1996 TOYOTA TERCEL Timing

V08423 Knock Sensor 1
GRECM
KNK
E1 12
E6
WIRING DIAGRAM
Wiring Diagram
This shows a wiring diagram of the circuit.
Use this diagram together with ELECTRICAL
WIRING DIAGRAM to thoroughly understand the
circuit.
Wire colors are indicated by an alphabetical code.
B = Black, L = Blue, R = Red, BR = Brown,
LG = Light Green, V = Violet, G = Green,
O = Orange, W = White, GR = Gray, P = Pink,
Y = Yellow, SB = Sky Blue
The first letter indicates the basic wire color and
the second letter indicates the color of the stripe.
DTC P0325Knock Sensor 1 Circuit Malfunction
CIRCUIT DESCRIPTION
Knock sensor is fitted to the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which
generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates due to knocking. If engine
knocking occurs, ignition timing is retarded to suppress it.
DTC No. DTC Detection Condition Trouble Area
P0325No knock sensor 1 signal to ECM with engine speed,
1,200 rpm or more.
Open or short in knock sensor1 circuit

Knock sensor 1 (looseness)

ECM
If the ECM detects the above diagnosis conditions, it operates the fall safe function in which the corrective retard angle
value is set to the maximum value.

Diagnostic Trouble Code No. and Detection Item

Circuit Description
The major role and operation, etc. of the circuit
and its component parts are explained.

Indicates the diagnostic trouble code, diagnostic
trouble code set parameter and suspect area of
the problem.

IN-24
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
1996 TERCEL (RM440U)
6. CIRCUIT INSPECTION
How to read and use each page is shown below.

- INTRODUCTIONTERMS
IN-35
35 Author
: Date
:
1996 TERCEL (RM440U) TC
Turbocharger
TCCSTOYOTA Computer-Controlled System
TCVTiming Control Valve
TDCTop Dead Center
TEMP.Temperature
TEMSTOYOTA Electronic Modulated Suspension
TISTotal Information System For Vehicle Development
T/MTransmission
TMCTOYOTA Motor Corporation
TMMKTOYOTA Motor Manufacturing Kentucky, Inc.
TRACTraction Control System
TURBOTurbocharge
U/DUnderdrive
U/SUndersize
VCVVacuum Control Valve
VENTVentilator
VINVehicle Identification Number
VPSVariable Power Steering
VSCVehicle Skid Control
VSVVacuum Switching Valve
VTVVacuum Transmitting Valve
w/With
WGNWagon
W/HWire Harness
w/oWithout
1stFirst
2ndSecond
2WDTwo Wheel Drive Vehicle (4x2)
4WDFour Wheel Drive Vehicle (4x4)

MA00R-19
MA0659
Upper Lower
- MAINTENANCEENGINE
MA-5
43 Author
: Date
:
1996 TERCEL (RM440U)
ENGINE
INSPECTION
HINT:
Inspect these items when the engine is cold.
1. REPLACE TIMING BELT (See pages EM-12 and
EM-17)
2. INSPECT DRIVE BELTS (See pages CH-2, SR-3 and
AC-18)
3. INSPECT AIR FILTER
(a) Visually check that the air filter is not excessively dirty,
damaged or oily.
If necessary, replace the air filter.
(b) Clean the air filter with compressed air.
First blow from the upper side thoroughly, then blow off
the lower side of the air filter.
4. REPLACE AIR FILTER
Replace the air filter with a new one.
5. REPLACE SPARK PLUGS (See page IG-1)
6. REPLACE ENGINE OIL AND OIL FILTER (See page
LU-3)
7. REPLACE ENGINE COOLANT (See page CO-2)
8. INSPECT CHARCOAL CANISTER (See page EC-5)
9. REPLACE GASKET IN FUEL TANK CAP (See page
EC-5)
10. INSPECT FUEL LINES AND CONNECTIONS (See
page EC-5)
11. INSPECT EXHAUST PIPES AND MOUNTINGS
Visually check the pipes, hangers and connections for severe
corrosion, leaks or damage.
12. ADJUST VALVE CLEARANCE (See page EM-4)

PP-4
- PREPARATIONENGINE MECHANICAL
51 Author
: Date
:
1996 TERCEL (RM440U)
(09954-05020)Claw No.2Crankshaft pulley
09960-10010Variable Pin Wrench Set
(09962-01000)Variable Pin Wrench Arm AssyCamshaft timing pulley
Camshaft sub-gear
(09963-01000)Pin 10Camshaft timing pulley
(09963-00500)Pin 5Camshaft sub-gear

SS0N5-03
- SERVICE SPECIFICATIONSENGINE MECHANICAL
SS-5
135 Author
: Date
:
1996 TERCEL (RM440U)
ENGINE MECHANICAL
SERVICE DATA
Compression
pressureat 250 rpm STD
Minimum
Difference of pressure between each cylinder1,275 kPa (13.0 kgf/cm2, 185 psi) or more
981 kPa (10.0 kgf/cm2, 142 psi)
98 kPa (1.0 kgf/cm2, 14 psi) or less
Valve clearanceat cold Intake
Exhaust
Adjusting shim (for repair part) No. 02
04
06
08
10
12
14
16
18
20
22
24
26
28
30
32
340.15 - 0.25 mm (0.006 - 0.010 in.)
0.31 - 0.41 mm (0.012 - 0.016 in.)
2.500 mm (0.0984 in.)
2.550 mm (0.1004 in.)
2.600 mm (0.1024 in.)
2.650 mm (0.1043 in.)
2.700 mm (0.1063 in.)
2.750 mm (0.1083 in.)
2.800 mm (0.1102 in.)
2.850 mm (0.1122 in.)
2.900 mm (0.1142 in.)
2.950 mm (0.1161 in.)
3.000 mm (0.1181 in.)
3.050 mm (0.1201 in.)
3.100 mm (0.1220 in.)
3.150 mm (0.1240 in.)
3.200 mm (0.1260 in.)
3.250 mm (0.1280 in.)
3.300 mm (0.1299 in.)
Ignition timingw/ Terminals TE1 and E1 connected of DLC110° BTDC @ idle
Idle speed-750 ± 50 rpm
Idler pulley tension
springFree length
Installed load at 47.4 mm (1.866 in.)38.4 mm (1.512 in.)
32 N (3.3 kgf, 7.3 lbf)
Cylinder headWarpage
Cylinder block side Maximum
Manifold sideMaximum
Valve guide bore diameter STD
O/S 0.05
Valve seat
Refacing angleIntake
Exhaust
Contacting angle
Contacting width
0.05 mm (0.0020 in.)
0.05 mm (0.0020 in.)
11.000 - 11.027 mm (0.4331 - 0.4342 in.)
11.050 - 11.077 mm (0.4350 - 0.4361 in.)
30°, 45°, 60°, 75°
30°, 45°, 75°
45°
1.0 - 1.4 mm (0.039 - 0.055 in.)
Valve guide
bushingInside diameter
Outside diameter (for repair part) STD
O/S 0.056.010 - 6.030 mm (0.2366 - 0.2374 in.)
11.048 - 11.059 mm (0.4350 - 0.4354 in.)
11.098 - 11.109 mm (0.4369 - 0.4374 in.)
ValveValve overall length STD Intake
Exhaust
Minimum Intake
Exhaust
Valve face angle
Stem diameterIntake
Exhaust
Stem oil clearance STD Intake
Exhaust
Maximum Intake
Exhaust
Margin thickness STD
Minimum93.45 mm (3.6791 in.)
93.89 mm (3.6965 in.)
92.95 mm (3.6594 in.)
93.39 mm (3.6768 in.)
44.5°
5.970 - 5.985 mm (0.2350 - 0.2356 in.)
5.965 - 5.980 mm (0.2348 - 0.2354 in.)
0.025 - 0.060 mm (0.0010 - 0.0024 in.)
0.030 - 0.065 mm (0.0012 - 0.0026 in.)
0.08 mm (0.0031 in.)
0.10 mm (0.0039 in.)
0.8 - 1.2 mm (0.031 - 0.047 in.)
0.5 mm (0.020 in.)

SS0N6-04
SS-8
- SERVICE SPECIFICATIONSENGINE MECHANICAL
1996 TERCEL (RM440U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Cylinder head cover x Cylinder head7.07061 in.´lbf
No. 2 idler pulley x Cylinder head2828020
Camshaft timing pulley x Camshaft5151037
No. 1 idler pulley x Cylinder block18.518513
Crankshaft pulley x Crankshaft1551,55011 2
No. 2 crankshaft pulley x Crankshaft pulley1919514
RH engine mounting insulator x RH engine mounting bracket6465047
RH engine mounting insulator x Body7374054
No. 1 engine hanger x Cylinder head2121015
No. 2 engine hanger x Cylinder head5353038
Cylinder head x Cylinder block 1st
2nd45
Turn 90°450
Turn 90°33
Turn 90°
Camshaft bearing cap x Cylinder head131309
Intake manifold x Cylinder head19.519514
Intake manifold stay x Intake manifold2020015
Intake manifold stay x Cylinder block2020015
Exhaust manifold x Cylinder head4848035
Exhaust manifold stay x Cylinder block4040029
Exhaust manifold stay x Exhaust manifold4040029
Exhaust manifold heat insulator x Exhaust manifold8.08069 in.´lbf
Water outlet housing x Cylinder head3030022
Camshaft position sensor x Cylinder head8.08069 in.´lbf
EGR VSV x Cylinder head17.517513
EGR valve x Cylinder head17.517513
EGR pipe x EGR valve4040029
EGR pipe x Intake manifold3030022
PS ump bracket x Cylinder head4344032
Fuel inlet hose x Fuel filter2930022
Front exhaust pipe x Exhaust manifold6263049
Connecting rod cap x Connecting rod4040029
Crankshaft bearing cap x Cylinder block5858042
Rear oil seal retainer x Cylinder block7.57565 in.´lbf
Oil filter union x Cylinder block2525018
Oil pressure switch x Cylinder block131309
RH engine mounting bracket x Cylinder block5959043
Knock sensor x Cylinder block4545033
Generator bracket x Cylinder block2424018
Rear end plate x Cylinder block101007
Flywheel x Crankshaft9090065
Drive plate x Crankshaft9090065
Drive plate x Torque converter clutch2525018
A/C compressor bracket x Cylinder block2728020
PS pump adjusting strut x Cylinder block2121015

- DIAGNOSTICSENGINE
DI-7
1996 TERCEL (RM440U)
(b) Clear the DTC.
The following actions will erase the DTC and freezed
frame data.
(1) Operating the OBD II scan tool (complying with SAE
J1978) or TOYOTA hand-held tester to erase the
codes. (See the OBD II scan tool's instruction book
for operating instructions.)
(2) Disconnecting the battery terminals or EFI fuse.
NOTICE:
If the TOYOTA hand-held tester switches the ECM from
normal mode to check mode or vice-versa, or if the igni-
tion switch is turned from ON to ACC or OFF during check
mode, the DTC and freezed frame data will be erased.
4. FAIL-SAFE CHART
If any of the following codes is recorded, the ECM enters fail-safe mode.
DTC No.Fail-Safe OperationFail-Safe Deactivation Conditions
P0105Ignition timing fixed at 5° BTDCReturned to normal condition
P0110Intake air temp. is fixed at 20°C (68°F)Returned to normal condition
P0115Engine coolant temp. is fixed at 80°C (176°F)Returned to normal condition
P0120VTA is fixed at 0°
The following condition must be repeated at least 2 times
consecutively
When closed throttle position switch is ON:
0.1 V
VTA
0.95 V
P0141The heater circuit in which an abnormality is detected is
turned offIgnition switch OFF
P0325Max. timing retardationIgnition switch OFF
P1300Fuel cutIGF signal is detected for 4 consecutive ignitions
5. CHECK FOR INTERMITTENT PROBLEMS
HINT:
TOYOTA hand-held tester only:
By putting the vehicle's ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic
and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.
(a) Clear the DTC (See page DI-13).
(b) Set the check mode (See page DI-13).
(c) Perform a simulation test (See page IN-26).
(d) Check the connector and terminal (See page IN-26).
(e) Handle the connector (See page IN-26).
6. BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting should be performed in the
order for all possible circuits to be considered as the causes of the problems. In many cases, by carrying
out the basic engine check shown in the following flow chart, the location causing the problem can be found
quickly and efficiently. Therefore, use of this check is essential in engine troubleshooting.
1 Is battery positive voltage 11V or more when engine is stopped ?
NO Charge or replace battery.

P25914P25915A07081
TE1
E1 SST
DLC1
- DIAGNOSTICSENGINE
DI-9
1996 TERCEL (RM440U)
(e) Remove the fuse cover on the instrument panel.
(f) Connect the OBD II scan tool or TOYOTA hand-held tester to DLC3 on the vehicle.
CHECK:
Use CURRENT DATA to check the engine idle speed.
OK:
Idle speed: 700 - 800 rpm
NG Proceed to matrix chart of problem symptoms
on page DI-19.
OK
6 Check ignition timing.
PREPARATION:
(a) Warm up engine to normal operating temperature.
(b) Shift transmission into ºNº position.
(c) Keep the engine speed at idle.
(d) Using SST, connect terminals TE1 and E1 of DLC1.
SST 09843-18020
(e) Using a timing light, connect the tester to No.1 high-ten-
sion cord.
CHECK:
Check ignition timing.
OK:
Ignition timing: 10° BTDC at idle
NG Proceed to page IG-1 and continue to trouble-
shoot.
OK
Proceed to matrix chart of problem symp-
toms on page DI-19.