Range Rover Automatic Transmission. Manual — part 14
System Information Document
____________________________________________________________________________________________________
_
[ZF_4SPD\Project_Specs]
[Revision: 2.3]
____________________________________________________________________________________________________
_
© Rover Group 1998
Page 27 of 52
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
25
Solenoid valve for TC (short circuit to - or open circuit)
P0743
N_MOT
AN8
UBATT
Pin 32 (Solenoid valve for torque convertor lockup) is either short circuit to 0V or open circuit.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
Torque converter = locked
Time between fault present & fault stored:
20 ms
Variables used by the diagnostic:
Status of torque converter drive, Battery voltage
Will limp home mode be selected:
Yes
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
26
Solenoid valve 1 (line short circuit to - or open circuit)
P0753
N_MOT
AN6
UBATT
Pin 30 (Solenoid valve 1) is either short circuit to 0V or open circuit.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
Solenoid valve 1 = on
Time between fault present & fault stored:
20ms
Variables used by the diagnostic:
Status of Solenoid valve 1, Battery voltage
Will limp home mode be selected:
Yes
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
27
Solenoid valve 2 (line short circuit to - or open circuit)
P0758
N_MOT
AN7
UBATT
Pin 33 (Solenoid valve 2) is either short circuit to 0V or open circuit.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
Solenoid valve 2 = on
Time between fault present & fault stored:
20 ms
Variables used by the diagnostic:
Status of Solenoid valve 1, Battery voltage
Will limp home mode be selected:
Yes
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
28
Pressure regulator (line short circuit to - or open circuit)
P0748
N_MOT
VGT_$X
UBATT
Pin 5 (pressure regulator) is either short circuit to 0V or open circuit.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
20 ms
Variables used by the diagnostic:
Status of low side pressure regulator driver
Will limp home mode be selected:
Yes
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
29
Gear ratio monitoring, 1st gear
P0731
N_MOT
VGT_$X
MMM
Ratio of engine speed to output shaft speed whilst 1st gear is engaged is out of range.
Diagnostic operates:
NAS vehicles only, Continuously
Conditions to be met to run Diagnostic:
1
st
gear selected, gear shift not in progress
Time between fault present & fault stored:
800 ms
Variables used by the diagnostic:
Engine Speed, Engine Torque, Output shaft speed, Selected gear
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
System Information Document
____________________________________________________________________________________________________
_
[ZF_4SPD\Project_Specs]
[Revision: 2.3]
____________________________________________________________________________________________________
_
© Rover Group 1998
Page 28 of 52
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
30
Gear ratio monitoring, 2nd gear
P0732
N_MOT
VGT_$X
MMM
Ratio of engine speed to output shaft speed whilst 2nd gear is engaged is out of range.
Diagnostic operates:
NAS vehicles only, Continuously
Conditions to be met to run Diagnostic:
2
nd
gear selected, gear shift not in progress
Time between fault present & fault stored:
800 ms
Variables used by the diagnostic:
Engine Speed, Engine Torque, Output shaft speed, Selected gear
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
31
Gear ratio monitoring, 3rd gear
P0733
N_MOT
VGT_$X
MMM
Ratio of engine speed to output shaft speed whilst 3rd gear is engaged is out of range.
Diagnostic operates:
NAS vehicles only, Continuously
Conditions to be met to run Diagnostic:
3
rd
gear selected, gear shift not in progress
Time between fault present & fault stored:
800 ms
Variables used by the diagnostic:
Engine Speed, Engine Torque, Output shaft speed, Selected gear
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
32
Gear ratio monitoring, 4th gear
P0734
N_MOT
VGT_$X
MMM
Ratio of engine speed to output shaft speed whilst 4th gear is engaged is out of range.
Diagnostic operates:
NAS vehicles only, Continuously
Conditions to be met to run Diagnostic:
4th gear selected, gear shift not in progress
Time between fault present & fault stored:
800 ms
Variables used by the diagnostic:
Engine Speed, Engine Torque, Output shaft speed, Selected gear
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
33
CAN message MD_IND invalid, indicated by F_TL_MES
P1884
N_MOT
VGT_$X
MMM
The CAN message from the engine management controller which informs the transmission of the engine torque is invalid.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
CAN message F_TL_MES
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
34
CAN message MD_IND invalid (FFh)
P1884
N_MOT
VGT_$X
MMM
The CAN message from the engine management controller which informs the transmission of the engine torque is invalid.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
CAN message MD_IND
Will limp home mode be selected:
No, substitute engine torque used.
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
System Information Document
____________________________________________________________________________________________________
_
[ZF_4SPD\Project_Specs]
[Revision: 2.3]
____________________________________________________________________________________________________
_
© Rover Group 1998
Page 29 of 52
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
35
CAN message N_MOT invalid, indicated by F_N_MOT
P1884
N_MOT
VGT_$X
MMM
The CAN message from the engine management controller which informs the transmission of the engine speed is invalid.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
CAN message F_N_MOT
Will limp home mode be selected:
Yes
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
99MY Range Rover only, Discovery Series II dummy code.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
36
Transmission calibration selection incorrect / invalid
P1602
N_MOT
VGT_$X
MMM
An ECU has been fitted to a vehicle an not had the correct calibration selected, or no calibration has been selected.
Diagnostic operates:
During initialisation
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
Tune select status
Will limp home mode be selected:
No, default shift maps used (normally 4.0l calibration)
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
37
CAN message T_ANS invalid (FFh).
P1884
N_MOT
VGT_$X
MMM
The CAN message which informs the transmission of the air intake temperature is invalid.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
CAN message T_ANS
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
38
CAN message FHOEHE invalid (FFh).
P1884
N_MOT
VGT_$X
MMM
The CAN message used to control the special altitude shift patterns is not correct.
Diagnostic operates:
Continuously
Conditions to be met to run Diagnostic:
None
Time between fault present & fault stored:
10 ms
Variables used by the diagnostic:
CAN message FHOEHE
Will limp home mode be selected:
No
Conditions to be met to clear the fault:
Ignition to be switched on whilst fault not present, engine cranked.
Fault
Description
CARB
Ambient 1
Ambient 2
Ambient 3
39
Range switch plausibility error
P1705
N_MOT
VGT_$X
MMM
The input received from the range switch input cannot be correct. This may be due to not moving the lever fully, not
necessarily a faulty switch
Diagnostic operates:
Conditions to be met to run Diagnostic:
Road speed > 5km/h
Time between fault present & fault stored:
50 ms
Variables used by the diagnostic:
O/P shaft speed, Road speed (V3), Range Switch status
Will limp home mode be selected:
Conditions to be met to clear the fault:
System Information Document
____________________________________________________________________________________________________
_
[ZF_4SPD\Project_Specs]
[Revision: 2.3]
____________________________________________________________________________________________________
_
© Rover Group 1998
Page 30 of 52
5.3 Impact on the system of each fault
Settings are those for Range Rover, 99MY (Software release L944e1414, 4.0l & 4.6l V8, NAS only)
Priority
Control
Byte 2 – Protection & Default
Byte 1 – Protection & Default
Fault Number
Priority Byte
Control Byte
Byte 1 - Protection & default
Byte 2 - Protection & default
Priority level (0 – 7, Bits 5 – 7
MIL on with activation of substitute function
Diagnostic function enable
Delete error after 40 warm-up cycles
Fault is CARB relevant
Filtering depends on time
Filter counter not changed if test not fulfilled
After cranking, return to normal function if fault still present
Not used
Return to normal function in operation if error not present
Limphome
Max pressure
Flash Sport and Manual lights (Gearbox fault message in RR)
No
Kickdown
Substitute throttle angle
Use calculate range, not Range switch input
Substitute engine temperature
Only E program allowed
Substitute engine torque
No
adapitve pressure control
No adaptive shift point control
Maintain current gear in low range / Limphome in High
No CAN communication
No gear and lockup diagnostics
Don’t change status of MES line driver outputs
No Hot / High shift point & pressure
adaption
1
224 244 32
7
7
1
1
1
1
1
1
1
1
1
2
224 244 32
7
7
1
1
1
1
1
1
1
1
1
3
225 244
0
0
7
1
1
1
1
1
1
4
224 240 32
7
7
1
1
1
1
1
1
1
1
5
96 244 32
0
3
1
1
1
1
1
1
6
224 244 32
7
7
1
1
1
1
1
1
1
1
1
7
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
8
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
9
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
10
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
11
96 244 164
0
3
1
1
1
1
1
1
1
1
12
0
212 64
0
0
1
1
1
1
1
13
0
212 64
0
0
1
1
1
1
1
14 224 252 40
6
7
1
1
1
1
1
1
1
1
1
1
15 224 244 56
6
7
1
1
1
1
1
1
1
1
1
1
16 224 228 40
6
7
1
1
1
1
1
1
1
1
17 224 236 40
6
7
1
1
1
1
1
1
1
1
1
18
96 244 166 156
3
1
1
1
1
1
1
1
1
1
1
1
1
1
19
96 212
0
64
3
1
1
1
1
1
20
96 212
0
0
3
1
1
1
1
21
96 244 40
6
3
1
1
1
1
1
1
1
1
1
22
96 244 40
6
3
1
1
1
1
1
1
1
1
1
23
96 244 40
6
3
1
1
1
1
1
1
1
1
1
24
96 244 40
6
3
1
1
1
1
1
1
1
1
1
25
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
26
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
27
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
28
96 252 32
7
3
1
1
1
1
1
1
1
1
1
1
29
96 244 32
0
3
1
1
1
1
1
1
30
96 244 32
0
3
1
1
1
1
1
1
31
96 244 32
0
3
1
1
1
1
1
1
32
96 244 32
0
3
1
1
1
1
1
1
33
96 244 164
0
3
1
1
1
1
1
1
1
1
34
96 244 165
0
3
1
1
1
1
1
1
1
1
1
35
96 244 40
6
3
1
1
1
1
1
1
1
1
1
36
96 244
0
4
3
1
1
1
1
1
1
37
96 212 128
0
3
1
1
1
1
1
38
96 212 128
0
3
1
1
1
1
1
39
0
0
0
0
0
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