Page 179 - Foton Workshop Manual - Tunland (AT)

DIAGNOSTICS - ANTI-LOCK BRAKING SYSTEM (ABS) 04-33

C190004，C190104-ECU SUPPLY VOLTAGE FAULT

C190004-ECU THE SUPPLY VOLTAGE IS TOO HIGH
C190104-ECU THE SUPPLY VOLTAGE IS TOO LOW

Circuit Diagram

04
Ignition switch
ON or START

F26
1 0A

O-R
C101
1
A301

28
ABS controller IG power
ABS/ESP
A006

Ground Motor ground
13 38

B B

A7

ftwxd041433

Diagnostic step

NOTICE

• To implement the following steps, ensure that ABS/ESP is grounded properly.
• Before conducting electric diagnosis, do refer to the reference circuit diagram
and the element information.

• Before conducting measurement, check the pins of connectors for rupture,
looseness and rust, and ensure that the pins are contacted properly.
• If the connection is good, check the sensor signal voltage when moving the
connector and harness. If a fault occurs, the voltage display on the diagnostic
instrument will change.

1 . DTC inspection

Page 179