Acura CSX. Manual — part 131
−
−
21
11
−
−
−
−
YES
NO
YES
NO
11-198
PGM-FI System
ECM/PCM CONNECTOR A (44P)
CANL (RED)
CANH (WHT)
ECM/PCM CONNECTOR A (44P)
CANL (RED)
CANH (WHT)
34. Measure the resistance between ECM/PCM
connector terminals A36 and A37.
Go to step 35.
Substitute a known-good SRS unit (see page
24-203). If the HDS identifies the vehicle, replace
the original SRS unit (see page 24-203).
35. Disconnect SRS unit connector A (28P).
36. Reconnect EPS control unit connector D (28P).
37. Measure the resistance between ECM/PCM
connector terminals A36 and A37.
• With TPMS: Go to step 38.
• Without TPMS: Update the ECM/PCM if it does
not have the latest software (see page 11-227), or
substitute a known-good ECM/PCM (see page
11-7), then recheck. If the symptom/indication
goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-228).
Substitute a known-good EPS control unit
(see page 17-84). If the HDS identifies the vehicle,
replace the original EPS control unit (see page
17-84).
Terminal side of female terminals
Terminal side of female terminals
Is ther e about 2.34
2.86 k
?
Is ther e about 2.34
2.86 k
?
08/08/21 14:21:52 61SNR030_110_0198
−
12
−
−
YES
NO
11-199
ECM/PCM CONNECTOR A (44P)
CANL (RED)
CANH (WHT)
38. Disconnect EPS control unit connector D (28P).
39. Reconnect the TPMS control unit 20P connector.
40. Measure the resistance between ECM/PCM
connector terminals A36 and A37.
Update the ECM/PCM if it does not have the
latest software (see page 11-227), or substitute a
known-good ECM/PCM (see page 11-7), then
recheck. If the symptom/indication goes away with
a known-good ECM/PCM, replace the original ECM/
PCM (see page 11-228).
Substitute a known-good TPMS control unit
(see page 18-75). If the HDS identifies the vehicle,
replace the original TPMS control unit (see page
18-75).
41. Disconnect the gauge control module (tach) 36P
connector (see page 22-277).
42. Disconnect the ABS modulator-control unit 25P
connector (see page 19-90) (or the VSA modulator-
control unit 37P connector (see page 19-171) and
the yaw rate-lateral acceleration sensor 5P
connector (see page 19-169)).
43. Disconnect SRS unit connector A (28P) (see page
24-203).
44. Disconnect EPS control unit connector D (28P)
(see page 17-84).
45. With TPMS: Disconnect the TPMS control unit 20P
connector (see page 18-75).
Terminal side of female terminals
Is ther e about 2.34
2.86 k
?
08/08/21 14:21:53 61SNR030_110_0199
*02
24
−
−
−
−
YES
NO
YES
NO
11-200
PGM-FI System
ECM/PCM CONNECTOR A (44P)
CANH (WHT)
ECM/PCM CONNECTOR A (44P)
CANL (RED)
46. Check for continuity between ECM/PCM connector
terminal A36 and body ground.
Repair short in the wire between the ECM/
PCM connector terminal A36 and the gauge control
module (tach), the ABS modulator-control unit, the
VSA modulator-control unit, the yaw rate-lateral
acceleration sensor, the SRS unit, the EPS control
unit, the TPMS control unit (with TPMS), or the
DLC.
Go to step 47.
47. Check for continuity between ECM/PCM connector
terminal A37 and body ground.
Repair short in the wire between ECM/PCM
connector terminal A37 and the gauge control
module (tach), the ABS modulator-control unit, the
VSA modulator-control unit, the yaw rate-lateral
acceleration sensor, the SRS unit, the EPS control
unit, the TPMS control unit (with TPMS), or the
DLC.
Go to step 48.
Terminal side of female terminals
Terminal side of female terminals
Is ther e continuity?
Is ther e continuity?
08/08/21 14:21:53 61SNR030_110_0200
−
−
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
YES
NO
11-201
48. Reconnect all connectors.
49. Connect the HDS to the DLC (see page 11-3).
50. Disconnect the gauge control module (tach) 36P
connector.
51. Turn the ignition switch to ON (II), and read the
HDS.
Replace the gauge control module (tach)
(see page 22-277).
• With ABS: Go to step 52.
• With VSA system: Go to step 56.
52. Turn the ignition switch to LOCK (0).
53. Reconnect the gauge control module (tach) 36P
connector.
54. Disconnect the ABS modulator-control unit 25P
connector.
55. Turn the ignition switch to ON (II), and read the
HDS.
Replace the ABS modulator-control unit
(see page 19-90).
Go to step 64.
56. Turn the ignition switch to LOCK (0).
57. Reconnect the gauge control module (tach) 36P
connector.
58. Disconnect the VSA modulator-control unit 37P
connector.
59. Turn the ignition switch to ON (II), and read the
HDS.
Replace the VSA modulator-control unit
(see page 19-171).
Go to step 60.
60. Turn the ignition switch to LOCK (0).
61. Reconnect the VSA modulator-control unit 37P
connector.
62. Disconnect the yaw rate-lateral acceleration sensor
5P connector.
63. Turn the ignition switch to ON (II), and read the
HDS.
Replace the yaw rate-lateral acceleration
sensor (see page 19-169).
Go to step 64.
Does the HDS identif y the vehicle?
Does the HDS identif y the vehicle?
Does the HDS identif y the vehicle?
Does the HDS identif y the vehicle?
08/08/21 14:21:53 61SNR030_110_0201
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