Jaguar X-Type Sedan and Estate (Wagon). Service manual — part 482
Published: 11-May-2011
Speed Control - Speed Control2.0L NA V6 - AJV6
Diagnosis and Testing
The complexity of the electronics involved with the vehicle speed control system and the communication network which is connected to the
system, preclude the use of workshop general electrical test equipment. For diagnosis and testing of the vehicle speed control system, refer
to the Jaguar approved diagnostic system.
Inspection and Verification
1. Verify the customer concern.
1.
2. Visually inspect for obvious signs of mechanical or electrical damage.
2.
Visual Inspection Chart
Mechanical
Electrical
Throttle body mechanism
Module
Switch(es)
Instrument cluster
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next
step.
3.
4. If the cause is not visually evident, verify the symptom and refer to the Jaguar approved diagnostic system.
4.
5. The DTC summaries are generated to support the Jaguar approved diagnostic system, but also provide the basis for diagnosis of
OBD related concerns using a suitable generic scan tool, in conjunction with the electrical guides. Until the DTC summaries and
electrical guides are available, the speed control system can only be accurately diagnosed using the Jaguar approved diagnostic
system. For additional information, refer to Dealer technical support.
5.
Published: 11-May-2011
Speed Control - Speed Control2.5L NA V6 - AJV6/3.0L NA V6 - AJ27
Diagnosis and Testing
The complexity of the electronics involved with the vehicle speed control system and the communication network which is connected to the
system, preclude the use of workshop general electrical test equipment. For diagnosis and testing of the vehicle speed control system, refer
to the Jaguar approved diagnostic system.
The Jaguar approved diagnostic system tests and analyses all functions of the vehicle speed control system. The following DTCs may be
tested using a suitable meter.
Inspection and Verification
1. Verify the customer concern.
1.
2. Visually inspect for obvious signs of mechanical or electrical damage.
2.
Visual Inspection Chart
Mechanical
Electrical
Throttle body mechanism
Throttle body actuator
Module
Switch(es)
Instrument cluster
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next
step.
3.
4. If the cause is not visually evident, verify the symptom and refer to the Jaguar approved diagnostic system.
4.
Diagnostic Trouble Code (DTC) Index
DTC
Description
Possible Source
Action
P0568 Speed control input signal low/high resistance,
open circuit.
Speed control switches internal steering wheel circuit, open
circuit, high resistance.
Cassette reel open circuit, high resistance.
Cassette reel to engine control module (ECM) circuit, open
circuit, high resistance
GO to Pinpoint
Test
A.
P0565 Speed control ON/OFF switch fault.
Speed control switches internal steering wheel circuit, short
to ground.
Cassette reel short to ground.
Cassette reel to ECM circuit short to ground.
ON/OFF switch failure. (Stuck on)
GO to Pinpoint
Test
B.
P0566 Speed control CANCEL switch fault.
Speed control switches internal steering wheel circuit, short
to ground.
Cassette reel short to ground.
Cassette reel to ECM circuit short to ground
CANCEL switch failure. (Stuck on).
GO to Pinpoint
Test
C.
P0567 Speed control RESUME switch fault.
Speed control switches internal steering wheel circuit, short
to ground.
Cassette reel short to ground.
Cassette reel to ECM circuit short to ground.
RESUME switch failure. (Stuck on)
GO to Pinpoint
Test
D.
P0569 Speed control SET/- switch fault.
Speed control switches internal steering wheel circuit, short
to ground.
Cassette reel short to ground.
Cassette reel to ECM circuit short to ground.
SET/- switch failure.
GO to Pinpoint
Test
E.
P0570 Speed control SET/+ switch fault.
Speed control switches internal steering wheel circuit, short
to ground.
Cassette reel short to ground.
Cassette reel to ECM circuit short to ground.
SET/+ switch failure.
GO to Pinpoint
Test
F.
P0831 Clutch cancel switch, low voltage. (Switch
normally closed).
Switch supply open circuit.
Switch to ECM circuit open circuit or high resistance.
Switch failure.
GO to Pinpoint
Test
G.
P0832 Clutch cancel switch, high voltage. (Switch
normally closed).
Switch short circuit to battery.
Switch failure.
GO to Pinpoint
Test
G.
P0834 Clutch pedal safety switch, low voltage.
(Switch normally open).
Clutch pedal safety switch supply circuit open circuit.
Clutch pedal safety switch to ECM circuit open circuit/high
resistance.
Switch failure.
GO to Pinpoint
Test
H.
P0835 Clutch pedal safety switch, high voltage.
(Switch normally open).
Clutch pedal safety switch to ECM circuit short circuit to
battery.
Switch failure.
GO to Pinpoint
Test
H.
P1571 Brake ON/OFF switch, brake cancel switch
malfunction.
Brake ON/OFF switch to ECM circuit open circuit, short circuit
to ground, high resistance.
Brake ON/OFF switch power supply circuit open circuit.
Brake ON/OFF switch failure.
Brake cancel switch to ECM circuit open circuit, short circuit
GO to Pinpoint
Test
I.
1
2
3
1
1
2
3
1
2
1
2
1
1
2
1
DTC
Description
Possible Source
Action
to ground, high resistance.
Brake cancel switch power supply circuit open circuit.
Brake cancel switch failure.
Pinpoint Tests
PINPOINT TEST A : P0568. CHECK SPEED CONTROL INPUT WIRE FOR OPEN CIRCUIT/HIGH RESISTANCE
TEST
CONDITIONS
DETAILS/RESULTS/ACTIONS
A1: CHECK INTERNAL STEERING WHEEL CIRCUIT FOR OPEN CIRCUIT/HIGH RESISTANCE (INPUT)
Disconnect steering wheel internal connector, SW5.
Disconnect steering wheel connector, SW4.
Measure the resistance between SW 5, pin 4 (YR) and SW4, pin 1 (YR).
Is the resistance less than 5 ohms?
Yes
GO to A3
.
No
INSTALL a new steering wheel assembly.
REFER to Section
211-04 Steering Column
.
CLEAR the DTC. TEST the system for normal operation.
A2: CHECK INTERNAL STEERING WHEEL CIRCUIT FOR OPEN CIRCUIT/HIGH RESISTANCE (SIGNAL)
Measure the resistance between SW 5, pin 2 (B) and SW4, pin 3.
Is the resistance less than 5 ohms?
Yes
GO to A3
.
No
INSTALL a new steering wheel assembly.
REFER to Section
211-04 Steering Column
.
CLEAR the DTC. TEST the system for normal operation.
A3: CHECK STEERING WHEEL CASSETTE FOR OPEN CIRCUIT/HIGH RESISTANCE (INPUT)
Disconnect steering wheel Cassette connector, IP34.
Reconnect steering wheel internal connector, SW 5.
Measure the resistance between SW 5, pin 4 (YR) and IP34, pin 8 (YR).
Is the resistance less than 5 ohms?
Yes
GO to A4
.
No
INSTALL a new steering wheel Cassette assembly.
REFER to Section
211-04 Steering Column
.
CLEAR the DTC. TEST the system for normal operation.
A4: CHECK STEERING WHEEL CASSETTE FOR OPEN CIRCUIT/HIGH RESISTANCE (SIGNAL)
Disconnect steering wheel cassette connector, IP34.
Measure the resistance between SW 5, pin 2 (B) and IP34, pin 6 (YG).
Is the resistance less than 5 ohms?
Yes
GO to A5
.
No
INSTALL a new steering wheel cassette assembly.
REFER to Section
211-04 Steering Column
.
CLEAR the DTC. TEST the system for normal operation.
A5: CHECK INPUT LEAD FROM ECM TO STEERING WHEEL CASSETTE FOR OPEN CIRCUIT/HIGH RESISTANCE
Disconnect ECM electrical connector, EN16.
Measure the resistance between IP34, pin 8 (YR) and EN16, pin 47 (YR).
Is the resistance less than 5 ohms?
Yes
GO to A6
.
No
Repair the circuit between EN16, pin 47 and IP34, pin 8. For additional information, refer to wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
A6: CHECK SIGNAL LEAD FROM ECM TO STEERING WHEEL CASSETTE FOR OPEN CIRCUIT/HIGH RESISTANCE
Measure the resistance between IP34, pin 6 (YG) and EN16, pin 48 (YG).
Is the resistance less than 5 ohms?
Yes
GO to B1
.
No
Repair the circuit between EN16, pin 48 and IP34, pin 6. For additional information, refer to wiring diagrams. CLEAR
the DTC. TEST the system for normal operation.
PINPOINT TEST B : P0565. SPEED CONTROL ON/OFF SWITCH MALFUNCTION
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
B1: CHECK SWITCH FUNCTION OF ON/OFF SWITCH
Connect an Ohmmeter between pins 1 and 3 of the Speed Control switchpack.
Set the switch to the ON position.
Does the resistance vary by 2200 ohms?
Yes
GO to B2
.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
B2: CHECK SWITCH FUNCTION OF ON/OFF SWITCH
Set the switch to the OFF position.
1
2
1
2
1
2
1
2
1
2
3
1
2
3
Is the resistance 0 ohms?
Yes
No electrical fault in switchpack. RECHECK DTCs.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
PINPOINT TEST C : P0566. SPEED CONTROL CANCEL SWITCH MALFUNCTION
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
C1: CHECK SWITCH FUNCTION OF CANCEL SWITCH
Connect an Ohmmeter between pins 1 and 3 of the Speed Control switchpack.
Operate the Cancel switch.
Does the resistance vary by 4200 ohms?
Yes
No electrical fault in switchpack. RECHECK DTCs.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
PINPOINT TEST D : P0567. SPEED CONTROL RESUME SWITCH MALFUNCTION
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
D1: CHECK SWITCH FUNCTION OF RESUME SWITCH
Connect an Ohmmeter between pins 1 and 3 of the Speed Control switchpack.
Operate the Resume switch.
Does the resistance vary by 3200 ohms?
Yes
No electrical fault in switchpack. RECHECK DTCs.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
PINPOINT TEST E : P0569. SPEED CONTROL SET/- SWITCH MALFUNCTION
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
E1: CHECK SWITCH FUNCTION OF SET/- SWITCH
Connect an Ohmmeter between pins 1 and 3 of the Speed Control switchpack.
Operate the Set /- switch.
Does the resistance vary by 4000 ohms?
Yes
No electrical fault in switchpack. RECHECK DTCs.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
PINPOINT TEST F : P0570. SPEED CONTROL SET/+ SWITCH MALFUNCTION
TEST CONDITIONS
DETAILS/RESULTS/ACTIONS
F1: CHECK SWITCH FUNCTION OF SET/+ SWITCH
Connect an Ohmmeter between pins 1 and 3 of the Speed Control switchpack.
Operate the Set /+ switch.
Does the resistance vary by 3700 ohms?
Yes
No electrical fault in switchpack. RECHECK DTCs.
No
INSTALL a new switchpack.
REFER to
Speed Control Switch
in this section.
CLEAR the DTC. TEST the system for normal operation.
PINPOINT TEST G : P0831, P0832. CLUTCH CANCEL SWITCH, HIGH/LOW VOLTAGE
TEST
CONDITIONS
DETAILS/RESULTS/ACTIONS
G1: CHECK THE POWER SUPPLY CIRCUIT TO THE CLUTCH CANCEL SWITCH
Disconnect the clutch cancel switch electrical connector, PA4.
Turn the ignition switch to the ON position.
Measure the voltage between PA4, pin 1 (RW) and GROUND.
Is the voltage greater than 10 volts?
Yes
GO to G2
.
No
REPAIR the circuit between the clutch cancel switch electrical connector, PA4, pin 1 (RW ) and the ignition switch. For
additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for normal operation.
(This circuit includes the ignition relay and the inertia switch)
G2: CHECK THE POWER SUPPLY CIRCUIT TO THE CLUTCH CANCEL SWITCH FOR SHORT CIRCUIT TO BATTERY
Disconnect the clutch cancel switch electrical connector, PA4.
Turn the ignition switch to the OFF position.
Measure the voltage between PA4, pin 1 (RW) and GROUND.
Is the voltage greater than 1 volt?
Yes
Repair the short circuit. For additional information, refer to wiring diagrams. CLEAR the DTC. TEST the system for
normal operation.
No
GO to G3
.
G3: CHECK THE SWITCH ACTION OF THE CLUTCH CANCEL SWITCH
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