sensor TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine BE6653S00568P2497
6S0 00 47A06383
E2(−) PTNK(+)
ON
Vacuum
− DIAGNOSTICSENGINE (5VZ−FE)
DI−215
1996 TOYOTA T100 (RM449U)
4 Check voltage between terminals PTNK and E2 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See page SF−61).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector.
(1) Disconnect the vacuum hose from the vapor pres-
sure sensor.
(2) Using the MITYVAC (Hand−Held Vacuum Pump),
apply a vacuum to the vapor pressure sensor.
NOTICE:
The vacuum applied to the vapor pressure sensor must be
less than 66.7 kPa (500 mmHg, 19.7 in. Hg).
OK:
(1) Voltage: 2.9 − 3.7 V
(2) Voltage: 0.5 V or less
OK Go to step 6.
NG
5 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page
IN−26).
NG Repair or replace harness or connector.
OK
Replace vapor pressure sensor.

Downloaded from www.Manualslib.com manuals search engine S05709BE6653P24347P24346A00785
VSV Connector
START
For M/T
For A/TE2 (−) PTNK (+)
E2 (−) PTNK (+)
DI−218
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
10 Connect TOYOTA hand−held tester, when VSV connector for vapor pressure sen-
sor is disconnected and VSV for EVAP is ON, measure voltage between terminals
PTNK and E2 of ECM connector.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Disconnect the VSV connector for the vapor pressure
sensor.
(c) Select the ”ACTIVE TEST” mode on the TOYOTA hand−
held tester.
(d) Start the engine.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector, when VSV for EVAP is ON, using the TOYOTA hand−
held tester.
OK:
Voltage: 2.0 V or less
OK Go to step 13.
NG
11 Check vacuum hose between charcoal canister and VSV for vapor pressure sen-
sor, vapor pressure sensor and VSV for vapor pressure sensor.
CHECK:
(a) Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.
(c) Check the vacuum hose for cracks, hole, damage and blockage.
NG Repair or replace.
OK

Downloaded from www.Manualslib.com manuals search engine − DIAGNOSTICSENGINE (5VZ−FE)
DI−219
1996 TOYOTA T100 (RM449U)
12 Check operation of VSV for vapor pressure sensor (See page SF−50).
NG Replace VSV.
OK
13 Check for open and short in harness and connector between EFI main relay
(Marking: EFI), VSV for vapor pressure sensor and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK

Downloaded from www.Manualslib.com manuals search engine S00049
P24346 P24347
A00117
Start
Stop Engine
OFF ON OFF ON VSV for
Vapor
Pressure
Sensor
VSV for
EVAP
5 sec. 5 sec.
Measure Voltage
E2 (−) PTNK (+)
E2 (−) PTNK (+)
For M/T
For A/T
DI−220
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
14 Check charcoal canister.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Remove the fuel tank cap.
(c) Disconnect the VSV connector for the vapor pressure
sensor.
(d) Select the ”ACTIVE TEST” mode on the TOYOTA hand−
held tester.
(e) Start the engine.
(f) The VSV for the EVAP is ON by the TOYOTA hand−held
tester and remains on for 5 sec.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector 5 sec. after switching VSV for EVAP from ON to OFF.
OK:
Voltage: 2.5 V or less
NG Replace charcoal canister.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine BE6653S00564A06382
ON
E2(−)VC(+)
− DIAGNOSTICSENGINE (5VZ−FE)
DI−221
1996 TOYOTA T100 (RM449U)
OBD II scan tool (excluding TOYOTA hand−held tester):
1 Check VSV connector for EVAP, VSV connector for vapor pressure sensor and
vapor pressure sensor connector for looseness and disconnection.
NG Repair or connect VSV or sensor connectors.
OK
2 Check vacuum hoses between throttle body and VSV for EVAP, VSV for EVAP
and charcoal canister, charcoal canister and VSV for vapor pressure sensor, VSV
for vapor pressure sensor and vapor pressure sensor.
CHECK:
(a) Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.
(c) Check the vacuum hose for cracks, hole, damage and blockage.
NG Repair or replace.
OK
3 Check voltage between terminals VCC and E2 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See page SF−61).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals VC and E2 of ECM con-
nector.
OK:
Voltage: 4.5 − 5.5 V
NG Check and replace ECM (See page IN−26).
OK

Downloaded from www.Manualslib.com manuals search engine BE6653S00568P2497
6S0 00 47A06383
E2(−) PTNK(+)
ON
Vacuum
DI−222
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
4 Check voltage between terminals PTNK and E2 of ECM connector.
PREPARATION:
(a) Remove the glove compartment (See page SF−61).
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector.
(1) Disconnect the vacuum hose from the vapor pres-
sure sensor.
(2) Using the MITYVAC (Hand−Held Vacuum Pump),
apply a vacuum to the vapor pressure sensor.
NOTICE:
The vacuum applied to the vapor pressure sensor must be
less than 66.7 kPa (500 mmHg, 19.7 in. Hg).
OK:
(1) Voltage: 2.9 − 3.7 V
(2) Voltage: 0.5 V or less
OK Go to step 6.
NG
5 Check for open and short in harness and connector between vapor pressure
sensor and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK
Replace vapor pressure sensor.

Downloaded from www.Manualslib.com manuals search engine BE6653P24353P24352
S05700
S05703
A00786VSV is ONVSV is OFF ON
For M/T
For A/TTPC
OFF
ON
OFF
ONTPC
DI−224
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
8 Check for open and short in harness and connector between EFI main relay
(Marking: EFI), VSV for EVAP and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−26).
9 Check VSV for vapor pressure sensor.
PREPARATION:
(a) Remove the right cowl side trim (See page SF−61).
(b) Turn the ignition switch ON.
CHECK:
Check VSV function.
(1) Connect between terminal TPC of ECM and body
ground (ON).
(2) Disconnect between terminal TPC of ECM and
body ground (OFF).
OK:
(1) VSV is ON:
Air flows from port E to port F.
(2) VSV is OFF:
Air flows from port E to port G.
OK Check and replace charcoal canister (See page
EC−1).
NG

Downloaded from www.Manualslib.com manuals search engine − DIAGNOSTICSENGINE (5VZ−FE)
DI−225
1996 TOYOTA T100 (RM449U)
10 Check operation of VSV for vapor pressure sensor.
NG Replace VSV.
OK
11 Check for open and short in harness and connector between EFI main relay
(Marking: EFI), VSV for vapor pressure sensor and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine FI7112 FI7166
A00081
T/M
Cable
Combination
MeterECM 4−pulseTo Speedometer Cable
No.1 Vehicle Speed SensorMagnet Reed Switch
S05704
Combination Meter
Speed
SensorFrom Cruise
Control ECUECM
E4 E4
(M/T)(A/T)812
6
C11GG
G
5 V
SP1
E1 DI−226
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
DTC P0500 Vehicle Speed Sensor Malfunction
CIRCUIT DESCRIPTION
This sensor is mounted in the combination meter. It contains a magnet which is rotated by the speed meter
cable.
Turning the reed switch ON and OFF 4 times for every revolution of the speedmeter.
It is then transmitted to the ECM. The ECM determines the vehicle speed based on the frequency of these
pulse signals.
DTC No.DTC Detecting ConditionTrouble Area
P0500
No speed sensor signal to ECM under conditions (a)
(2 trip detection logic)
(a) Vehicle is being drivenOpen or short in No.1 vehicle speed sensor circuit
No.1 vehicle speed sensor
ECM
Speedometer cable
WIRING DIAGRAM
DI0V3−01

Downloaded from www.Manualslib.com manuals search engine P19954
− DIAGNOSTICSENGINE (5VZ−FE)
DI−231
1996 TOYOTA T100 (RM449U)
DTC P0510 Closed Throttle Position Switch Malfunction
CIRCUIT DESCRIPTION
Refer to Throttle/ Pedal Position Sensor/ Switch ”A” Circuit Malfunction on page DI−163.
DTC No.DTC Detecting ConditionTrouble Area
P0510The closed throttle position switch does not turn ON even once
when the 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 ”CURRENT DATA”.
Throttle ValveClosed throttle position Switch SignalMalfunction
Fully ClosedOFFOpen Circuit
Fully OpenONShort Circuit
WIRING DIAGRAM
DI9AF−01