DAF CF65, CF75, CF85 Series . Manual - part 15

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Contents

AS TRONIC

DAVIE XD diagnostics manual 

3

3 AS Tronic

CONTENTS

Page

Date

1.

1.2

2.

2.2

2.3

AS TRONIC

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Contents

3

DAVIE XD diagnostics manual

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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

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AS Tronic fault codes

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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