Repair a short in the +B BACKUP FI-ECU wire between PCM connector No. 2 terminal No. 50 and the No. A12 (10 A) fuse in the under-hood fuse/relay box. Also replace the No. A12 (10 A) fuse.?
NO
Go to step 5.
5.
Fuse check 2:
Fuse check 2
?1.
Check the following fuse.
Fuse
No. A7 (20 A)
Location
Under-hood fuse/relay box
Is the fuse OK?
YES
Go to step 9.
NO
Go to step 6.
6.
Shorted wire check (+B IGP line):
Shorted wire check (+B IGP line)
?1.
Remove the blown No. A7 (20 A) fuse from the under-hood fuse/relay box.
?2.
Disconnect the following connector.
Relay circuit board connector C (18P)
?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector No. 2 (58P): disconnected
Relay circuit board connector C (18P): disconnected
Test point 1
Relay circuit board connector C (18P) (female terminals) No. 18:
Test point 2
Body ground
Is there continuity?
YES
Repair a short in the +B IGP wire between the No. A7 (20 A) fuse and the relay circuit board. If the wire is OK, replace the under-hood fuse/relay box. Also replace the No. A7 (20 A) fuse.?
NO
Go to step 7.
7.
Part(s) internal circuit check (short in FI MAIN RLY OUT line):
Part(s) internal circuit check (short in FI MAIN RLY OUT line)
?1.
Disconnect each of the parts or connectors below, one at a time, then check for continuity between test points 1 and 2.
PGM-FI main relay 2
PCM connector No. 2 (58P)
Test condition
Vehicle OFF (LOCK) mode
Relay circuit board connector C (18P): disconnected
Test point 1
Relay circuit board connector C (18P) (female terminals) No. 17:
Test point 2
Body ground
Does continuity go away when one of the above components is disconnected?
YES
Replace the part that made the short to body ground go away when it was disconnected. If the part is the PCM, check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If the symptom/indication goes away and the PCM was substituted, replace the original PCM. Also replace the No. A7 (20 A) fuse in the under-hood fuse/relay box.?
NO
Parts are OK. Go to step 8.
8.
Shorted wire check (FI MAIN RLY OUT line):
Shorted wire check (FI MAIN RLY OUT line)
?1.
Disconnect the following parts or connectors:
PGM-FI main relay 2
PCM connector No. 2 (58P)
?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
Relay circuit board connector C (18P): disconnected
PGM-FI main relay 2: disconnected
PCM connector No. 2 (58P): disconnected
Test point 1
Relay circuit board connector C (18P) (female terminals) No. 17:
Test point 2
Body ground
Is there continuity?
YES
Repair a short in the FI MAIN RLY OUT wire between the relay circuit board and each part. Also replace the No. A7 (20 A) fuse in the under-hood fuse/relay box.?
NO
The FI MAIN RLY OUT wire is OK. Replace the relay circuit board. Also replace the No. A7 (20 A) fuse in the under-hood fuse/relay box.?
Replace PGM-FI main relay 2. Also replace the No. B8 (20 A) fuse in the under-dash fuse/relay box.?
11.
Determine possible failure area (IG1 FUEL PUMP line, others):
Determine possible failure area (IG1 FUEL PUMP line, others)
?1.
Remove the blown No. B8 (20 A) fuse from the under-dash fuse/relay box.
?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector No. 2 (58P): disconnected
PGM-FI main relay 2: disconnected
Test point 1
PGM-FI main relay 2 4P socket (female terminals) No. 1:
Test point 2
Body ground
Is there continuity?
YES
Go to step 12.
NO
Go to step 13.
12.
Shorted wire check (IG1 FUEL PUMP line):
Shorted wire check (IG1 FUEL PUMP line)
?1.
Disconnect the following connector.
Under-dash fuse/relay box connector C (27P)
?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector No. 2 (58P): disconnected
PGM-FI main relay 2: disconnected
Under-dash fuse/relay box connector C (27P): disconnected
Test point 1
PGM-FI main relay 2 4P socket (female terminals) No. 1:
Test point 2
Body ground
Is there continuity?
YES
Repair a short in the IG1 FUEL PUMP wire between PCM connector No. 2 terminal No. 51, PGM-FI main relay 2, and the No. B8 (20 A) fuse in the under-dash fuse/relay box. Also replace the No. B8 (20 A) fuse.?
NO
The IG1 FUEL PUMP wire is OK. Replace the No. B8 (20 A) fuse in the under-dash fuse/relay box. If the fuse blown again, replace the under-dash fuse/relay box.?
13.
Shorted wire check (FUEL PUMP RLY OUT line):
Shorted wire check (FUEL PUMP RLY OUT line)
?1.
Disconnect the following connector.
Fuel tank unit 4P connector
?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
PCM connector No. 2 (58P): disconnected
PGM-FI main relay 2: disconnected
Fuel tank unit 4P connector: disconnected
Test point 1
Fuel tank unit 4P connector (female terminals) No. 1:
Test point 2
Body ground
Is there continuity?
YES
Repair a short in the FUEL PUMP RLY OUT wire between PGM-FI main relay 2 and the fuel tank unit. Also replace the No. B8 (20 A) fuse in the under-dash fuse/relay box.?
NO
The FUEL PUMP RLY OUT wire is OK. Check the fuel pump, and replace it if needed. Also replace the No. B8 (20 A) fuse in the under-dash fuse/relay box.?
The GND wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM, then recheck. If the symptom/indication goes away and the PCM was substituted, replace the original PCM.?
NO
Repair an open in the GND wire(s) between PCM connector No. 2 terminals (No. 1, No. 3, No. 5) and G301.?
