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Acura CSX. Manual - part 131

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２１

１１

−

YES

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

Is ther e about 2.34

2.86 k

Is ther e about 2.34

2.86 k

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１２

−

YES

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

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

Is ther e continuity?

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YES

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?

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Content .. 129 130 131 132 ..