Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 376

Published: 11-May-2011

Automatic Transmission/Transaxle - Vehicles With: 6-Speed Automatic Transaxle -
AWF21 - Diagnostic StrategyVehicles With: 6-Speed Automatic Transaxle - AWF21

Diagnosis and Testing

Principles of Operation

For a detailed description of the automatic transmission/transaxle, refer to the relevant Description and Operation sections in the workshop
manual.REFER to: Transmission Description (307-01, Description and Operation).

Inspection and Verification

1. Verify the customer concern.

2. Visually inspect for obvious signs of mechanical or electrical damage.

Mechanical

Electrical

Hydraulic

Damaged/stuck shift mechanism
Damaged automatic transmission casing

Blown fuse(s)
Damaged, loose or corroded connectors
Wiring harness
Transmission Control Module (TCM)
Gear Selection Module (GSM)
Engine Control Module (ECM)

Fluid level too high/low
Poor condition of fluid
Fluid leak

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next

step.

4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.

DTC Index

CAUTION: W hen probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number

3548-1358-00.

• NOTE: If the control module/transmission is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy
and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new
module/transmission.

• NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the
first five digits of the seven digit code listed to identify the fault (the last two digits give additional information read by the manufacturer
approved diagnostic system).

• NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places,
and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

• NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

• NOTE: Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.

• NOTE: If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause.
Always check for loose connections and corroded terminals.

Service Routines

Carry out the service routines listed below when instructed to do so by the repair 'action' of the DTC Index

1. Vehicle Configuration Main Menu, Configure New Modules, Transmission Control Module: This routine is used to install

software into a new TCM. The routine must be performed if a new TCM has been installed.

2. Vehicle Configuration Main Menu, Configure New Modules, On Demand Self Test: This routine is used to check that the TCM is

installed without any electrical errors. When the routine is activated the TCM will test all outputs for electrical errors. The routine
must be performed if the TCM has been separated from the transmission.

3. Vehicle Configuration Main Menu, Configure Existing Modules, Transmission Control Module: This routine is used to install

software into an existing TCM. The routine must be performed if an existing TCM is having its software updated.

4. Vehicle Configuration Main Menu, Special Applications, Transmission Control Module Neutral Learn:: This routine is used to

re-calibrate the neutral position. The routine must be performed if the TCM has been separated from the transmission, TCM
software is updated or TCM hardware is updated.

5. Vehicle Configuration Main Menu, Special Applications, Clear Self Learning Data: This routine is used to clear the solenoid

adaptation in the TCM. The routine must be performed if the transmission is replaced and TCM is reused.

6. Vehicle Configuration Main Menu, Special Applications, Set Adaption Mode: This routine is used when the transmission is

replaced. W hen this is done the transmission must be pre adapted before the customer drives the car, otherwise bad shifts might
occur.

7. Vehicle Configuration Main Menu, Special Applications, Oil Change Reset: This routine is used to clear the counter that counts

the oil degradation. The data needs to be erased if the oil is exchanged or if the transmission is replaced and the TCM is reused.

8. Vehicle Configuration Main Menu, Special Applications, TCM Adaption Clear: This routine is used to rest the self learning data

in the TCM. The routine must be performed after a software update, if the TCM has been installed to another vehicle or if any
mechanical components have been replaced in the transmission.

DTC

Description

Possible Cause

Action

P021868 Transmission Fluid

Over temperature
Condition

Event information. System
event not caused by the TCM,
but requiring the TCM to
record this DTC

Check the transmission fluid level and condition. Check the
transmission fluid cooler/hoses for signs of obstruction, damage,
blockage. Replace as required. Check the engine cooling system and
engine cooling fans operation. Suspect the TCM/transmission, check

DTC

Description

Possible Cause

Action

Transmission fluid level low
Transmission fluid
cooler/hoses are obstructed,
damaged, blocked
Mechanical fault in the
transmission
Engine cooling system failure

and install a new TCM/transmission as required, refer to the new
module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P050000 Vehicle Speed Sensor

Vehicle speed sensor circuit
SP+ or SP- open circuit
Vehicle speed sensor failure
Vehicle speed sensor circuit
SP+ short to ground
Internal failure in TCM

Carry out any diagnostic pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Suspect the TCM, check
and install a new TCM as required, refer to the new
module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P056100 System Voltage

Unstable

Battery voltage too low
Battery voltage too high
High contact resistance or
oxidation in the connector on
the TCM or the transmission
Battery charger with incorrect
voltage has been used
Charging system failure
Internal failure in TCM

Carry out any diagnostic pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the electrical
guides and check BAT+ circuit for correct battery voltage, open circuit,
oxidation in connector terminals. Check the vehicle charging system.
Suspect the TCM, check and install a new TCM as required, refer to the
new module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P056200 System Voltage Low

Battery voltage too low
High contact resistance or
oxidation in the connector on
the TCM or the transmission
Battery charger with incorrect
voltage has been used
Charging system failure
Internal failure in TCM

P060100 Internal Control

Module Memory Check
Sum Error

Internal failure in TCM

Using the manufacturer approved diagnostic system select the vehicle
configuration main menu, select configure existing modules menu and
programme the transmission control module. Suspect the TCM, check
and install a new TCM as required, refer to the new
module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P060300 Internal Control

Module Keep Alive
Memory (KAM) Error

Internal failure in TCM

P060400 Internal Control

Module Random
Access Memory (RAM)
Error

Internal failure in TCM

P060500 Internal Control

Module Read Only
Memory (ROM) Error

Internal failure in TCM

P062F00 Internal Control

Module EEPROM Error

Internal failure in TCM

P070500 Transmission Range

Sensor A Circuit
(PRNDL Input)

Incorrect adjustment of gear
selector lever cable
Incorrect adjustment of gear
position sensor
Internal failure in TCM

Check the adjustment of the gear selector lever cable. Carry out
neutral learn service routine. Suspect the TCM, check and install a new
TCM as required, refer to the new module/component installation note
at the top of the DTC Index. Refer to service routines at the top of
the DTC Index and carry out service routines as required using the
manufacturer approved diagnostic system

P070900 Transmission Range

Sensor A Circuit
Intermittent

Incorrect adjustment of gear
selector lever cable
Incorrect adjustment of gear
position sensor
Internal failure in TCM

P071100 Transmission Fluid

Temperature Sensor A
Circuit
Range/Performance

High contact resistance in the
connector terminals
Failure of oil temperature
sensor
Internal failure in TCM

DTC

Description

Possible Cause

Action

module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P071200 Transmission Fluid

Temperature Sensor A
Circuit Low

Short to ground on the OT
circuit of the oil temperature
sensor
Failure of oil temperature
sensor
Internal failure in TCM

Suspect the transmission, check and install a new transmission as
required, refer to the new module/component installation note at the
top of the DTC Index. Suspect the TCM, check and install a new TCM
as required, refer to the new module/component installation note at
the top of the DTC Index. Refer to service routines at the top of the
DTC Index and carry out service routines as required using the
manufacturer approved diagnostic system

P071300 Transmission Fluid

Temperature Sensor A
Circuit High

High contact resistance in the
connector terminals
Short to power on the OT
circuit of the oil temperature
sensor
Open circuit on the OT circuit
of the oil temperature sensor
Failure of oil temperature
sensor
Internal failure in TCM

Check for high contact resistance in the connector terminals between
the TCM and transmission. Suspect the TCM, check and install a new
TCM as required, refer to the new module/component installation note
at the top of the DTC Index. Suspect the transmission, check and
install a new transmission as required, refer to the new
module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P071500 Turbine/Input Shaft

Speed Sensor A
Circuit

Short to power on the NIN+
circuit of the input speed
sensor
Failure of input speed sensor
Internal failure in TCM

Suspect the TCM, check and install a new TCM as required, refer to the
new module/component installation note at the top of the DTC Index.
Suspect the transmission, check and install a new transmission as
required, refer to the new module/component installation note at the
top of the DTC Index. Refer to service routines at the top of the DTC
Index and carry out service routines as required using the
manufacturer approved diagnostic system

P071600 Turbine/Input Shaft

Speed Sensor A
Circuit
Range/Performance

High contact resistance in the
connector terminals
Input speed sensor not
correctly installed
Failure of input speed sensor
Internal failure in TCM

Check for high contact resistance in the connector terminals between
the TCM and transmission. Check input speed sensor installed
correctly. Suspect the TCM, check and install a new TCM as required,
refer to the new module/component installation note at the top of the
DTC Index. Suspect the transmission, check and install a new
transmission as required, refer to the new module/component
installation note at the top of the DTC Index. Refer to service routines
at the top of the DTC Index and carry out service routines as required
using the manufacturer approved diagnostic system

P071800 Turbine/Input Shaft

Speed Sensor A
Circuit Intermittent

High contact resistance in the
connector terminals
Input speed sensor not
correctly installed
Failure of input speed sensor
Internal failure in TCM

P072000 Output Shaft Speed

Sensor Circuit

Short to power SP+ circuit of
vehicle speed sensor
Failure of vehicle speed
sensor
Internal failure in TCM

P072100 Output Shaft Speed

Sensor Circuit
Range/Performance

High contact resistance in the
connector terminals
Vehicle speed sensor not
correctly installed
Failure of vehicle speed
sensor
The wheel radius does not
agree with the wheel radius
programmed in the vehicle's
configuration file
Internal failure in TCM

Check the correct wheels and tires are installed. Using the
manufacturer approved diagnostic system go to vehicle setup and
configuration tab, add/remove accessories and carry out, tire size
rolling circumference test. Check for high contact resistance in the
connector terminals between the TCM and transmission. Check vehicle
speed sensor installed correctly. Suspect the TCM, check and install a
new TCM as required, refer to the new module/component installation
note at the top of the DTC Index. Suspect the transmission, check and
install a new transmission as required, refer to the new
module/component installation note at the top of the DTC Index.
Refer to service routines at the top of the DTC Index and carry out
service routines as required using the manufacturer approved
diagnostic system

P072200 Output Shaft Speed

Sensor Circuit No
Signal

High contact resistance in the
connector terminals
Failure of vehicle speed
sensor
Internal failure in TCM

P072300 Output Shaft Speed

Sensor Circuit
Intermittent

High contact resistance in the
connector terminals
Vehicle speed sensor not
correctly installed
Failure of vehicle speed
sensor
Internal failure in TCM

Check for high contact resistance in the connector terminals between
the TCM and transmission. Check vehicle speed sensor installed
correctly. Suspect the TCM, check and install a new TCM as required,
refer to the new module/component installation note at the top of the
DTC Index. Suspect the transmission, check and install a new
transmission as required, refer to the new module/component
installation note at the top of the DTC Index. Refer to service routines
at the top of the DTC Index and carry out service routines as required
using the manufacturer approved diagnostic system

P072500 Engine Speed Input

Circuit

Open circuit on CAN circuit
between ECM and TCM
Engine speed signal has not
been updated
Engine speed signal quality
factor has a failure value

Refer to the electrical guides and check CAN circuit for open circuit,
short to ground between ECM and TCM. Check ECM for DTCs and refer
to relevant DTC Index

DTC

Description

Possible Cause

Action

Short to ground on CAN circuit
between ECM and TCM

P072900 Gear 6 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

Suspect the transmission, check and install a new transmission as
required, refer to the new module/component installation note at the
top of the DTC Index. Refer to service routines at the top of the DTC
Index and carry out service routines as required using the
manufacturer approved diagnostic system

P073000 Incorrect Gear Ratio

Internal malfunction in the
transmission

P073095 Incorrect Gear Ratio

Incorrect final drive installed
Incorrect assembly. The TCM
has detected that the
transmission has the incorrect
gear ratio

Suspect the final drive unit, check and install a new transmission as
required, refer to the new module/component installation note at the
top of the DTC Index. Refer to service routines at the top of the DTC
Index and carry out service routines as required using the
manufacturer approved diagnostic system

P073100 Gear 1 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

P073200 Gear 2 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

P073300 Gear 3 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

P073400 Gear 4 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

P073500 Gear 5 Incorrect Ratio

Incorrectly regulating solenoid
Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip

P073600 Reverse Incorrect

Ratio

Mechanical failure in
transmission
Transmission components
worn causing low system fluid
pressure and slip
Internal failure in TCM

P073E64 Unable to Engage

Reverse

Signal plausibility failure. The
TCM has detected a
plausibility failure
High contact resistance in the
connector terminals
C3 pressure control SLC3 not
operating when reverse gear
is selected
Mechanical failure in
transmission

P073F00 Unable to Engage

Gear 1

High contact resistance in the
connector terminals
B1 pressure control SLB1
solenoid has stuck in off or on
position
C2 pressure control SLC2
solenoid has stuck in off or on
position
C3 pressure control SLC3
solenoid has stuck in off or on
position
Mechanical failure in
transmission

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Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 376

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