LR3/Disco 3
DIAGNOSTICS
The diagnostic socket is located in the lower instrument panel closing panel, on the driver's side, below the steering
column.
The diagnostic socket allows the exchange of information between the various modules on the bus systems and T4 or a
diagnostic tool using ISO14229 protocol. The information is communicated to the socket via the high speed CAN bus from
the TCM. This allows the retrieval of diagnostic information and programming of certain functions using T4 or a suitable
diagnostic tool.
The TCM uses a P code strategy which stores industry standard Diagnostic Trouble Codes (DTC) relating to faults.
16
Ground 2
-
P Code
Component/Signal
Fault Description
P012100
Kickdown
Signal not plausible
P021900
Stall speed/engine overspeed
Signal not plausible
P050000
Wheel speeds plausible signal
General fault type
P050100
Wheels speeds plausible signal
Signal not plausible
P056100
Power supply (battery)
General fault type
P056200
Power supply (battery)
Signal voltage too low
P056300
Power supply (battery)
Signal voltage too high
P060100
EPROM/FLASH Checksum
Signal not plausible
P060300
Battery buffered RAM
Signal not plausible
P060500
EPROM/FLASH Checksum after
software verification
Signal not plausible
P061300
Watchdog locking mechanism
General fault type Signal not plausible Short circuit to power supply
Short circuit to ground Circuit break Short circuit to ground or power
break Signal voltage too high Signal voltage too low Function specific,
see monitoring function
P061300
Micro controller components
General fault type No change in signal Function specific, see monitoring
function
P062F00
EEPROM communication
General fault type
P064100
Sensor supply voltage
Signal voltage too high or too low
P065700
Power supply pressure regulators
and solenoids
Signal not plausible Circuit break
P065800
Power supply pressure regulators
and solenoids
Short circuit to ground
P065900
Power supply pressure regulators
and solenoids
Short circuit to power supply
P066800
Micro processor chip temperature
sensor
Signal voltage too low
P066900
Micro processor chip temperature
sensor
Signal voltage too high
P070000
Combination of impossible
substitute functions
General fault type Signal not plausible Signal voltage too high
P070500
Selector position switch
Signal not plausible
P071000
Transmission oil temperature
Circuit break
P071100
Transmission oil temperature
General fault type Signal voltage too high
P071200
Transmission oil temperature
Short circuit to ground
P071300
Transmission oil temperature
Short circuit to power supply
P071600 Transmission turbine speed sensor
Short circuit to ground or power break Signal voltage too high Signal
voltage too low
