1996 TOYOTA LAND CRUISER Terminal

A00167P22894
P24664
−
DIAGNOSTICS ENGINE
DI−67
1996 LAND CRUISER (RM451U)
DTC P0385 Crankshaft Position Sensor ”B” Circuit
Malfunction
CIRCUIT DESCRIPTION
The crankshaft position sensor (NE2 signal) consists of a signal plate and a pick up coil. The NE2 signal plate
has 34 teeth and is mounted on the crankshaft. When the crankshaft rotates, the protrusion on the signal
plate and the air gap on the pick up coil change, causing fluctuations i\
n the magnetic field and generating
an electromotive force in the pick up coil. The NE2 signal sensor generate\
s 34 signals for every engine revo-
lution. The ECM detects the standard crankshaft angle based on G1, G2 signals d\
etects the actual crank-
shaft angle and the engine speed by NE signals, and detects misfire by NE2 si\
gnals.
DTC No.DTC Detecting ConditionTrouble Area
P0385
No crankshaft position sensor signal (NE 2 signal) to ECM
during cranking. (2 trip detection logic) Open or short in crankshaft position sensor for NE2 signals.
 Crankshaft position sensor for NE2 signal.
 ECM
No crankshaft position sensor signal (NE 2 signal) to ECM with
engine speed 550 rpm or more. (2trip detection logic)
WIRING DIAGRAM
Refer to DTC 0335 (Crankshaft Position Sensor ”A” Circuit Malfunction)\
on page DI−62 for WIRING DIA-
GRAM.
INSPECTION PROCEDURE
1 Check resistance of crankshaft position sensor for NE2 signal.
PREPARATION:
Disconnect crankshaft position sensor connector.
CHECK:
Measure resistance between terminals 1 and 2 of crankshaft
position sensor connector.
OK:
Resistance
Cold1630 − 2740 Ω
Hot2065 − 3225 Ω
”Cold” is from − 10°C (14°F) to 50°C (122°F) of engine coolant
temperature and "Hot" is from 50°C (122°F) to 100°C (212°F).
Reference: INSPECTION USING OSCILLOSCOPE
Refer to page DI−62 for Reference INSPECTION USING OS-
CILLOSCOPE.
NG Replace crankshaft position sensor.
OK
DI5PJ−02
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A00168
ON
EGR Gas Temp.
Sensor ECM
19 9
1
2
BE6653
FI7055 THG
E2
E4
E5 5V
−
DIAGNOSTICS ENGINE
DI−71
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
TOYOTA hand −held tester
1 Connect the TOYOTA hand −held tester and read value of EGR gas temp. value.
PREPARATION:
(a) Remove the fuse cover on the instrument panel.
(b) Connect the TOYOTA hand−held tester to the DLC3.
(c) Turn ignition switch ON and push the TOYOTA hand −held tester main switch ON.
CHECK:
Read EGR gas temp. on the TOYOTA hand−held tester.
OK:
EGR gas temp.: 10° C (50°F) or more
HINT:
If there is and open circuit, the TOYOTA hand−held tester indicates 3.1 °C (37.6° F).
OK Go to step 4.
NG
2 Check for open in harness or ECM.
PREPARATION:
(a) Disconnect the EGR gas temp. sensor connector.
(b) Connect sensor wire harness terminals together.
(c) Turn ignition switch ON.
CHECK:
Read EGR gas temp. on the TOYOTA hand−held tester.
OK:
EGR gas temp.: Approx. 157.5° C (315.5°F)
OK Confirm good connection at sensor. If OK, replace EGR gas temp. sensor.
NG
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A00169
ON
EGR Gas Temp.
Sensor ECM
1
2 19
9
THG E2
BE6653
FI7057
P22167 E4
E5
THG E2 5V
DI−72
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
3 Check for open in harness or ECM.
PREPARATION:
(a) Remove the instrument panel speaker No.1 panel (See
page SF−65 ).
(b) Connect between terminals THG and E2 of ECM connec-
tor.
HINT:
EGR gas temp. sensor connector is disconnected.
Before checking, do a visual check and contact pressure check
for the ECM connector (See page IN−28).
CHECK:
Read EGR gas temp. on the TOYOTA hand−held tester.
OK:
EGR gas temp.: Approx. 157.5° C (315.5°F)
OK Open in harness between terminals E2 or THG. Repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM (See page IN−28).
4 Check the connection of the vacuum hose, EGR hose (See page EC−11).
NG Repair or replace.
OK
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P24665
A00171
ON(−)(+)
BE6653
P22896
P24666
−
DIAGNOSTICS ENGINE
DI−75
1996 LAND CRUISER (RM451U)
OBD II scan tool (excluding TOYOTA hand −held tester)
1 Check resistance of EGR gas temp. sensor.
PREPARATION:
Disconnect EGR gas temp. sensor connector.
CHECK:
Measure resistance between terminals of EGR gas temp. sen-
sor connector.
OK:
Resistance: 600 k Ω or less
HINT:
If there is open circuit, ohmmeter indicates 720 k Ω or more.
NG Check and replace EGR gas temp. sensor (See page SF−63 ).
OK
2 Check for open in harness or ECM.
PREPARATION:
(a) Disconnect EGR gas temp. sensor connector.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals of EGR gas temp. sensor
wire harness side connector.
OK:
Voltage: 4.5 − 5.5 V
OK Go to step 4.
NG
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A00172
ON
THG E2 (+)(−)
BE6653
P24667
DI−76
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
3 Check for open in harness or ECM.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page
SF−65 ).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals of THG and E2 of ECM
connector.
HINT:
EGR gas temp. sensor connector is disconnected.
OK:
Voltage: 4.5 − 5.5 V
OK Open in harness between terminals E2 or THG. Repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM (See page IN−28).
4 Check connection of vacuum hose, EGR hose (See page EC−11).
NG Repair or replace.
OK
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A00173
ON
EGR ONOFF
(1) VSV is ON:
(2) VSV is OFF: Air
GE
Air GE
BE6653
P22905
P22963
P22964
−
DIAGNOSTICS ENGINE
DI−77
1996 LAND CRUISER (RM451U)
5 Check the VSV for EGR.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page
SF−65 ).
(b) Turn ignition switch ON.
CHECK:
Check VSV function.
(1) Connect between terminal EGR of ECM and bodyground (ON).
(2) Disconnect between terminal EGR of ECM and
body ground (OFF).
OK:
(1) VSV is ON:
Air does not flow from pipe G to pipe E.
(2) VSV is OFF:
Air from pipe G is flows out through pipe E.
OK Go to step 7.
NG
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P24665
DI−82
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
4 Check the VSV for EGR (See page DI−69 ).
OK Check EGR valve (See page EC−11).
NG
5 Check operation of the VSV for EGR (See page SF−60).
NG Replace VSV for EGR.
OK
Check for short in harness and connector
between VSV and ECM (See page IN−28).
OBD II scan tool (excluding TOYOTA hand −held tester)
1 Check resistance of EGR gas temp. sensor (See page DI−105).
PREPARATION:
Disconnect EGR gas temp. sensor connector.
CHECK:
Measure resistance between terminals of EGR gas temp. sen-
sor connector.
OK:
Resistance: 2.5 k Ω or more
(Not immediately after driving)
HINT:
If there is short circuit, ohmmeter indicates 200 Ω or less.
NG Replace EGR gas temp. sensor.
OK
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A00176
ONSPD
(+)
(−)
BE6653
P24668
AT7809
9 − 14 V
0
Turn the wheel
DI−88
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedmeter in the co\
mbination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer displa\
y is normal.
NG Check speedometer circuit (See page BE−2 ).
OK
2 Check voltage between terminal SPD of ECM connector and body ground.
PREPARATION:
(a) Remove instrument panel speaker No.1 panel (See page SF−65 ).
(b) Disconnect cruise control ECU connector.
(c) Shift the shift lever to neutral.
(d) Jack up a rear wheels on one side.
(e) Turn ignition switch ON.
CHECK:
Measure voltage between terminal SPD of ECM connector and
body ground when the wheel is turned slowly.
OK:
Voltage is generated intermittently.
NG Check and repair harness and connector between combination meter and ECM.
OK
Check and replace ECM (See page IN−28 ).
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