Toyota 3S-GE Repair Manual page 201

ENGINE — EFI SYSTEM
EG-187
Does check engine warning light come on when YES
ignition switch is om I System "°'ma"
I NO
ECU terminal W is grounded to the body? minal E1 and body ground. ECU.
IND I
Check bulb, fuse and wiring between ECU and .
_ ,_ _ Repair or replace.
ignition switch.
BAD
Repair or replace.
Does check engine warning light go off when the YES
. . System normal.
engine is started?
I NO
Check wiring between ECU and check engine BAD .
g _ ___, Repair.
warning light.
I OK
Does check engine warning light come on when YES Check wiring between ECU ter- OK Try another
BAD
Is there diagnostic code output when check
connector terminals TE1 and E1 connected?
check connector terminal E1.
NO Check wiring between ECU terminal TE1 and check
connector terminal TE1, and ECU terminal E1 and
I YES
Does check engine warning light go off after repair
according to malfunction code?
YES
System OK >I Cancel out diagnostic code. I
OK
NO .
Further repair required. grguanother
I/05413