect PCM connector B (44P).
30. Check for continuity between PCM connector
terminal B13 and body ground.
Repair short to body ground in the wire
between PCM connector terminal B13 and the
transmission range switch connector.
Go to step 31.
Wire side of female terminals
Terminal side of female terminals
Is ther e mor e than 5 V ?
Is the switch OK ?
Is ther e continuity?
08/08/21 14:50:07 61SNR030_140_0285
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