O2 sensor TOYOTA CAMRY 2000 Service Repair Manual

Input SignalIndicator Light
Blinking Pattern
Drive at about
40 km/h (25 mph)
or below
Drive at about
40 km/h (25 mph)
or higherLightON
OFF
LightON
OFF
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±889
1124 Author: Date:
INSPECTION PROCEDURE
1 Input signal check.
CHECK:
(a) See input signal check on page DI±870.
(b) Check indicator light operation when driving with vehicle
speed above 40 km/h (25 mph), and with vehicle speed
below 40 km/h (25 mph).
OK:
Vehicle speed above 40 km/h (25 mph):
Indicator light blinks
Vehicle speed below 40 km/h (25 mph):
Indicator light stays on
OK Check and replace cruise control ECU
(See page IN±31).
NG
2 Check speedometer circuit (See Combination meter troubleshooting on page
BE±2).
NG Repair or replace harness, connector or com-
bination meter assembly.
OK
3 Check harness and connector between cruise control ECU and combination me-
ter, combination meter and vehicle speed sensor (See page IN±31).
NG Repair or replace harness or connector.
OK

DI±890
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1125 Author: Date:
4 Check vehicle speed sensor (See page BE±47).
NG Replace vehicle speed sensor.
OK
Check and replace cruise control ECU
(See page IN±31).

± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±891
1126 Author: Date:
DTC 23 Vehicle Speed Signal Abnormal
CIRCUIT DESCRIPTION
See page DI±888.
DTC No.Detection ItemTrouble Area
23Vehicle speed sensor pulse is abnormal.
Vehicle speed sensor

Cruise control ECU
WIRING DIAGRAM
See page DI±888.
INSPECTION PROCEDURE
1 Check vehicle speed sensor (See page BE±47).
NG Replace vehicle speed sensor.
OK
Check and replace cruise control ECU
(See page IN±31).
DI08Q±10

I00284
Cruise Control ECU
IDL 13
L±R *
2*1
ECM
IDL
*
1: 5S±FE Engine
*2: 1MZ±FE Engine E7 E8
C15
34
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±895
1130 Author: Date:
DTC 51 Idle Signal Circuit
CIRCUIT DESCRIPTION
When the idle switch is turned ON, a signal is sent to the ECU. The ECU uses this signal to correct the dis-
crepancy between the throttle valve position and the actuator position sensor value to enable accurate
cruise control at the set speed. If the idle switch is malfunctioning, problem symptoms also occur in the en-
gine, so also inspect the engine.
DTC No.Detection ItemTrouble Area
51Short in idle signal circuit.

Harness or connector between ECM and throttle position
sensor

Throttle position sensor

Harness or connector between cruise control ECU and ECM

Cruise control ECU
WIRING DIAGRAM
DI08S±10

AB0119
I00167
I00172
ON
IDL
(±) (+)
DI±896
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1131 Author: Date:
INSPECTION PROCEDURE
1 Check voltage between terminal IDL of cruise control ECU connector and body
ground.
PREPARATION:
(a) Remove the ECU with connector still connected.
(b) Disconnect the ECM connector.
(c) Turn ignition switch ON.
CHECK:
Measure voltage between terminal IDL of ECU connector and
body ground when the throttle valve is fully closed and fully
opened.
OK:
Throttle valve positionVoltage
Fully opened10 ± 14 V
Fully closedBelow 2 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±879).
NG
2 Check harness and connector between ECM and throttle position sensor
(See page IN±31).
NG Repair or replace harness or connector.
OK
3 Check throttle position sensor circuit (See page DI±243).
NG Replace throttle position sensor.
OK

I00052
Throttle Position Sensor
3
4
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±897
1132 Author: Date:
4 Check throttle position sensor.
PREPARATION:
Disconnect the throttle position sensor connector.
CHECK:
Measure resistance between terminals 3 and 4 of throttle posi-
tion sensor connector when the throttle valve is fully closed and
fully opened.
OK:
Throttle valve positionResistance
Fully opened1 MW or higher
Fully closedBelow 2.3 kW
NG Replace throttle position sensor.
OK
5 Check for open and short in harness and connector between cruise control ECU
and ECM (See page IN±31).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU
(See page IN±31).

I08434
Instrument Panel J/B
Ignition Switch
ECU±IG
B 9 J12
J/C
B±YC15
B±R C
C
GND
IG1
2
B±R IG1
Battery24
AM1
Instrument Panel J/B
AM1 1K1
W
B±GF9
F41
W±B
FL MAINCruise Control ECU
1J9
B±R
1K
1B1
16
C15
W±B
W±BJ8A
J7AJ/C
1J8
1J7Instrument Panel J/B
A J11
J/C FL BLOCK
ALT
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±909
1144 Author: Date:
ECU Power Source Circuit
CIRCUIT DESCRIPTION
The ECU power source supplies power to the actuator and sensors, etc, when terminal GND and the cruise
control ECU case are grounded.
WIRING DIAGRAM
DI08X±11

EC03A±03
B06542
PCV Valve
VSV for EGR
Front TWC
(California)EGR Vacuum Modulator
EGR Valve
TWC (Except California)
Rear TWC (California)
VSV for EVAP
Vent Line
Charcoal Canister
Fuel Tank
EVAP Line
Air Drain Hose
Filler Pipe
Air Inlet LinePurge Line Cutoff Valve
Fill Check Valve
EVAP Service Port
Fuel Tank Cap
VSV for Vapor
Pressure Sensor Vapor Pressure Sensor
EC±2
± EMISSION CONTROL (5S±FE)PARTS LAYOUT AND SCHEMATIC DRAWING
1400 Author: Date:
PARTS LAYOUT AND SCHEMATIC DRAWING
LOCATION

EC03B±03
B06549
VSV for EGR Front TWC
(California)EGR Vacuum Modulator
EGR
Valve
TWC (Except California)
Rear TWC (California)VSV
for EVAP
Vent Line
Charcoal CanisterFuel Tank EVAP Line
Air Drain HoseFiller Pipe
Air Inlet Line Purge LineEVAP Service Port
Fuel Tank Cap
Vapor
Pressure
SensorVSV for Vapor
Pressure Sensor
± EMISSION CONTROL (5S±FE)PARTS LAYOUT AND SCHEMATIC DRAWING
EC±3
1401 Author: Date:
DRAWING

EC03D±05
B06534
Vapor Pressure Sensor
ConnectorVSV for Vapor Pressure Sensor
ConnectorEVAP Line Hose
Vent Line Hose
Air Inlet Line Hose
Purge Line Hose
Air Drain Hose
39.2 (400, 29)
N´m (kgf´cm, ft´lbf) : Specified torqueCharcoal Canister
Assembly
Charcoal Canister
Vapor Pressure Sensor
Mounting Bolt
± EMISSION CONTROL (5S±FE)EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
EC±5
1403 Author: Date:
EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
COMPONENTS