Page text (OCR transcript)
INSPECTION OF DIAGNOSIS CIRCUIT
ECU
BATT
+B
+B1
M-REL
IG SW
W
TE1
E1
Fusible Link
AM2 30A
Fuse
EFI 15A
EFI Main Relay
Ignition Switch
AM2
IG2
AM1
IG1
Fusible Link
ALT 100A AM1 40A
Fusible
Link
MAIN 2.0L
IGN 7.5A
GAUGE 7.5A
"CHECK" Engine
Warning Light
Battery
Check
Connector
TE1
E1
FJ3A11
1. Does "CHECK ENGINE" warning light come on when ignition switch is at ON?
YES → System Normal
NO ↓
Does "CHECK ENGINE" warning light come on when ECU terminal W is grounded to the body?
YES → Check wiring between ECU terminal E1 and body ground. → OK → Try another ECU.
NO ↓
Check bulb, fuse and wiring between ECU and ignition switch.
BAD → Repair or replace.
BAD ↓
Repair or replace.
2. Does "CHECK ENGINE" warning light go off when the engine is started?
YES → System Normal
NO ↓
Check wiring between ECU and "CHECK ENGINE" warning light.
BAD → Repair.
OK ↓
Is there diagnostic code output when check connector terminals TE1 and E1 are connected?
NO → Check wiring between check connector terminal TE1 and check connector terminal TE1, and ECU terminal E1 and check connector terminal E1.
YES ↓
Does "CHECK ENGINE" warning light go out after repairing according to malfunction code?
OK
NO → Further repair required. → Try another ECU.
YES ↓
System OK → Cancel out diagnostic code.
