Acura RSX Honda Integra. Manual — part 137
*01
05
+
−
−
−
−
YES
NO
YES
NO
11-254
PGM-FI System
MIL Circuit Troubleshooting (cont’d)
PGM-FI MAIN RELAY 1
(FI MAIN)
4P CONNECTOR
B
(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
Wire side of
female terminals
Is ther e batter y voltage?
Is ther e continuity?
05/06/27 17:38:35 61S6M040_110_0254
17
18
06
07
+
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
11-255
ECM/PCM CONNECTOR A (31P)
IGP1
(YEL/BLK)
IGP2
(YEL/BLK)
A
PGM-FI MAIN RELAY 1
(FI MAIN)
4P CONNECTOR
B
(WHT/BLK)
PGM-FI MAIN RELAY 1 (FI MAIN)
4P CONNECTOR
ECM/PCM CONNECTOR
E (31P)
IGP1 (YEL/BLK)
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
Wire side of
female terminals
Wire side of
female terminals
Is ther e batter y voltage?
Is ther e batter y voltage?
Is ther e continuity?
05/06/27 17:38:36 61S6M040_110_0255
21
22
23
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
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
Wire side of female terminals
Wire side of female terminals
Is ther e mor e than 0.2 V ?
Is ther e about 5 V ?
Is ther e about 5 V ?
05/06/27 17:38:36 61S6M040_110_0256
24
25
26
−
−
−
−
−
−
YES
NO
YES
NO
YES
NO
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
Wire side of female terminals
Wire side of female terminals
Is ther e continuity?
Is ther e about 5 V ?
Is ther e about 5 V ?
05/06/27 17:38:36 61S6M040_110_0257
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