check engine TOYOTA CAMRY 2000 Service Repair Manual

A03027A03449
START
STA (+) w/o Immobiliser
w/ Immobiliser
STA (+)
DI±178
± DIAGNOSTICSENGINE (5S±FE)
413 Author: Date:
OBD II scan tool (excluding TOYOTA hand±held tester):
HINT:
This diagnostic chart is based on the premise that the engine is cranked normally. If the engine is not
cranked, proceed to the problem symptoms table on page DI±28.
1 Check voltage between terminal STA of ECM connector and body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal STA of the ECM connector
and body ground, during the engine cranking.
OK:
Voltage: 6 V or more
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±28).
NG
2 Check for open in harness and connector between ECM and starter relay
(Marking: ST) (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN±31).

BE6653
A03028
A03709
ON
+B (+)
E1
(±)
E1
(±)
+B (+)w/ Immobiliser w/o Immobiliser
DI±180
± DIAGNOSTICSENGINE (5S±FE)
415 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminals + B and E1 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals + B and E1 of the ECM
connector.
OK:
Voltage: 9 ~ 14 V
OK Proceed to next circuit inspection shown on
Problem symptoms table (See page DI±28).
NG
2 Check for open in harness and connector between terminal E1 of ECM and body
ground (See page IN±31).
NG Repair or replace harness or connector.
OK
3 Check EFI main relay (Marking: EFI) (See page SF±40).
NG Replace EFI main relay.
OK

A00355
IGN Fuse
Instrument Panel J/B
± DIAGNOSTICSENGINE (5S±FE)
DI±181
416 Author: Date:
4 Check EFI fuse (See page DI±173, step 2).
NG Check for short in all harness and components
connected to EFI fuse.
OK
5 Check for open in harness and connector between EFI main relay (Marking: EFI)
and battery, and EFI main relay and ECM (See page IN±31).
NG Repair or replace harness or connector.
OK
6 Check IGN fuse.
PREPARATION:
Remove the IGN fuse from the instrument panel J/B.
CHECK:
Check continuity of the IGN fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to IGN fuse.
OK

DI±182
± DIAGNOSTICSENGINE (5S±FE)
417 Author: Date:
7 Check ignition switch (See page BE±14).
NG Replace ignition switch.
OK
Check for open in harness and connector between IG switch and EFI main relay, and EFI main
relay and body ground (See page IN±31).

± DIAGNOSTICSENGINE (5S±FE)
DI±185
420 Author: Date:
INSPECTION PROCEDURE
TOYOTA hand±held tester:
1 Connect TOYOTA hand±held tester, and check operation of fuel pump
(See page DI±3).
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±28).
NG
2 Check for ECM power source circuit (See page DI±179).
NG Repair or replace.
OK
3 Check circuit opening relay (Marking: CIR OPN) (See page SF±41).
NG Replace circuit opening relay.
OK

A03029A03450
FC (+) ON
w/o Immobiliser
w/ Immobiliser
FC (+)
DI±186
± DIAGNOSTICSENGINE (5S±FE)
421 Author: Date:
4 Check voltage between terminal FC of ECM connector and body ground.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal FC of the ECM connector
and body ground.
OK:
Voltage 9 ~ 14 V
OK Go to step 5.
NG
Check for open in harness and connector between EFI main relay, and circuit opening relay and
circuit opening relay and ECM (See page IN±31).
5 Check fuel pump (See page SF±6).
NG Repair or replace fuel pump.
OK

A03030A03451
ON
FC
OFFON
Fuel Inlet Hose
FC
OFF
ON w/o Immobiliser
w/ Immobiliser
± DIAGNOSTICSENGINE (5S±FE)
DI±187
422 Author: Date:
6 Check for open in harness and connector between circuit opening relay (Mark-
ing: CIR OPN) and fuel pump, and fuel pump and body ground
(See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN±31).
OBD II scan tool (excluding TOYOTA hand±held tester):
1 Check operation of fuel pump.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Turn the ignition switch ON.
CHECK:
(a) Connect between terminal FC of the ECM connector and
body ground.
(b) Check for fuel pressure in the fuel inlet hose when it is
pinched off.
OK:
There is pressure in fuel inlet hose.
HINT:
At this time, you will hear a fuel return flowing noise.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±28).
NG

DI±188
± DIAGNOSTICSENGINE (5S±FE)
423 Author: Date:
2 Check for ECM power source circuit (See page DI±179).
NG Repair or replace.
OK
3 Check circuit opening relay (Marking: CIR OPN) (See page SF±41).
NG Replace circuit opening relay.
OK
4 Check voltage between terminal FC of ECM connector and body ground
(See page DI±183, step 4).
OK Go to step 5.
NG
Check for open in harness and connector between EFI main relay and circuit opening relay, and
circuit opening relay and ECM (See page IN±31).
5 Check fuel pump (See page SF±6).
NG Repair or replace fuel pump.
OK

± DIAGNOSTICSENGINE (5S±FE)
DI±189
424 Author: Date:
6 Check for open in harness and connector between circuit opening relay (Mark-
ing: CIR OPN) and fuel pump, and fuel pump and body ground
(See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN±31).

A03610
9
W±L
IK2
E9 10
II3
E9 18
LOCK IN
E1 14
EC
BRJ23
IK2 10
BR 1
2A/C Compressor
Lock SensorECM
BR W±L W±L
B
B BRJ/C
AA
A
BR
II3 J8
6J/C
*1: w/o Immobiliser
*2: w/ Immobiliser(*1) (*2)
E919
BR
E9 24
(*1) (*2)
DI±190
± DIAGNOSTICSENGINE (5S±FE)
425 Author: Date:
A/C Compressor Lock Sencor Circuit
CIRCUIT DESCRIPTION
This sensor sends 1 pulse par engine revolution to the ECM. If the number ratio of the compressor speed
divided by the engine speed is smaller than a predetermined value, the ECM turns the compressor off. And,
the indicator flashes at about 1 second intervals.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check compressor.
PREPARATION:
(a) Check the compressor drive belt tension (See page AC±16).
(b) Check if the compressor does not lock during operation with the engine started and blower switch and
A/C switch ON.
NG Adjust drive belt tension or repair compressor
(See page AC±17).
OK
DI01N±04