TOYOTA HIGHLANDER 2001 Service Repair Manual

A67445
A90342
A92641
E5
ECM
FC
Circuit Opening
Relay
R/B Sub-assy
1234
5678
A90342
A90344
A61075
A92642
Wire Harness Side
Instrument
Panel J/B
Assy
IGN fuse
I15
Ignition Switch
IG2R/B Sub-assy
Circuit Opening
Relay
05-352
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
542 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK WIRE HARNESS (ECM - CIRCUIT OPENING RELAY, CIRCUIT OPENING
RELAY - IGNITION SWITCH)
(a) Check the wire harness between the ECM and circuit
opening relay.
(1) Disconnect the E5 ECM connector.
(2) Remove the circuit opening relay from the R/B sub-
assy.
(3) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
E5-10 (FC) - R/B sub-assy circuit opening relay terminal 2Below 1 W
E5-10 (FC) or
R/B sub-assy circuit opening relay terminal 2 - Body ground10 kW or higher
(b) Check the wire harness between the circuit opening relay
and ignition switch.
(1) Check the IGN fuse.

Remove the IGN fuse from the instrument
panel J/B.

Measure the resistance of the IGN fuse.
Standard: Below 1 W

Reinstall the IGN fuse.
(2) Remove the circuit opening relay from the R/B sub-
assy.
(3) Disconnect the I15 ignition switch connector.
(4) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
R/B sub-assy circuit opening relay terminal 1 - I15-6 (IG2)Below 1 W
I15-6 (IG2) or
R/B sub-assy circuit opening relay terminal 1 - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

1 2 3
54
A74356
F12
Fuel Pump
A90342
A67586A92648
Circuit Opening Relay Wire Harness Side
F12
Fuel Pump
R/B Sub-assy
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-353
543 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REPLACE ECM (See page 10-9)
5 INSPECT FUEL PUMP ASSY
(a) Measure the resistance of the fuel pump terminals.
Standard:
Tester ConditionConditionSpecified Condition
4 - 520C (68F)0.2 to 0.3 W
(b) Check operation of the fuel pump.
(1) Apply battery voltage to both the terminals. Check
that the pump operates.
NOTICE:

These tests must be done quickly (within 10 seconds)
to prevent the coil from burning out.

Keep the fuel pump as far away from the battery as
possible.

Always turn ON and OFF the voltage on the battery
side, not the fuel pump side.
NG REPLACE FUEL PUMP ASSY
(See page 11-16)
OK
6 CHECK WIRE HARNESS (CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP -
BODY GROUND)
(a) Check the wire harness between the circuit opening relay
and fuel pump.
(1) Remove the circuit opening relay from the R/B sub-
assy.
(2) Disconnect the F12 fuel pump connector.
(3) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
R/B sub-assy circuit opening relay terminal 3 - F12-4Below 1 W
F12-4 or
R/B sub-assy circuit opening relay terminal 3 - Body ground10 kW or higher

A67586
F12
Fuel Pump Wire Harness Side
A53765
E5
ECM
FC
05-354
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
544 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Check the wire harness between the fuel pump and body
ground.
(1) Disconnect the F12 fuel pump connector.
(2) Measure the resistance between the wire harness
side connector and body ground.
Standard:
Tester ConnectionSpecified Condition
F12-5 - Body groundBelow 1 W
OK REPAIR OR REPLACE HARNESS AND
CONNECTOR
NG
REPLACE ECM (See page 10-9)
OBD II scan tool (excluding hand-held tester):
1 CHECK FUEL PUMP OPERATION (See Page 11-4)
(a) Check if there is pressure in the fuel inlet hose.
HINT:
The pipe has fuel pressure if the sound of flowing fuel can be heard.
OK PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-31)
NG
2 CHECK RELAY OPERATION (CIRCUIT OPENING RELAY)
(a) When connecting between terminal FC of the ECM con-
nector and body ground, check relay operation.
OK: Noise can be heard from the circuit opening
relay.
OK Go to step 6
NG

B60778
5
12312
5
3
A67446
FC (+)E1 (-)
E9
ECME5
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-355
545 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT CIRCUIT OPENING RELAY
(a) Remove the circuit opening relay from the R/B sub-assy.
(b) Measure the resistance of the circuit opening relay.
Standard:
Tester ConnectionSpecified Condition
3 - 510 kW or higher
3 - 5Below 1 W
(when battery voltage is applied to terminals 1 and 2)
NG REPLACE CIRCUIT OPENING RELAY
OK
4 INSPECT ECM (FC VOLTAGE)
(a) Turn the ignition switch ON.
(b) Measure the voltage of the ECM connectors.
Standard:
Tester ConnectionSpecified Condition
E5-10 (FC) - E9-1 (E1)9 to 14 V
OK REPLACE ECM (See page 10-9)
NG

A67445
A90342
A92641
E5
ECM
FC
R/B Sub-assy
Circuit Opening
Relay
1234
5678
A90342
A90344
A61075
A92642
Wire Harness Side
Instrument
Panel J/B
Assy
IGN fuse
I15
Ignition Switch
IG2R/B Sub-assy
Circuit Opening
Relay
05-356
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
546 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK WIRE HARNESS (ECM - CIRCUIT OPENING RELAY, CIRCUIT OPENING
RELAY - IGNITION SWITCH)
(a) Check the wire harness between the ECM and circuit
opening relay.
(1) Disconnect the E5 ECM connector.
(2) Remove the circuit opening relay from the R/B sub-
assy.
(3) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
E5-10 (FC) - R/B sub-assy circuit opening relay terminal 2Below 1 W
E5-10 (FC) or
R/B sub-assy circuit opening relay terminal 2 - Body ground10 kW or higher
(b) Check the wire harness between the circuit opening relay
and ignition switch.
(1) Check the IGN fuse.

Remove the IGN fuse from the instrument
panel J/B Assy.

Check the resistance of the IGN fuse.
Standard: Below 1 W

Reinstall the IGN fuse.
(2) Remove the circuit opening relay from the R/B sub-
assy.
(3) Disconnect the I15 ignition switch connector.
(4) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
R/B sub-assy circuit opening relay terminal 1 - I15-6 (IG2)Below 1 W
I15-6 (IG2) or
R/B sub-assy circuit opening relay terminal 1 - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

1 2 3
54
A74356
F12
Fuel Pump
A90342
A67586A92648
Wire Harness Side
F12
Fuel Pump
R/B Sub-assy
Circuit Opening Relay
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-357
547 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REPLACE ECM (See page 10-9)
6 INSPECT FUEL PUMP ASSY
(a) Measure the resistance of the fuel pump terminals.
Standard:
Tester ConditionConditionSpecified Condition
4 - 520C (68F)0.2 to 0.3 W
(b) Check operation of the fuel pump.
(1) Apply battery voltage to both the terminals. Check
that the pump operates.
NOTICE:

These tests must be done quickly (within 10 seconds)
to prevent the coil from burning out.

Keep the fuel pump as far away from the battery as
possible.

Always turns ON and OFF the voltage on the battery
side, not the fuel pump side.
NG REPLACE FUEL PUMP ASSY
(See page 11-16)
OK
7 CHECK WIRE HARNESS (CIRCUIT OPENING RELAY - FUEL PUMP, FUEL PUMP -
BODY GROUND)
(a) Check the wire harness between the circuit opening relay
and fuel pump.
(1) Remove the circuit opening relay from the R/B Sub-
Assy.
(2) Disconnect the F12 fuel pump connector.
(3) Measure the resistance of the wire harness side
connectors.
Standard:
Tester ConnectionSpecified Condition
R/B sub-assy circuit opening relay terminal 3 - F12-4Below 1 W
F12-4 or
R/B sub-assy circuit opening relay terminal 3 - Body ground10 kW or higher

A67586
F12
Fuel Pump Wire Harness Side
05-358
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
548 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Check the wire harness between the fuel pump and body
ground.
(1) Disconnect the F12 fuel pump connector.
(2) Measure the resistance between the wire harness
side connector and body ground.
Standard:
Tester ConnectionSpecified Condition
F12-5 - Body groundBelow 1 W
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE ECM (See page 10-9)

- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1929
2119 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
REMOTE OPERATION VIA MASTER SWITCH IS IMPOSSIBLE IN
THE OTHER DOOR (OPERATION VIA EACH DOOR SWITCH IS
POSSIBLE)
CIRCUIT DESCRIPTION
When the ignition switch is ON, the master switch (door ECU) sends a remote switch signal for the other seats
multiply to the body ECU, then the body ECU drives the power window motor for the other seats.
NOTICE:
The power window system has a function with a large-scale multiplex communications. First of all,
inspect the communication function depending on the ºhow to proceed with troubleshootingº, and
check that there is no abnormality in the communication system. Then finally proceed with the trou-
bleshooting.
0523N-06

B78735
P5
Power Window Regulator Master Switch Assy (Door ECU)
Multiplex Network Body ECU
P10
Power Window Regulator Switch
Assy (Passenger Side)P11
Power Window Regulator
Switch Assy Rear (Rear LH)
Passenger Side J/BCommunication Line
P12
Power Window Regulator
Switch Assy Rear (Rear RH)Passenger
Side J/B
MPX1
MPX2
RLURLD
14
13B11
W
O
BGRB10 212098
BR LGW-B MPX1MPX2
B11B11
B11B12
B10PUPDRRU RRD
YLGR
L-OP
LG-BGR
L-OR
LG-B
45 4 11
9
SU SD
14
54
5
SU
SDSU SD11
IN2 BB1
BC14H
4N 4L
IN2
1
1
W-B
2
12
BA 4L4L IN1
12 BB1
BB1BC1
BC1 W-BW-B
W-B
W-B
W-B W-B W-B4
49
BB IC IC 10
7IA1IO2 IO2
IA1 17 5GND1
W-BEE
E 8
7
10 6
B10
B9
7
167
71
4N 1
W-B 05-1930
- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
2120 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

- DIAGNOSTICSPOWER WINDOW CONTROL SYSTEM
05-1931
2121 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
1 CHECK HAND-HELD TESTER
(a) Monitor code
(1) Using the hand-held tester, inspect the monitor code of the door ECU.
HINT:

The monitor code shows the switch condition when a DTC is output.

When a monitor code is indicated while the switch is not operated, the switch is detected in being stuck.
When a monitor code is not indicated while the switch is operated, it is detected that the switch contact
condition is bad.
DTC CodeItemMonitor Item
B1221/21Driver's side switch 1 (operating)Any switch of the power window regulator master switch is ON
NG Go to step 3
OK