air condition TOYOTA HIGHLANDER 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 793 of 2572
G24767
GND1
Skid Control ECU
(harness side connector)S27
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-81 1
1001 Author: Date:
4 INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-32 (GND1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
5 RECONFIRM DTC
(a) Clear the DTCs (see page 05-765).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded? (see page 05-765).
HINT:
It is suspect that the DTCs output was caused by the poor connection of the connector terminal.
NO PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
(SEE PAGE 05-786)
YES
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
Page 794 of 2572
05-812
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1002 Author: Date:
DTC C1201/51 ENGINE CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
If trouble occurs in the engine control system, the skid control ECU prohibits TRAC and VSC control.
DTC No.DTC Detecting ConditionTrouble Area
C1201/51At the engine speed of 500 rpm, a trouble signal in the en-
gine control system continues for 5 secs. or more.Engine control system
INSPECTION PROCEDURE
1 CHECK DTC FOR ENGINE
(a) Check if the normal code is recorded for SFI system.
ANormal System Code
BTrouble Code
B REPAIR ENGINE CONTROL SYSTEM
ACCORDING TO DTC OUTPUT
A
REPLACE ECM
05CD6-06
Page 796 of 2572
F45165F44428F45351
ENG-
ENG+ENG-ENG+
Skid Control ECU
(harness side connector)
ECM
TRC+
TRC-
TRC+
TRC-S27
E5
G26183
ECME7
E1
05-814
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1004 Author: Date:
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(ECM - SKID CONTROL ECU)
(a) Disconnect the skid control ECU connector and ECM
connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-8 (TRC+) - E5-25 (TRC+)Below 1 W
S27-22 (TRC-) - E5-31 (TRC-)Below 1 W
S27-9 (ENG+) - E5-24 (ENG+)Below 1 W
S27-23 (ENG-) - E5-30 (ENG-)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-8 (TRC+) - Body ground10 kW or higher
S27-22 (TRC-) - Body ground10 kW or higher
S27-9 (ENG+) - Body ground10 kW or higher
S27-23 (ENG-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
2 CHECK HARNESS AND CONNECTOR(E1 OF ECM - BODY GROUND)
(a) Disconnect the ECM connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
E7-1 (E1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
Page 799 of 2572
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-817
1007 Author: Date:
DTC C1223/43 ABS CONTROL SYSTEM MALFUNCTION
CIRCUIT DESCRIPTION
HINT:
This DTC is output when the VSC system detects a malfunction in the ABS system.
When DTC C1223/43 is memorized, there is no malfunction in the skid control ECU.
DTC No.DTC Detecting ConditionTrouble Area
C1223/43Malfunction in ABS control systemABS control system
INSPECTION PROCEDURE
1 CHECK DTC(FOR ABS SYSTEM)
(a) Clear the DTCs (see page 05-765).
(b) Turn the ignition switch to the ON position.
(c) Are the same DTCs recorded? (see page 05-765)
NO PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE (SEE
PAGE 05-786)
YES
REPAIR CIRCUIT INDICATED BY OUTPUT DTC
05CD8-07
Page 801 of 2572
G26436
Skid Control ECU
(harness side connector)S27
ECM
E5
NEO
NEO
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-819
1009 Author: Date:
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU - ECM)
(a) Disconnect the skid control ECU connector and the ECM
connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-10 (NEO) - E5-17 (NEO)Below 1 W
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-10 (NEO) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
Page 805 of 2572
G26292
IG1
ESSBAT
(+) (-)(+)
(-)
S14
Steering Angle Sensor
(harness side connector)
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-823
1013 Author: Date:
INSPECTION PROCEDURE
HINT:
When U0121/94, U0123/62, U0124/95 or U0126/63 are output together with C1231/31, inspect and
repair the trouble areas indicated by U0121/94, U0123/62, U0124/95 or U0126/63 first.
When the speed sensor or the yaw rate sensor has trouble, DTCs for the steering angle sensor may
be output even when the steering angle sensor is normal. When DTCs for the speed sensor or yaw
rate sensor are output together with other DTCs for the steering angle sensor, inspect and repair the
speed sensor and yaw rate sensor first, and then inspect and repair the steering angle sensor.
Start the inspection from step 1 when using the hand-held tester and start from step 2 when not using
the hand-held tester.
1 READ VALUE OF HAND-HELD TESTER(STEERING ANGLE SENSOR)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the DATA LIST mode on the hand-held tester.
(d) Check that the steering angle value of the steering angle sensor indicated on the hand-held tester,
changes when the steering wheel is turned.
ItemMeasurement Item /
Range (Display)Normal Condition
STEERING ANGSteering sensor/
Min.: -1152 deg, Max.: 1150.875 degMin.: -128 deg/s
Max.: 128 deg/s
OK:
Steering angle value should change.
OK REPLACE ABS & TRACTION ACTUATOR ASSY
(SEE PAGE 32-37)
NG
2 CHECK TERMINAL VOLTAGE(STEERING ANGLE SENSOR CONNECTOR)
(a) Remove the steering wheel and the column lower cover.
(b) Disconnect the steering angle sensor connector S14.
(c) Turn the ignition switch to the ON position.
(d) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
S14-1 (IG1) - S14-2 (ESS)10 to 14 V
S14-3 (BAT) - S14-2 (ESS)10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE STEERING ANGLE SENSOR
Page 808 of 2572
F45082IG Yaw Rate Sensor
(harness side connector)
Y1
F45082
GND
Yaw Rate Sensor
(harness side connector)
Y1
05-826
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1016 Author: Date:
2 CHECK HARNESS AND CONNECTOR(IG TERMINAL)
(a) Disconnect the yaw rate sensor connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
Y1-5 (IG) - Body ground10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
3 CHECK HARNESS AND CONNECTOR(GND TERMINAL)
(a) Disconnect the yaw rate sensor connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
Y1-1 (GND) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
Page 811 of 2572
G24767
GND1IG1
Skid Control ECU
(harness side connector)
S27
G24767
GND1
Skid Control ECU
(harness side connector)
S27
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
05-829
1019 Author: Date:
3 INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(IG1 TERMINAL)
WHEN USING HAND-HELD TESTER:
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the DATA LIST mode on the hand-held tester.
(d) Read the voltage condition output from the ECU displayed on the hand-held tester.
ItemMeasurement Item /
Range (Display)Normal Condition
IG VOLTAGEECU power supply voltage /
TOO LOW / NORMALNORMAL: 9.5 V or over
TOO LOW: Below 9.5 V
OK:
ºNormalº is displayed.
WHEN NOT USING HAND-HELD TESTER:
(a) Disconnect the skid control ECU connector S27.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester ConnectionSpecified Condition
S27-46 (IG1) - S27-32 (GND1)10 to 14 V
NG Go to step 4
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
4 INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a) Disconnect the skid control ECU connector S27.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-32 (GND1) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (GND TERMINAL - BODY
GROUND)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR (IG1 TERMINAL - BATTERY)
Page 816 of 2572
F47536
Free Pushed In1 2
Stop Lamp Switch Assy
@
C82562G25017G26188
STP Skid Control ECU
(harness side connector)
S27
Stop Lamp Switch
(harness side connector)
S15
STP
05-834
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1024 Author: Date:
4 INSPECT STOP LAMP SWITCH ASSY
(a) Disconnect the stop lamp switch assy connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch conditionTester connectionSpecified condition
Switch pin free1 - 2Below 1 W
Switch pin pushed in1 - 210 kW or higher
NG REPLACE STOP LAMP SWITCH ASSY
OK
5 CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH - SKID CONTROL
ECU)
(a) Disconnect the stop lamp switch connector and skid con-
trol ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-27 (STP) - S15-1 (STP)Below 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(SEE PAGE 32-37)
Page 818 of 2572
G24767GND2
Skid Control ECU
(harness side connector)
S27
05-836
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
1026 Author: Date:
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand-held tester and start from step 2 in case of not
using the hand-held tester.
1 PERFORM ACTIVE TEST BY HAND-HELD TESTER(ABS MOTOR RELAY
OPERATION)
(a) Connect the hand-held tester to the DLC3.
(b) Start the engine.
(c) Select the ACTIVE TEST mode on the hand-held tester.
(d) Check the operation sound of the ABS motor individually when operating it with the hand-held tester.
ItemVehicle Condition / Test DetailsVehicle Condition / Test Details
ABS MOT RELAYABS motor relay / ON or OFFON: Motor relay ON
OK:
The operation sound of the ABS motor should be heard.
NG Go to step 2
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)
2 INSPECT HARNESS AND CONNECTOR(GND2 OF SKID CONTROL ECU AND
BODY GROUND)
(a) Disconnect the skid control ECU connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
S27-1 (GND2) - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY (SEE PAGE 32-37)