3-56
DRIVE-CONTROL
COMPONENTS
-
ABS
<AWD>
Diagnostic Trouble Codes
Conditions detected as a result of diagnosis are
associated with a total of 14 codes including that
for normal state, and the codes are stored in the
volatile memory.
Even if the ignition key is placed in the “OFF”
posi-
tion, the contents of the memory are not cleared,
as the memory remains powered by a backup power
supply.
These codes are readable by connecting the scan
tool.
When the scan tool is not used, they are also
read-
able with a voltmeter which deflects in a pattern
unique to each code.
1. Diagnostic items, diagnostic codes and detection condition
Detection
Code No. display
Inspection item
condi-
on Scan tool
Diagnostic content
tions
A B
11*’
Front right wheel speed sensor
12*’
Front left wheel speed sensor
13*’
Rear right wheel speed sensor
Open circuit or short in
+
wire
x x
14*’
Rear left wheel speed sensor
15*’
Wheel speed sensor system
Abnormal output signal
X
21
G sensor
Broke wire in G sensor or OFF mal-
function
X
22*2
Stop light switch system
Open circuit or ON malfunction
X
41
Front left solenoid valve
No response to solenoid valve drive
42
Front right solenoid valve
signal
X
43
51
53*3
55
No fault code
displayed
Rear solenoid valve
Valve relay
Motor relay or Motor
ABS-ECU
(The system is in order)
Current value in both valves is differ-
ent when in same mode
X
Valve relay OFF failure
x x
Motor relay OFF failure and motor
drive failure
X
ABS-ECU internal failure (program
maze, etc)
x
x
Detection conditions
A: During system check immediately after staritng
B: During operation
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