1996 TOYOTA TERCEL sensor

A15713
AT7809
4.5 - 5.5 V
0
Turn the wheel
- DIAGNOSTICSENGINE
DI-77
1996 TERCEL (RM440U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit. See combination
meter troubleshooting.
OK
2 Check voltage between terminal SPD of ECM connector and body ground.
PREPARATION:
(a) Remove the lower finish panel.
(b) Shift the shift lever to neutral.
(c) Jack up one of the front wheels.
(d) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal SPD of the ECM con-
nector and the body ground when the wheel is turned slowly.
OK:
Voltage is generated intermittently.
NG Check and repair harness and connector be-
tween combination meter and ECM.
OK
Check and replace ECM (See page IN-26).

A15717
- DIAGNOSTICSENGINE
DI-81
1996 TERCEL (RM440U)
DTC P0510 Closed Throttle Position Switch Malfunction
CIRCUIT DESCRIPTION
Refer to DTC P0120 on page DI-33.
DTC No.DTC Detection ConditionTrouble Area
P0510Closed throttle position switch does not turn ON even once
when vehicle is driven (2 trip detection logic)
Open in closed throttle position switch circuit

Closed throttle position switch

ECM
HINT:
After confirming DTC P0510, use the TOYOTA hand-held tester to confirm the closed throttle position switch
signal from the CURRENT DATA.
Throttle ValveClosed Throttle Position Switch SignalMalfunction
Fully closedOFFOpen circuit
Fully openONShort circuit
WIRING DIAGRAM
Refer to DTC P0120 on page DI-33.
INSPECTION PROCEDURE
HINT:
If DTCs P0110, P0115 and P0120 are output simultaneously, E2 (sensor ground) may be open.
TOYOTA hand-held tester:
1 Check for open in harness or ECM.
PREPARATION:
(a) Connect the TOYOTA hand-held tester to the DLC3.
(b) Disconnect the throttle position sensor connector.
(c) Connect the sensor wire harness terminals between ter-
minals 3 and 4.
(d) Turn the ignition switch ON.
CHECK:
Read thg CTP switch signal on the TOYOTA hand-held tester.
OK:
CTP switch signal: ON
OK Confirm good connection at sensor. If OK, re-
place throttle position sensor.
NG
DI95R-01

A15718
A15719
DI-82
- DIAGNOSTICSENGINE
1996 TERCEL (RM440U)
2 Check for open in harness or ECM.
PREPARATION:
(a) Remove the glove compartment (See page MF-54).
(b) Connect terminals IDL and E2 of the ECM connector to-
gether.
HINT:
The throttle position sensor connector is disconnected. Before
checking, do a visual check and contact pressure check for the
connector (See page IN-26).
(c) Turn the ignition switch ON.
CHECK:
Read the CTP switch signal on the TOYOTA hand-held tester.
OK:
CTP switch signal: ON
OK Open in harness between ECM and throttle
position sensor, repair or replace harness.
NG
Confirm connection at ECM. If OK, replace
ECM.
OBD II scan tool (excluding TOYOTA hand-held tester):
1 Check for open in harness or ECM.
PREPARATION:
(a) Disconnect the throttle position sensor connector.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals 3 and 4 of the throttle
position sensor connector.
OK:
Voltage: 9 - 14 V
OK Confirm good connection at sensor. If OK, re-
place throttle position sensor.

- DIAGNOSTICSENGINE
DI-83
1996 TERCEL (RM440U)
NG
2 Check for open in harness and connector between throttle position sensor and
ECM (See page IN-26).
NG Open in harness between ECM and throttle
position sensor.
OK
Confirm connection at ECM. If OK, replace
ECM.

S00591
From Battery
Ignition Coil
Spark Plug
IGC1
IGC2
GND TA C IGT1
IGT2
To Tachometer ECM G
NE
No.1 Cylinder
No.4 Cylinder
Various
Sensor
IGF
No.2 Cylinder
No.3 Cylinder Camshaft
Position
Sensor
Crankshaft
Position
SensorIgniter
DI-84
- DIAGNOSTICSENGINE
1996 TERCEL (RM440U)
DTC P1300 Ignition Circuit Malfunction
CIRCUIT DESCRIPTION
A DIS (Direct Ignition System) has been adopted. The DIS improves the ignition timing accuracy, reduces
high-voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.
The DIS is a 2-cylinder simultaneous ignition system which ignites 2 cylinders simultaneously with one igni-
tion coil. In the 2-cylinder simultaneous ignition system, each of the 2 spark plugs is connected to the end
of the secondary winding. High voltage generated in the secondary winding is applied directly to the 2 spark
plugs. The sparks of the 2 spark plugs pass simultaneously from the center electrode to the ground elec-
trode.
The ECM determines ignition timing end outputs the ignition signals (IGT) for each cylinder. Based on IGT
signals, the igniter controls the primary ignition signals (IGC) for all ignition coils. At the same time, the igniter
also sends an ignition confirmation signal (IGF) as a fail-safe measure to the ECM.
DTC No.DTC Detection ConditionTrouble Area
P1300No IGF signal to ECM while engine is running

Open or short in IGF or IGT circuit from igniter to ECM

Igniter

ECM
DI3A0-04

- DIAGNOSTICSENGINE
DI-89
1996 TERCEL (RM440U)
DTC P1335 Crankshaft Position Sensor Circuit
Malfunction (During engine running)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page DI-60.
DTC No.DTC Detection ConditionTrouble Area
P1335No crankshaft position sensor signal to ECM with engine
speed 1,000 rpm or more
Open or short in crankshaft position sensor circuit

Crankshaft position sensor

ECM
WIRING DIAGRAM
Refer to DTC P0335 on page DI-60.
DI1EH-14

DI4LN-02
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI-1 10
Check and Clear DTC (Pre-check)
P.
DI-1 11
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the indicated pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN-26
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI-1 11
Sensor CheckCircuit Inspection
P. DI-1 19 - DI-145
DTC Chart
P. DI-1 15Problem Symptoms Table
P. DI-1 18
Check for Fluid Leakage
P. DI-145
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 8:Diagnostic steps permitting the use of the
TOYOTA hand-held tester, or TOYOTA
brake-out-box.
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-109
283 Author
: Date
:
1996 TERCEL (RM440U)
ANTI-LOCK BRAKE SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshooting in accordance with the procedure on the following pages.

R13006
DLC1
E
1
TcTs
BR3904
0.13 sec. 0.13 sec.
ON
OFF
BR3893
Malfunction Code (Example Code 72, 76)
72 67
ON
OFF
0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.1.5 sec.
2.5 sec.4 sec.
Repeat
- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM
DI-1 13
1996 TERCEL (RM440U)
2. SPEED SENSOR SIGNAL CHECK
(a) Check the speed sensor signal.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843-18020
(3) Start the engine.
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI-138).
(5) Drive the vehicle faster than 45 km/h (28 mph) for
several seconds.
(6) Stop the vehicle.
(7) Using SST, connect terminals Tc and E
1 of the
DLC1.
SST 09843-18020
(8) Read the number of blinks of the ABS warning light.
HINT:
See the list of DTCs shown on the next page.

If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).

If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.
(9) After doing the check, disconnect terminals Ts and
E
1, and Tc and E1 of the DLC1, and turn ignition
switch OFF.