1. | Turn the ignition switch OFF. |
2. | Connect the HDS to the DLC. NOTE: Make sure the HDS is properly connected to the DLC. |
3. | Turn the ignition switch ON (II), and read the HDS. Does the HDS identify the vehicle? YES - Go to 4. NO - Go to 23. |
4. | Check for Temporary DTCs or DTCs in the PGM-FI system with the HDS. Are any Temporary DTCs or DTCs indicated? YES - Go to the indicated DTC's troubleshooting.n NO - Go to 5. |
5. | Turn the ignition switch OFF. |
6. | Turn the ignition switch ON (II), and watch the SRS indicator. Does the SRS indicator stay on? YES - Go to the SRS system's general troubleshooting information. NO - |
7. | Turn the ignition switch OFF. |
8. | Turn the ignition switch ON (II), and watch the ABS indicator. Does the ABS indicator stay on? YES - Go to the ABS system's general troubleshooting information.n NO - |
9. | Turn the ignition switch OFF. |
10. | Turn the ignition switch ON (II), and watch the VSA indicator. Does the VSA indicator stay on? YES - Go to the VSA system's general troubleshooting information.n NO - |
11. | Turn the ignition switch OFF. |
12. | Turn the ignition switch ON (II), and watch the EPS indicator. Does the EPS indicator stay on? YES - Go to the EPS system's general troubleshooting information.n NO - Go to 13. |
13. | Turn the ignition switch OFF. |
14. | Turn the ignition switch ON (II), and watch the immobilizer indicator. Does the immbilizer indicator stay on or flash? YES - Go to the immobilizer system's troubleshooting.n NO - Go to 15. |
15. | Do the gauge self- diagnostic function. |
16. | Check for B-CAN system DTCs without the HDS. Are any B-CAN DTCs indicated? YES - Go to the indicated DTC's troubleshooting.n NO - Go to 17. |
17. | Turn the ignition switch OFF. |
18. | Disconnect the HDS from the DLC. |
19. | Check for continuity between DLC terminal No. 7 and body ground.
Is there 5 W or less? YES - Go to 20. NO - Go to 21. |
20. | Continue to check for continuity between DLC terminal No. 7 and body ground, while disconnecting these parts, one at a time:
Does continuity go away when one of the above components is disconnected? YES - Replace the part that caused an open when it was disconnected.n NO - Repair short in the wire between the DLC (K-line) and the ABS modulator-control unit (with ABS system), the VSA modulator-control unit (with VSA system), the SRS unit, the EPS control unit (with electrical power steering), the immobilizer-keyless control unit, the audio unit, or the under-dash fuse/relay box.n |
21. | Connect DLC terminal No. 7 to body ground with a jumper wire.
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22. | Check for continuity between body ground and these connector terminals:
Is there continuity between the DLC terminal and each of the terminals in the chart? YES - Replace the unit which cannot communicate with the HDS.n NO - Repair open in the wire between the DLC (K-line) and the appropriate connector.n |
23. | Do the gauge self- diagnostic function. |
24. | Check for B-CAN system DTCs without the HDS. Is DTC B1168, B1169 and/or B1178 indicated? YES - Go to 37. NO - Go to 25. |
25. | Turn the ignition switch OFF. |
26. | Disconnect the HDS from the DLC. |
27. | Measure voltage between DLC terminal No. 16 and body ground.
Is there battery voltage? YES - Go to 28. NO - Repair open in the wire between DLC terminal No. 16 and the No. 23 BACK UP (10 A) fuse in the under-hood fuse/relay box.n |
28. | Measure voltage between DLC terminals No. 4 and No. 16.
Is there battery voltage? YES - Go to 29. NO - Repair open in the wire between DLC terminal No. 4 and body ground (LHD: G502, RHD: G503).n |
29. | Connect the HDS to the DLC. |
30. | Jump the SCS line with the HDS. |
31. | Disconnect ECM/PCM connector A (44P). |
32. | Disconnect the HDS from the DLC. |
33. | Connect DLC terminal No. 6 to body ground with a jumper wire.
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34. | Check for continuity between ECM/PCM connector terminal A36 and body ground.
Is there continuity? YES - Go to 35. NO - Repair open in the wire between the ECM/PCM (A36) and DLC terminal No. 6.n |
35. | Connect DLC terminal No. 14 to body ground with a jumper wire.
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36. | Check for continuity between ECM/PCM connector terminal A37 and body ground.
Is there continuity? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n NO - Repair open in the wire between the ECM/PCM (A37) and DLC terminal No. 14.n |
37. | Try to start the engine. Does the engine start and idle smoothly? YES - Go to F-CAN circuit troubleshooting.n NO - Go to 38. |
38. | Turn the ignition switch OFF. |
39. | Check the No. 2 IG MAIN (50 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Repair open in the wire between the No. 2 IG MAIN (50 A) fuse and the ignition switch. If the wire is OK, go to 40. NO - Repair short in the wire between the No. 2 IG MAIN (50 A) fuse and the under-hood fuse/relay box. Also replace the No. 2 IG MAIN (50 A) fuse.n |
40. | Inspect the No. 19 FI MAIN (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Go to 47. NO - Go to 41. |
41. | Remove the blown No. 19 FI MAIN (15 A) fuse from the under-hood fuse/relay box. |
42. | Remove PGM-FI main relay 1 (C) (A) from the under-hood fuse/relay box.
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43. | Check for continuity between body ground and PGM-FI main relay 1 (C) 4P connector terminals No. 1 and No. 3 individually.
Is there continuity? YES - Replace the under-hood fuse/relay box. Also replace the No. 19 FI MAIN (15 A) fuse.n NO - Go to 44. |
44. | Disconnect each of the components or connectors below, one at a time, and check for continuity between PGM-FI main relay 1 (C) 4P connector terminal No. 2 and body ground.
Does continuity go away when one of the above components is disconnected? YES - Replace the component that made the short to body ground go away when disconnected. If the item is the ECM/PCM, update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. Also replace the No. 19 FI MAIN (15 A) fuse.n NO - Go to 45. |
45. | Disconnect the all connectors from these components:
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46. | Check for continuity between PGM-FI main relay 1 (C) 4P connector terminal No. 2 and body ground.
Is there continuity? YES - Repair short in the wire between PGM-FI main relay 1 (C) and each item. Also replace the No. 19 FI MAIN (15 A) fuse.n NO - Replace PGM-FI main relay 1 (C). Also replace the No. 19 FI MAIN (15 A) fuse.n |
47. | Inspect the No. 2 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box. Is the fuse OK? YES - Go to 60. NO - Go to 48. |
48. | Remove the blown No. 2 FUEL PUMP (15 A) fuse in the under-dash fuse/relay box. |
49. | Jump the SCS line with the HDS. |
50. | Disconnect ECM/PCM connector C (44P). |
51. | Check for continuity between ECM/PCM connector terminal C36 and body ground.
Is there continuity? YES - Go to 52. NO - Replace the No. 2 FUEL PUMP (15 A) fuse, and update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n |
52. | Remove PGM-FI main relay 2 (FUEL PUMP) (A) from the under-dash fuse/relay box.
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53. | Check for continuity between ECM/PCM connector terminal C36 and body ground.
Is there continuity? YES - Repair short in the wire between the No. 2 FUEL PUMP (15 A) fuse and the ECM/PCM (C36), between the No. 2 FUEL PUMP (15 A) fuse and PGM-FI main relay 2 (FUEL PUMP), or between the No. 2 FUEL PUMP (15 A) fuse and the immobilizer control unit. Also replace the No. 2 FUEL PUMP (15 A) fuse.n NO - Go to 54. |
54. | Remove the rear seat cushion. |
55. | Remove the rear floor upper cross-member, and the access panel from the floor. |
56. | Disconnect the fuel pump 4P connector. |
57. | Check for continuity between fuel pump 4P connector terminal No. 2 and body ground.
Is there continuity? YES - Repair short in the wire between the fuel pump and PGM-FI main relay 2 (FUEL PUMP). Also replace the No. 2 FUEL PUMP (15 A) fuse.n NO - Go to 58. |
58. | Reinstall PGM-FI main relay 2 (FUEL PUMP) (A).
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59. | Check for continuity between fuel pump 4P connector terminal No. 2 and body ground.
Is there continuity? YES - Replace PGM-FI main relay 2 (FUEL PUMP). Also replace the No. 2 FUEL PUMP (15 A) fuse.n NO - Check the fuel pump, and replace it if necessary. Also replace the No. 2 FUEL PUMP (15 A) fuse.n |
60. | Jump the SCS line with the HDS. |
61. | Disconnect ECM/PCM connectors A (44P) and C (44P). |
62. | Turn the ignition switch ON (II). |
63. | Measure voltage between ECM/PCM connector terminal C36 and body ground.
Is there battery voltage? YES - Go to 64. NO - Repair open in the wire between the No. 2 FUEL PUMP (15 A) fuse and the ECM/PCM (C36).n |
64. | Measure voltage between ECM/PCM connector terminal A6 and body ground.
Is there battery voltage? YES - Go to 69. NO - Go to 65. |
65. | Turn the ignition switch OFF. |
66. | Remove PGM-FI main relay 1 (C) (A) from the under-hood fuse/relay box.
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67. | Measure voltage between PGM-FI main relay 1 (C) 4P connector terminal No. 3 and body ground.
Is there battery voltage? YES - Go to 68. |
68. | Check for continuity between PGM-FI main relay 1 (C) 4P connector terminal No. 4 and ECM/PCM connector terminal A6.
Is there continuity? YES - Test PGM-FI main relay 1 (C). If the relay is OK, update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n NO - Repair open in the wire between the ECM/PCM (A6) and PGM-FI main relay 1 (C).n |
69. | Turn the ignition switch OFF. |
70. | Remove PGM-FI main relay 1 (C) (A) from the under-hood fuse/relay box.
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71. | Measure voltage between PGM-FI main relay 1 (C) 4P connector terminal No. 1 and body ground.
Is there battery voltage? YES - Go to 72. |
72. | Check for continuity between PGM-FI main relay 1 (C) 4P connector terminal No. 2 and ECM/PCM connector terminal A8.
Is there continuity? YES - Go to 73. NO - Repair open in the wire between the ECM/PCM (A8) and PGM-FI main relay 1 (C).n |
73. | Test PGM-FI main relay 1 (C). Is PGM-FI main relay 1 (C) OK? YES - Go to 74. NO - Replace the PGM-FI main relay 1 (C).n |
74. | Disconnect ECM/PCM connector B (44P). |
75. | Check for continuity between body ground and ECM/PCM connector terminals B1, B36, C2, C40 and C44 individually.
Is there continuity? YES - Go to 76. NO - Repair open in the wire between the ECM/PCM (B1, B36, C2, C40, C44) and G101.n |
76. | Check for continuity between ECM/PCM connector terminal C13 and body ground.
Is there continuity? YES - Go to 77. NO - Go to 78. |
77. | Continue to check for continuity between ECM/PCM connector terminal C13 and body ground, while disconnecting these parts, one at a time:
Does continuity go away when one of the above components is disconnected? YES - Replace the part that caused an open when it was disconnected.n NO - Repair short in the wire between the ECM/PCM (C13) and the MAP sensor, the EOP sensor or the output shaft (countershaft) speed sensor.n |
78. | Check for continuity between ECM/PCM connector terminal B18 and body ground.
Is there continuity? YES - Go to 79. NO - Go to 80. |
79. | Continue to check for continuity between ECM/PCM connector terminal B18 and body ground, while disconnecting these parts, one at a time:
Does continuity go away when one of the above components is disconnected? YES - Replace the part that caused an open when it was disconnected.n NO - Repair short in the wire between the ECM/PCM (B18) and the IMT actuator, the EGR valve or the input shaft (mainshaft) speed sensor.n |
80. | Check for continuity between ECM/PCM connector terminal C12 and body ground.
Is there continuity? YES - Go to 81. NO - Go to 82. |
81. | Continue to check for continuity between ECM/PCM connector terminal C12 and body ground, while disconnecting the throttle body 6P connector. Is there continuity? YES - Repair short in the wire between the ECM/PCM (C12) and the throttle body.n |
82. | Check for continuity between ECM/PCM connector terminal A25 and body ground.
Is there continuity? YES - Go to 83. NO - Go to 84. |
83. | Continue to check for continuity between ECM/PCM connector terminal A25 and body ground, while disconnecting the APP sensor 6P connector. Is there continuity? YES - Repair short in the wire between the ECM/PCM (A25) and APP sensor A.n |
84. | Check for continuity between ECM/PCM connector terminal A24 and body ground.
Is there continuity? YES - Go to 85. NO - Go to 86. |
85. | Continue to check for continuity between ECM/PCM connector terminal A24 and body ground, while disconnecting the APP sensor 6P connector. Is there continuity? YES - Repair short in the wire between the ECM/PCM (A24) and APP sensor B.n |
86. | Check for continuity between ECM/PCM connector terminal A19 and body ground.
Is there continuity? YES - Go to 87. NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n |
87. | Continue to check for continuity between ECM/PCM connector terminal A19 and body ground, while disconnecting the A/C pressure sensor 3P connector. Is there continuity? YES - Repair short in the wire between the ECM/PCM (A19) and the A/C pressure sensor.n NO - Replace the A/C pressure sensor.n |