1996 TOYOTA TERCEL ad blue

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.

PP17B-01
PP-80
- PREPARATIONAIR CONDITIONING
127 Author
: Date
:
1996 TERCEL (RM440U)
AIR CONDITIONING
SST (Special Service Tools)
07110-58060Air Conditioner Service Tool Set
(07117-58060)Refrigerant Drain Service Valve
(07117-58070)T-Joint
(07117-58080)Quick Disconnect AdapterDischarge (diam. 16 mm)
(07117-58090)Quick Disconnect AdapterSuction (diam. 13 mm)
(07117-78050)Refrigerant Charging Gauge
(07117-88060)Refrigerant Charging HoseDischarge (Red)
(07117-88070)Refrigerant Charging HoseSuction (Blue)
(07117-88080)Refrigerant Charging HoseUtility (Green)
07112-66040Magnetic Clutch Remover
07112-76050Magnetic Clutch Stopper
07114-84020Snap Ring Pliers

P03849
Overall Length
EM0255
P20367
45° Carbide Cutter
Z07819
Width
Z08336
45°
1.0 - 1.4 mm30° EM-34
- ENGINE MECHANICALCYLINDER HEAD
1996 TERCEL (RM440U)
(d) Check the valve overall length.
Standard overall length:
Intake93.45 mm (3.6791 in.)
Exhaust93.89 mm (3.6768 in.)
Minimum overall length:
Intake92.95 mm (3.6594 in.)
Exhaust93.39 mm (3.6768 in.)
If the overall length is less than minimum, replace the valve.
(e) Check the surface of the valve stem tip for wear.
If the valve stem tip is worn, resurface the tip with a grinder or
replace the valve.
NOTICE:
Do not grind off more than minimum.
7. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45° carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
(b) Check the valve seating position.
(c) Apply a light coat of prussian blue (or white lead) to the
valve face. Lightly press the valve against the seat. Do not
rotate valve.
(d) Check the valve face and seat for the following:
(1) If blue appears 360° around the face, the valve is
concentric. If not, replace the valve.
(2) If blue appears 360° around the valve seat, the
guide and face are concentric. If not, resurface the
seat.
(3) Check that the seat contact is in the middle of the
valve face with the following width:
1.0 - 1.4 mm (0.039 - 0.055 in.)
If not, correct the valve seats as follows:
(1) If the seating is too high on the valve face, use 30°
and 45° cutters to correct the seat.

CH0H6-01
Z11580
Blue White Red
OK Charging
NecessaryInsufficient
Water
N00313
CH-2
- CHARGINGCHARGING SYSTEM
1996 TERCEL (RM440U)
ON-VEHICLE INSPECTION
1. CHECK BATTERY SPECIFIC GRAVITY AND ELEC-
TROLYTE LEVEL
(a) Check the electrolyte quantity of each cell.
If insufficient, refill with distilled (or purified) water.
(b) Check the specific gravity of each cell.
Standard specific gravity:
1.27 - 1.29 at 20°C (68°F)
If the specific gravity is less than specification, charge the bat-
tery.
HINT:
Check the indicator as shown in illustration.
2. CHECK BATTERY TERMINALS, FUSIBLE LINK AND
FUSES
(a) Check that the battery terminals are not loose or cor-
roded.
If the terminals are corroded, clean the terminals.
(b) Check the fusible link and fuses for continuity.
Fusible linkMAIN 2.0A
HfALT 100AH-fuseAM1 50A
AM2 15A
FGAUGE 15AFuseIGN 7.5A
ALT-S 7.5A
3. INSPECT DRIVE BELT
(a) Visually check the drive belt for excessive wear, frayed
cords etc.
If any defect is found, replace the drive belt.
HINT:
Cracks on the rib side of a drive belt are considered acceptable.
If the drive belt has chunks missing from the ribs, it should be
replaced.