Page 2555 - Foton Workshop Manual - Sauvana

DIAGNOSIS-SERVICE BRAKING SYSTEM 62-503

Diagnosis steps

1. Check fuse

(a). Ignition switch:"LOCK".
62

(b). Check the fuse in fuse box within engine
room：:F15(40A)、F17(25A),Internal fuse
Disconnect Normal
box Fuse :F26(10A).

fuwx62253

Check if the fuse is well?
YES> To step 2.
NO> Replace the fuse.

2. Check ESP ECU power supply circuit

(a). Ignition switch:"LOCK".

(b). Disconnect the ESP ECU A08 connector .
(c). Use a multimeter to measure the voltage
OFF
v between pin 1 and 25 of the ESP ECU A08
connector and the ground.
Standard Voltage:( Check for open circuit)
A08
8 5 4 1
19 18 17 16 14 Multimeter
25 Standard value
connection pin
31 30 29 28 26
fuwx62992
A08 (1) - Grounding BATTERY VOLT
A08 (25) - Grounding BATTERY VOLT

(d). Ignition switch:"ON".
ON
(e). Use a multimeter to measure the voltage
T.S
between pin 28 of the ESP ECU A08
A08
connector and the ground.
8 5 4 1
19 18 17 16 14 Standard Voltage:( Check for open circuit)
25
v
31 30 29 28 26
Multimeter
connection pin Standard value
fuwx62993
A08 (28) - Grounding BATTERY VOLT

Page 2555