Content .. 135 136 137 138 ..

Acura RSX Honda Integra. Manual - part 137

＊０１

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＋

−

YES

11-254

PGM-FI System

MIL Circuit Troubleshooting (cont’d)

PGM-FI MAIN RELAY 1
(FI MAIN)
4P CONNECTOR

(WHT/
BLK)

PGM-FI MAIN RELAY 1
(FI MAIN)
4P CONNECTOR

ECM/PCM CONNECTOR
E (31P)

MRLY
(RED/
YEL)

MRLY (RED/YEL)

40. Measure voltage between PGM-FI main relay 1

(FI MAIN) 4P connector terminal No. 4 and body
ground.

Go to step 41.

Repair open in the wire between the No. 6

ECU (ECM/PCM) (15 A) fuse and PGM-FI main
relay 1 (FI MAIN).

41. Check for continuity between PGM-FI main relay 1

(FI MAIN) 4P connector terminal No. 3 and ECM/
PCM connector terminal E7.

Test PGM-FI main relay 1 (FI MAIN)

(see page 22-62). If the relay is OK, update the ECM/
PCM if it does not have the latest software, or
substitute a known-good ECM/PCM (see page 11-6),
then recheck. If the symptom/indication goes away
with a known-good ECM/PCM, replace the original
ECM/PCM (see page 11-284).

Repair open in the wire between PGM-FI main

relay 1 (FI MAIN) and the ECM/PCM (E7).

Wire side of female terminals

Wire side of
female terminals

Is ther e batter y voltage?

Is ther e continuity?

05/06/27 17:38:35 61S6M040_110_0254

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＋

−

YES

11-255

ECM/PCM CONNECTOR A (31P)

IGP1
(YEL/BLK)

IGP2
(YEL/BLK)

PGM-FI MAIN RELAY 1
(FI MAIN)
4P CONNECTOR

(WHT/BLK)

PGM-FI MAIN RELAY 1 (FI MAIN)
4P CONNECTOR

ECM/PCM CONNECTOR
E (31P)

IGP1 (YEL/BLK)

IGP2 (YEL/BLK)

42. Reconnect ECM/PCM connector E (31P).

43. Turn the ignition switch ON (II).

44. Measure voltage between body ground and ECM/

PCM connector terminals A2 and A3 individually.

Go to step 51.

Go to step 45.

45. Turn the ignition switch OFF.

46. Remove PGM-FI main relay 1 (FI MAIN) (A).

47. Turn the ignition switch ON (II).

48. Measure voltage between PGM-FI main relay 1

(FI MAIN) 4P connector terminal No. 2 and body
ground.

Go to step 49.

Repair open in the wire between the No. 6

ECU (ECM/PCM) (15 A) fuse and PGM-FI main
relay 1 (FI MAIN).

49. Turn the ignition switch OFF.

50. Check for continuity between PGM-FI main relay 1

(FI MAIN) 4P connector terminal No. 1 and ECM/
PCM connector terminals A2 and A3 individually.

Replace PGM-FI main relay 1 (FI MAIN).

Repair open in the wire between PGM-FI main

relay 1 (FI MAIN) and the ECM/PCM (A2, A3).

(cont’d)

Wire side of female terminals

Wire side of
female terminals

Is ther e batter y voltage?

Is ther e continuity?

05/06/27 17:38:36 61S6M040_110_0255

２１

２２

２３

−

YES

11-256

PGM-FI System

MIL Circuit Troubleshooting (cont’d)

ECM/PCM CONNECTOR A (31P)

PG1 (BLK)

PG2 (BLK)

LG2
(BRN/
YEL)

LG1
(BRN/YEL)

ECM/PCM CONNECTOR A (31P)

VCC1
(YEL/RED)

ECM/PCM CONNECTOR A (31P)

VCC1
(YEL/RED)

51. Measure voltage between body ground and ECM/

PCM connector terminals A4, A5, A23, and A24
individually.

Repair open in the wire(s) that had more than

0.2 V between G101 and the ECM/PCM (A4, A5, A23,
A24).

Go to step 52.

52. Measure voltage between body ground and ECM/

PCM connector terminal A21.

Go to step 59.

Go to step 53.

53. Turn the ignition switch OFF.

54. Disconnect the 3P connector from each of these

sensors, one at a time, and measure voltage
between body ground and ECM/PCM connector
terminal A21 with the ignition switch ON (II).

• Manifold absolute pressure (MAP) sensor
• Intake manifold tuning (intake manifold runner

control (IMRC)) valve position sensor (K20A3
engine)

• Output shaft (countershaft) speed sensor (A/T)

Replace the sensor that restored 5 V when

disconnected.

Go to step 55.

55. Turn the ignition switch OFF.

56. Disconnect the 3P connectors from these sensors:

• Manifold absolute pressure (MAP) sensor
• Intake manifold tuning (intake manifold runner

control (IMRC)) valve position sensor (K20A3
engine)

• Output shaft (countershaft) speed sensor (A/T)

57. Disconnect ECM/PCM connector A (31P).

Wire side of female terminals

Is ther e mor e than 0.2 V ?

Is ther e about 5 V ?

05/06/27 17:38:36 61S6M040_110_0256

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２６

−

YES

11-257

ECM/PCM CONNECTOR A (31P)

VCC1
(YEL/RED)

ECM/PCM CONNECTOR A (31P)

VCC2
(YEL/BLU)

ECM/PCM CONNECTOR A (31P)

VCC2
(YEL/BLU)

58. Check for continuity between ECM/PCM connector

terminal A21 and body ground.

Repair short in the wire between the ECM/

PCM (A21) and the MAP sensor, the IMT (IMRC)
valve position sensor, or the output shaft
(countershaft) speed sensor (A/T).

Update the ECM/PCM if it does not have the

latest software, or substitute a known-good ECM/
PCM (see page 11-6), then recheck. If the symptom/
indication goes away with a known-good ECM/PCM,
replace the original ECM/PCM (see page 11-284).

59. Measure voltage between body ground and ECM/

PCM connector terminal A20.

Go to step 66.

Go to step 60.

60. Turn the ignition switch OFF.

61. Disconnect the 3P connector from each of these

sensors, one at a time, and measure voltage
between body ground and ECM/PCM connector
terminal A20 with the ignition switch ON (II).

• Throttle position (TP) sensor
• Input shaft (mainshaft) speed sensor (A/T)

Replace the sensor that restored 5 V when

disconnected.

Go to step 62.

62. Turn the ignition switch OFF.

63. Disconnect the 3P connectors from these sensors:

• Throttle position (TP) sensor
• Input shaft (mainshaft) speed sensor (A/T)

64. Disconnect ECM/PCM connector A (31P).

(cont’d)

Wire side of female terminals

Is ther e continuity?

Is ther e about 5 V ?

05/06/27 17:38:36 61S6M040_110_0257

Content .. 135 136 137 138 ..