DAF LF45, LF55 Series. Instruction - page 15
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1
Contents
AS TRONIC
DAVIE XD diagnostics manual
3
3 AS Tronic
CONTENTS
Page
Date
1.2
2.2
2.3
AS TRONIC
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Contents
3
DAVIE XD diagnostics manual
©
1-1
AS Tronic fault codes
AS TRONIC
DAVIE XD diagnostics manual
3
1. AS TRONIC FAULT CODES
1.1 INTRODUCTION
If the electronic unit detects a system fault, this
fault is usually stored in the memory of the
electronic unit as a fault code.
Most system faults will also generate a warning.
AS TRONIC
1-2
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AS Tronic fault codes
3
DAVIE XD diagnostics manual
1.2 EXPLANATORY NOTES TO AS TRONIC FAULT CODES
Fault code
Fault code description with possible cause
Symptom
84
Incorrect or missing vehicle speed signal via
message on CAN network
-
In automatic mode the gearbox may shift
down early or late
-
No further system limitation
-
Automatic mode available
86
Incorrect or missing cruise control signal via
message on CAN network, with the cruise control
function being active
-
In automatic mode the gearbox may change
gears accidentally during the cruise control
function
-
No noticeable system limitation
91
Incorrect or missing accelerator pedal position
signal via message on CAN network
When driving:
-
shifting quality may be affected
-
automatic mode not available
At standstill:
-
driving off from a stationary position is
possible
-
drive off and manoeuvring quality may be
affected
92
Incorrect or missing percentual engine torque
signal at current speed via message on CAN
network
-
No noticeable system limitation
-
Automatic mode available
158
Excessive modulator supply voltage:
-
pin A4 / A5
When driving:
-
no noticeable system limitation
-
automatic mode available
At standstill:
-
if this fault is present before switching on the
ignition, the gearbox will not leave the self-
test cycle. It is not possible to drive off.
Insufficient modulator supply voltage:
-
pin A4 / A5
When driving:
-
no gear changes possible
At standstill:
-
automatic mode not available
-
no gear changes possible
-
if a gear has been engaged, the modulator
will shift the gearbox to neutral when the
ignition is switched off
190
Incorrect or missing engine speed signal via
message on CAN network
When driving:
-
clutch is closed in a time-controlled fashion,
which results in abrupt clutching
-
automatic mode not available
At standstill:
-
when driving off in the manoeuvring position,
the clutch is operated in a time-controlled
fashion, which results in abrupt clutching