TOYOTA AVENSIS 2005 Service Repair Manual

± DIAGNOSTICSABS WITH EBD SYSTEM
05±737
AVENSIS REPAIR MANUAL (RM1018E)
DTC AlwaysON MALFUNCTION IN ABS ECU
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
Always ON
Either of the following 1 or 2 is detected:
1. The ECU connectors are disconnected from the ECU.
2. There is a malfunction in the ECU internal circuit.

Battery

Charging system

Power source circuit

ABS warning light circuit

Skid control ECU
HINT:
There is a case that hand±held tester cannot be used when there is a malfunction in the ECU.
056SV±09

F45148
IK IJ Battery
*1: Gasoline
*2: 1CD±FTV
*3: LHD
*4: RHDIL IOEA
S2
W±B W±B W±B W±B
(*4)
W±B (*3 *1)
W±B (*3 *2)
AA A A A J15
J/CJ17 J/C
J16 J/C
6 S210
GND2
GND1 ALT
4D
4B4A1
1
1
B±G
(*1)
1 21 21 2 123 5
ALTAM2
B±R
IE4 IP111
(*3) (*4)
1
ED1
33
3B±G (*1)
1A 1
Engine Room J/B No.4B (*2)
B±R
B±L (*2) W (*2)
FL MAIN
B (*2) B±G (*1)Engine Room R/B No.3 Engine Room R/B No.1 & Engine Room J/B No.1 G±Y B±R
B (*2)
1 3
6 4
AM2 AM1
IG1
IG2 I13 Ignition SW
G±RB±R
W±B
1
DH DA DB DH DA
DN
DH51 18 2
18
9 IG1 RelayDriver Side J/B
IGN
ECU±IG
AM1J10
(*3)G
J20C
(*4)J/C
J10
(*3)G
J20C
(*4)R±WR±W
IE1 22IG1 WA S2
S2 18 22
IE117 9
17 (*3) (*4) (*3) (*4)
1 B±W CA CA
J8 J26 J8 J26 C11 C10
C10 Combination Meter
ABSSkid Control ECU
with Actuator
R±Y R±Y 22 J/C
1
W±B (*4)
W±B (*3)
R±W
B±W
05±738
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

F45088GNDGNDIG1
±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±739
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1RECONFIRM DTC
(a)Check the DTCs are output (See page 05±699).
YES REPAIR CIRCUIT INDICATED BY OUTPUTCODE
NO
2 INSPECT SKID CONTROL ECU CONNECTOR SECURELY CONNECTED
NO CONNECT CONNECTOR TO ECU
YES
3 INSPECT SKID CONTROL ECU CONNECTOR(IG1 TERMINAL VOLTAGE)
IN CASE OF USING HAND±HELD TESTER:
(a) Check the voltage condition, which is output from the ECU and displayed \
on the hand±held tester. OK:
ºNormalº is displayed.
IN CASE OF NOT USING HAND±HELD TESTER:
(a) Disconnect the skid control ECU connector.
(b) Turn the ignition switch ON.
(c) Measure the voltage between terminals IG1 and GND ofthe skid control ECU harness side connector.
Voltage: 10 to 14 V
OK Go to step 5
NG

F45088GNDGND
F45088GNDGNDWA
05±740
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a)Measure resistance between terminal GND of the skid control ECU harness side connector and body ground.
Resistance: 1
or less
NGREPAIR OR REPLACE HARNESS OR CONNECTOR(GND TERMINAL ± BODY
GROUND)(See page 01±32)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR(BATTERY ± IG1 TERMINAL)
(See page 01±32)
5INSPECT COMBINATION METER(ABS WARNING LIGHT)
(a)Disconnect the skid control ECU connector.
(b)Using service wire, connect terminals WA and GND of the skid control ECU harness side connector.
(c)Turn the ignition switch ON. OK:
ABS warning light goes off.
NGREPAIR OR REPLACE COMBINATION METER
OK
REPLACE BRAKE ACTUATOR ASSY(See page 32±54)

F45132
Battery FL MAINSkid Control ECU
with Actuator
B±G (*1) L (*1)
1 ALT ABS Engine Room R/B No.4 & Engine Room J/B No.4
1
4B
W±BS2
S21 2
+BM
12
1 2
GND1 GND2
S24
W±BW±B
*1: Gasoline
*2: 1CD±FTVEA4
L (*2)
W (*2)
2 12 33 11B1ABS ALT Engine Room R/B No.3Engine Room R/B No.1 &
Engine Room J/B No.1
B (*2)
B±G (*1)
± DIAGNOSTICSABS WITH EBD SYSTEM
05±735
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1350/51 PUMP MOTOR IS LOCKED/OPEN CIRCUIT
IN PUMP MOTOR GROUND
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1350/51
When any of the following 1 through 3 is detected.
1. No motor voltage supply after skid control ECU starts
the motor relay.
2. A high level of motor voltage when skid control ECU
does not start the motor relay.
3. The pump motor voltage is high level for a certain time
after the motor relay has elapsed.
Brake actuator pump motor
WIRING DIAGRAM
05C5B±01

05±736
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1RECONFIRM DTC
(a)Check if other DTCs are detected (See page 05±699). YES REPAIR CIRCUIT INDICATED BY OUTPUTCODE
NO
REPLACE BRAKE ACTUATOR ASSY(See page 32±54)

F45088GNDGNDIG1
±
DIAGNOSTICS ABS WITH EBD SYSTEM
05±733
AVENSIS REPAIR MANUAL (RM1018E)
DTCC1300/62SKID CONTROL ECU MALFUNCTION
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1300/62Internal control unit of skid control ECU failure.
ECU
INSPECTION PROCEDURE
1RECONFIRM DTC
ADTC C1300/62
BExcept DTC C1300/62
BREPAIR CIRCUIT INDICATED BY OUTPUT
CODE
A
2INSPECT SKID CONTROL ECU CONNECTOR(IG1 TERMINAL VOLTAGE)
IN CASE OF USING HAND±HELD TESTER:
(a)Check the voltage condition, which is output from the ECU and displayed \
on the hand±held tester. OK:
ºNormalº is displayed.
IN CASE OF NOT USING HAND±HELD TESTER:
(a)Disconnect the skid control ECU connector.
(b)Turn the ignition switch ON.
(c)Measure the voltage between terminals IG1 and GND ofthe skid control ECU harness side connector.
OK:
Voltage: 10 to 14 V
OKREPLACE BRAKE ACTUATOR ASSY (See page 32±54)
NG
0577W±04

F45088GNDGND
05±734
±
DIAGNOSTICS ABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3INSPECT SKID CONTROL ECU CONNECTOR(GND TERMINAL CONTINUITY)
(a)Measure resistance between terminal GND of the skid control ECU harness side connector and body ground.
OK:
Resistance: 1
or less
NGCHECK AND REPAIR HARNESS AND CONNECTOR(GND TERMINAL ± BODY
GROUND)(See page 01±32)
OK
CHECK AND REPAIR HARNESS AND CONNECTOR(BATTERY ± IG1 TERMINAL)
(See page 01±32)

05±730
± DIAGNOSTICSABS WITH EBD SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC C1249/58 STOP LIGHT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
C1249/58
Stop light switch circuit is open, and stop light switch
voltage is in the level between 40 % and 70 % of the
battery voltage.
Stop light switch

Stop light switch circuit
050XZ±13


F45775
Engine Room J/B No.4
ALT 1
4B1
4D B±G (*1)
B±L (*2) FL MAINS2 20
IR1Skid Control ECU
with Actuator
DA
DA DNDMDL 1
1 2
1
1 22
22 STOPDriver Side J/B
G±W (*4) G±W (*4)
G±W (*3)
G±W (*3)6
IE3
IE3 IR12
11
R±W (*3) R±W (*4) R±W (*4)
R±W (*3) S13
Stop Light SW
G±W
G±W
B±G (*1)
STP
123 ALT Engine Room R/B No.3
W (*2)
ED11 12
J/C
J30B
(*5) (*6) (*7) (*5) (*6) (*7)
(*5) (*6) (*7) (*5) (*6) (*7)STOP
STOP J31CJ32
J/C
B (*2)
W±B (*5) G±W (*5) W±B (*5)
W±B
W±B
W±B
(*5)
CC2 1
R13
R14 R14 R14 R14 R14 R14R13 R13 R13 R13 R13J30
J30
J30 J31
J31 21
1 54 64
4 7 3
3 3 6
G±WJ/C
C
C
C B B
G±W G±W
G±W (*6, *7)
BG1Rear Combination Light LHH20
High Mounted Stop Light
N8
Noise
Filter
(Stop Light) Rear Combination Light RH
H20 High Mounted
Stop Light
W±B (*7)
W±B (*7)G±W (*7)
W±B (*7) W±B (*7) W±B (*6)W±B (*6)G±W (*6)
W±B (*6, *7)
W±B (*6, *7)
W±B
(*6) (*7)W±B (*6)
W±B (*6)
J33 J34AAJ/C1 2BE1
BD1 BF113
G±W L(*6)
L(*7)
BD1 BF1(*6) (*7)(*6, *7)
G±W
(*6, *7)
1
BX BE1 BG1 41
2 3
24
BT BS Battery
*1: Gasoline
*2: 1CD±FTV
*3: LHD
*4: RHD*5: S/D
*6: L/B
*7: W/G
± DIAGNOSTICSABS WITH EBD SYSTEM
05±731
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM