281

  6    DTC 00668

Likely Causes

[Description]

When power supply terminal 30

does not supply the voltage or the voltage is too

high, this DTC is set.

  ABS system fuse is broken

  Battery Voltage too low or high

  ABS wire harness connector is damaged

  ABS ECU is damage

d

Check the ABS system 50A fuse

Disconnect the ABS wire harness from the

ECU, turn the ignition switch to ON, mea-

sure the voltage among the following termi-

nals of the ABS wire harness

Terminal 8 and 9    9.5-16.5V

Terminal 24 and 25  9.5 - 16.5V

Terminal 8 and 4    9.5 -16.5V

 

 

Check the ABS wire harness connector

Retest. Abn. again?

Check the Battery voltage

 

 

Refer to "Occasional Problem

Service Key Points"

Replace the ABS ECU

Abn.

Abn.

 Ok

  Ok

  Ok

 Yes

 No

Replace the fuse

Repair the connector

 Abn.

282

  7    DTC 01130

Likely Causes

[Description]

When ABS is affected by high

frequency electromagnetic wave or the micro-

processor determines that the input vehicle

speed is suspect, this DTC is set

  High frequency electromagnetic wave interference

  Damaged sensor or its wire harness

  Damaged ABS ECU

Replace the ABS ECU

Check the sensor output voltage

 

Check the wire harness between

the ECU and the sensor

Replace the sensor

Abn.

Ok

  No

Check the sensor

 

Ok

283

II. Non-DTC Problem Inspection Table

1   With ignition switch ON (Engine Off),

the ABS warning light does not go on

Likely Causes

[Description]

 ABS Warning Light does not go

on, the likely cause may be the open in the

warning light power supply circuit, burned bulb

or damaged warning light drive module.

  Burned fuse

  ABS Warning Light Bulb burned

  Power supply circuit open

  ABS Warning Light Drive Module damaged

Check the ABS warning light

fuse in the fuse block

Remove the ECU connector,

does the warning light goes on

with the ignition switch ON?

 

 

Check whether the ABS

warning light is burned

Check whether the warn-

ing light power supply cir-

cuit and ground circuit in the

wire harness is open

Check the connector of the

warning light power supply

circuit and ground circuit in

the wire harness

 

 

 

Does the fault reoccur?

Abn.

Replace

Repair the wire harness

No

Yes

Abn.

Abn.

  Ok

  Yes

  No

  Ok

  Ok

Replace

Repair the wire

harness

Repair the connector

Check whether the wire in the

ABS wire harness connecting

the ABS warning light drive

module and the ECU is short

to ground

 

  Yes

 

Replace the warning light

drive module

  Yes

No

Refer to "Occa-

sional Problem

Service Key Points"

284

Note: This fault only applies to the condition that the system can communicate with the scan

meter (ABS ECU Power supply is normal), and there is no DTC set.

 2   After the engine is started, ABS

Warning Light is normally on

Likely Causes

[Description]

 One of the Likely Causes is that

ABS warning light drive module is damaged or

there is an open in the ABS warning light

circuit.

  The warning light drive module is damaged

  ABS warning light drive module circuit open

  ABS ECU is damaged

Repair the wire harness

Check whether there is an open circuit in the wire be-

tween the ECU and ABS warning light drive module

 

Check the ABS warning light drive module

Replace

Abn.

No

  Yes

 

Replace the ABS ECU

Ok