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4 - 12 V (green - black/yellow)
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8 - 12 V (yellow - blue/yellow)
THE CONNECTION DIAGRAMS ARE IN THE ELECTRICAL SYSTEM SECTIONS; PAY ATTENTION
TO THESE DIAGRAMS AS THEY SHOW THE CONNECTOR/COMPONENT AS VIEWED FROM
THE CABLE HARNESS SIDE, THAT IS LOOKING AT THE CABLES WHEN GOING OUT OF THE
"MAIN" CABLE HARNESS AND INTO THE CONNECTOR/COMPONENT.
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
AXONE / AUTOMATIC TRANSMISSION system
STATUSES
Pedal gear upshift control
Example value:
Released/Pressed/Invalid data
If the "Invalid Data" message is displayed, it means that a malfunction has been detected
Pedal gear downshift control
Example value:
Released/Pressed/Invalid data
If the "Invalid Data" message is displayed, it means that a malfunction has been detected
NOTE:
When troubleshooting, use the interface, code 020481Y, with the adaptor, code 020481Y004.
The correspondence between the control unit PIN and the interface PIN is the following: control unit
PIN A1….A8 and interface PIN interface 11….18, control unit PIN B1….B8 and interface PIN interface
21….28, control unit PIN C1….C8 and interface PIN interface 31….38.
ERRORS
Pedal gear upshift control - Code 900D
- signal not valid for logic reasons/ blocked control.
Error cause
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If the electric signal is not valid due to a logic reason: the control unit detects no voltage or
the same voltage as the other at PIN A3 or PIN A7. If the control is blocked: the control has
been in the pressed position for too long (some minutes).
Troubleshooting
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If the electric signal is not valid due to a logic reason: the transmission ECU waits to detect
a voltage above approximately 1V in one of the two PINS and at the same time, a voltage
below approximately 1 V in the other PIN; if this does not happen, the control unit signals
this error. CASE 1) If voltage is below 1V on both, with control not activated, it means that
a voltage below 1V, instead of battery, is detected at PIN A3; disconnect the gearshift control
connector and read voltage at PIN A3: if voltage is below 1 V, it means that on the blue/
yellow cable there is a short circuit to ground; if voltage is above 1 V (approximately battery
voltage), replace the gear upshift control sensor. CASE 2) if both voltages are below 1 V
with control activated, it means that at that moment a voltage below 1 V, instead of battery,
is detected at PIN A7; disconnect the gearshift control connector and read voltage at PIN
Electrical system
MSS Mana GT ABS
ELE SYS - 130
Summary of Contents for MSS Mana GT ABS
Page 1: ...SERVICE STATION MANUAL 894171 MSS Mana GT ABS ...
Page 5: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Page 26: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Page 38: ...Stores code Description 020881Y Panel graphics Special tools MSS Mana GT ABS S TOOLS 38 ...
Page 39: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Page 46: ...INDEX OF TOPICS TROUBLESHOOTING TROUBL ...
Page 57: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Page 149: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Page 164: ...Engine from vehicle MSS Mana GT ABS ENG VE 164 ...
Page 165: ...INDEX OF TOPICS ENGINE ENG ...
Page 230: ... Undo the two screws and remove the oil pump cover Engine MSS Mana GT ABS ENG 230 ...
Page 266: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Page 268: ...Power supply MSS Mana GT ABS P SUPP 268 ...
Page 269: ...MSS Mana GT ABS Power supply P SUPP 269 ...
Page 270: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Page 314: ...INDEX OF TOPICS CHASSIS CHAS ...
Page 320: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Page 347: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Page 362: ...INDEX OF TOPICS BODYWORK BODYW ...