Etacs system error

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ETACS

CHASSIS ELECTRICAL

54A-495

NOTE:

.

•

*1

: There is no «stored» state for diagnosis code

No.B1707, No.B1760, No.B1762, No.B1765.

•

*2

: When the diagnosis codes relating to the CAN

or LIN communication error are set, make sure of
the vehicle equipment. When the vehicle is not

equipped with the system the ETACS-ECU com-
municates to, the diagnosis code is always out-
put. This is not abnormal.

B1707

*1

Flasher timer

Detection of turn-signal lamp (open circuit)

P.54A-95

B1709

ETACS-ECU internal error (EEPROM abnormality)

P.54A-496

B1760

*1

Variant coding unmatched

P.54A-496

B1762

*1

Ignition OFF current draw (IOD) fuse disconnected

P.54A-497

B1765

*1

ECU power supply fuse disconnected

B1763

Column switch

Column switch abnormality (lighting switch)

P.54A-224

B1764

Column switch abnormality (wiper switch)

U1073

CAN
communication

Bus off

P.54A-501

U1100

Engine-ECU time-out (related to engine)

P.54A-501

U1101

*2

A/T-ECU time-out (related to A/T)

U1102

*2

ABS-ECU or ASTC-ECU Timeout

P.54A-503

U1110

*2

A/C-ECU Timeout

P.54A-504

U1111

*2

RV Meter time-out

P.54A-506

U1150

Vehicle speed failure information

P.54A-507

U1507

LIN
communication

ETACS-ECU LIN communication error

Refer to GROUP
54B

− Diagnosis

Code Chart .

U1504

*2

Lighting control sensor LIN timeout <Vehicles with
auto lamp>

U1500

Column-ECU time-out

U1508

*2

Power window main switch time-out

U1509

*2

Power window sub switch (AS) time-out

U1510

*2

Power window sub switch (RL) time-out

U1511

*2

Power window sub switch (RR) time-out

U1512

*2

Rear panel power window-ECU time-out

U1530

Column-ECU checksum error

U1532

*2

LIN comm. lighting control sensor <Vehicles with
auto lamp>

U1534

*2

Power window main switch checksum error

U1535

*2

Power window sub switch (AS) checksum error

U1536

*4

Power window sub switch (RL) checksum error

U1537

*2

Power window sub switch (RR) checksum error

U1538

*2

Rear panel power window-ECU checksum error

U1570

No bus activity error for LIN

Code No.

Diagnostic item

Reference page

ETACS

CHASSIS ELECTRICAL

54A-496

DIAGNOSIS CODE PROCEDURES

Code No. B1709: ETACS-ECU internal error (EEPROM abnormality)

COMMENTS ON TROUBLE SYMPTOM
If an error is detected more than once during the
reading from/writing to the EEPROM of the ETACS-
ECU, the ETACS-ECU stores the diagnosis code No.
B1709.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

Check whether the diagnosis code is reset.
Check if diagnosis code is set to the ETACS-ECU.

Q: Is the diagnosis code set?

YES :

Replace the ETACS-ECU and register the

ID codes (Refer to

P.54A-39

).

NO :

The procedure is complete.

Code No. B1760: Variant coding unmatched

COMMENTS ON TROUBLE SYMPTOM
If any abnormality is found in the contents of the vari-
ant coding that is registered to the ETACS-ECU, the
diagnosis code No. B1760 is stored.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

DIAGNOSIS PROCEDURE

Check whether the diagnosis code is reset.
Check again if the diagnosis code is set to the
ETACS-ECU.
(1) Erase the diagnosis code.

(2) Turn the ignition switch from «LOCK» (OFF)

position to «ON» position.

(3) On completion, check that the diagnosis code is

reset.

Q: Is the diagnosis code set?

YES :

Replace the ETACS-ECU and register the

ID codes (Refer to

P.54A-39

).

NO :

The procedure is complete.

ETACS

CHASSIS ELECTRICAL

54A-497

Code No.B1762: Ignition OFF current draw (IOD) fuse disconnected

Code No.B1765: ECU power supply fuse disconnected

COMMENTS ON TROUBLE SYMPTOM

• With the ignition switch «ON» or «START,» when

the OFF condition (fuse disconnected) of the bat-
tery and ignition switch (ACC) is detected,
ETACS-ECU stores the diagnosis code No.
B1762.

• With the ignition switch «ON» or «START,» when

the ON condition (fuse disconnected) of the bat-
tery and ignition switch (ACC) is detected,
ETACS-ECU stores the diagnosis code No.
B1765.

PROBABLE CAUSES

• Malfunction of the IOD fuse (No.25)

• Malfunction of the ECU power supply fuse

(No.26)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check of the fuse
Check the fuse (No. 25 or 26).

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Perform the inspection for a blown fuse
(Refer to GROUP 00

− How to Use

Troubleshooting/Inspection Service Points

−

Inspection Service Points for a Blown Fuse
). Repair the fuse, and then go to Step 5 .

Fuse No.25 and No.26 Circuit

FUSIBLE
LINK

POWER
SOURCE

ETACS-
ECU

20

IGNITION
SWITCH (ACC)

J/B SIDE

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple SI : Silver

ETACS

CHASSIS ELECTRICAL

54A-498

STEP 2. Connector check: C-218 ETACS-ECU
connector, C-219 ETACS-ECU connector

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector. Go to Step
5.

AC509935

Connectors: C-218, C-219 <LHD>

AM

Junction block side

C-218

C-218

C-219 (GR)

Harness side

C-219

AC903958

Connectors: C-218, C-219 <RHD>

AB

Junction block side

C-218

C-218

C-219 (GR)

Harness side

C-219

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