2005 TOYOTA AVENSIS warning

B67601
Theft Warning ECU Assy Combination Meter Assy
(Combination Meter ECU) A/C Control Assy
(A/C ECU)Instrument Panel J/B Assy
(Integration Relay)
ECM
E9*1 or E10*2C10
05±1676
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5 CHECK WIRE HARNESS (COMBINATION METER ECU ± ECM)
(a) Check whether the output of the DTC stops when the E10*1or E9*2 connector of the ECM and the C10
connector of the combination meter ECU are disconnected.
HINT:
When the output of the DTC stops, the wire harness between the E10*
1 or E9*2 connector of the ECM and
the C10 connector of the combination meter ECU is malfunctioning.
*
1: 1AZ±FSE
*
2: Except 1AZ±FSE
YES REPAIR OR REPLACE HARNESS AND
CONNECTOR
NO

B67972
Theft Warning ECU Assy Combination Meter Assy
(Combination Meter ECU) A/C Control Assy
(A/C ECU)Instrument Panel J/B Assy
(Integration Relay)
ECM
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1677
AVENSIS REPAIR MANUAL (RM1018E)
6 CHECK DTC (A/C ECU)
(a) Check whether the output of the DTC stops when the A/C ECU connector is disconnected.
HINT:
When the output of the DTC stops, the A/C ECU is malfunctioning.
YES REPLACE AIR CONDITIONING CONTROL ASSY
(A/C ECU)
NO

B67973
Theft Warning ECU Assy Combination Meter Assy
(Combination Meter ECU) Air Conditioning Control Assy
(A/C ECU)Instrument Panel J/B Assy
(Integration Relay)
ECM
E9*3 or E10*4A13*1 or A15*2
05±1678
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
7 CHECK WIRE HARNESS (A/C ECU ± ECM)
(a) Check whether the output of the DTC stops when the A13*1 or A15*2 connector of the A/C ECU and
the E10*
3 or E9*4 connector of the ECM are disconnected.
HINT:
When the output of the DTC stops, the wire harness between the
A13*1 or A15*2 connector of the A/C ECU
and the E10*
3 or E9*4 connector of the ECM is malfunctioning.
*
1: Except Automatic A/C
*
2: Automatic A/C
*
3: 1AZ±FSE
*
4: Except 1AZ±FSE
YES REPAIR OR REPLACE HARNESS AND
CONNECTOR
NO

B67602
Theft Warning ECU Assy Combination Meter Assy
(Combination Meter ECU) A/C Control Assy
(A/C ECU)Instrument Panel J/B Assy
(Integration Relay)
ECM
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1679
AVENSIS REPAIR MANUAL (RM1018E)
8 CHECK WIRE HARNESS
(INTEGRATION RELAY ± A/C ECU)
(INTEGRATION RELAY ± COMBINATION METER ECU)
(a) Disconnect the A/C ECU, combination meter ECU and integration relay connectors.
(b) Check the wire harness (MPX lines) between the integration relay and A/C ECU as well as in between
the integration relay and combination ECU.
(1) Turn the ignition switch ON.
(2) Check the voltage between the wire harness (MPX lines) and the body ground.
Standard:
Tester ConditionSpecified Condition
Integration relay or A/C ECU ± Body ground0VIntegration relay or combination meter ECU ± Body ground0 V
If the output voltage is not 0 V, the wire harness (MPX line) may be short±circuited with +B.
(3) Check the resistance between the wire harness (MPX lines) and the body ground.
Standard:
Tester ConditionSpecified Condition
Integration relay or A/C ECU ± Body ground10 kor higherIntegration relay or combination meter ECU ± Body ground10 kor higher
When the resistance is 10 kor higher, the wire harness (MPX line) and body ground may be short±circuited
with the body ground.
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY (INTEGRATION RELAY)

B69311
T6
C10 Combination Meter Assy
(Combination Meter ECU)Theft Warning ECU Assy
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
05±1667
AVENSIS REPAIR MANUAL (RM1018E)
(a) Disconnect the A15, A16 ECU, E9 or E10 ECM and I14 J/B connectors.
(b) Check the voltage or resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.)Wiring ColorConditionSpecified Condition
GND (A16±13) ±
Body groundW±B ± Body groundConstantBelow 1

+B (A16±24) ±
GND (A16±13)W±R ± W±BConstant10 to 14 V
MPX± (A15±20) ±
MPX1 (I14±11)P ± P
*1
MPX+ (A15±10) ±
MPX2 (E10±29)P±B ± P±B
ConstantBelow 1
*2
MPX+ (A15±10) ±
MPX2 (E9±29)P±B ± P±B
ConstantBelow 1

*3
MPX+ (A15±10) ±
MPX2 (E9±21)P±B ± P±B
HINT:
*
1: 1AZ±FSE
*
2: 1AZ±FE, 1ZZ±FE, 3ZZ±FE
*
3: 1CD±FTV
If the result is not as specified, there may be a malfunction on the wire harness side.
7. CHECK THEFT WARNING ECU ASSY
(a) Disconnect the T6 and C10 ECU connectors.
(b) Check the voltage or resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.)Wiring ColorConditionSpecified Condition
E (T6±29) ±
Body groundW±B ± Body groundConstantBelow 1

+B1 (T6±2) ± E (T6±29)W±R ± W±BConstant10 ± 14 V
MPX (T6±31) ±
BEAN (Security)(C10±15)P±L ± P±LConstantBelow 1

If the result is not as specified, there may be a malfunction on the wire harness side.

B67985
ECM (1AZ±FSE)
ECM (1AZ±FE, 1ZZ±FE, 3ZZ±FE)
ECM (1CD±FTV)
E9 E10
E9
T6 Theft Warning ECU Assy Combination Meter Assy (Conbination Meter ECU)
C11 C10
I14 Instrument Panel J/B Assy (Integration Relay)
05±1668
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
8. CHECK COMBINATION METER ASSY (COMBINATION METER ECU)

B67413
RHD Models LHD Models
Integration Relay Instrument Panel J/B Assy
Instrument Panel J/B Assy
Integration Relay
ECM
A/C Control Assy
(A/C ECU)
ECM
Theft Warning ECU Assy
A/C Control Assy
(A/C ECU) Combination Meter Assy
Combination Meter ECU
Center J/B
Fuse Block Assy
ECU±B 2 Fuse
Dome Fuse
Combination Meter Assy
Combination Meter ECU
Center J/B
Fuse Block Assy
ECU±B 2 Fuse
Dome Fuse
05±1658
± DIAGNOSTICSMULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)

05AEQ±02
05±1656
±
DIAGNOSTICS MULTIPLEX COMMUNICATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit\
listed for that code in the chart
below (Proceed to the page given for that circuit).
DTC No.
(See Page)Detection ItemTrouble Area
B1214
(05±1670)Door System Communication Bus Malfunction (+B Short)

Wire harness

ECM

A/C control assy (A/C ECU)

Theft warning ECU assy

Combination meter assy (Combination meter ECU)

Instrument panel J/B assy (Integration relay)
B1215
(05±1670)Door System Communication Bus Malfunction (GND Short)

Wire harness

ECM

A/C control assy (A/C ECU)

Theft warning ECU assy

Combination meter assy (Combination meter ECU)

Instrument panel J/B assy (Integration relay)
B1261
(05±1680)ECM Communication Stop
Wire harness

ECM
B1262
(05±1685)A/C ECU Communication Stop
Wire harness

A/C assy (A/C ECU)
B1269
(05±1689)Theft Deterrent ECU Communication Stop
Wire harness

Theft warning ECU assy
B1271
(05±1693)Combination Meter ECU Communication Stop
Wire harness

Combination meter assy (Combination meter ECU)