Jaguar XJ (X350). Manual — part 1338

Amber

Restricted performance/Gearbox fault

Gearbox default to set gear

P1796

Amber

Restricted performance/Gearbox fault

Engine speed limited, reverse throttle

progression enabled

P1797

Default mode Definitions

LIMP-HOME MODE

•

Throttle motor off

•

Throttle motor relay off

•

Throttle motor circuit off

•

Fuel intervention

•

Cruise control inhibited

LIMP-HOME UNAVAILABLE

•

Power limitation

•

Vehicle speed limited to 120 kph

•

Reverse throttle progression enabled

•

Cruise control inhibited

REVERSE THROTTLE PROGRESSION

•

Throttle opening limited to maximum 30%

NOTE:

The throttle operation uses the same map as for reverse gear.

ENGINE SPEED LIMITED

•

Engine runs normally, up to 3000 rpm

•

Engine speed restricted to 3000 rpm maximum, by fuel cut-off

HIGH IDLE

•

Throttle valve kept in fixed position by motor

•

Cruise control inhibited

SAFETY REDUNDANCY

•

Power limitation

•

Vehicle speed limited to 120 kph

•

Reverse throttle progression enabled

•

Cruise control inhibited

Diagnostic Trouble Code (DTC) index

DTC

Control Module

Description

Possible Source

Action

U2601 AMP

D2B "wake-up" circuit

fault

•

D2B "wake-up"
circuit; short circuit to
ground

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2609 AMP

D2B "wake-up" signal

out of specification

•

D2B "wake-up"
circuit; high
resistance

•

D2B network slave
module failure

•

Power amplifier
failure

For D2B "wake-up"

circuit tests, GO to

Pinpoint Test

G239843p5.

.

U2610 AMP

D2B network "position

status report" not

received

•

D2B network error

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

.

U2611 AMP

D2B network "alarm

clear command" not

received

•

D2B network error

Check the D2B

"wake-up" circuit,

and the optical ring,

GO to Pinpoint Test

G239843p5.

, GO to Pinpoint

Test G239843p29.

, and GO to Pinpoint

Test G239843p30.

. GO to Pinpoint

Test G239843p1.

U2023 ASCM

CAN fault message

received from other

network modules

•

CAN/ASCM related
fault; ECM, TCM,
DSCM, IC

•

ASCM internal CAN
fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

www.

•

CAN network fault

Pinpoint Test

G239843p2.

.

U2501 ASCM

CAN ECM token

missing

•

CAN ECM token
missing on network
(other CAN modules
also flag ECM token
missing fault)

•

ECM/CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2502 ASCM

CAN TCM token

missing

•

CAN TCM token
missing on network
(other CAN modules
also flag TCM token
missing fault)

•

TCM/CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2503 ASCM

CAN IC token missing

•

CAN IC token missing
on network (other
CAN modules also
flag IC token missing
fault)

•

IC/CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2504 ASCM

CAN DSCM token

missing

•

CAN DSCM token
missing on network
(other CAN modules
also flag DSCM token
missing fault)

•

DSCM/CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2505 ASCM

CAN TCM message

missing

•

TCM CAN DTC flagged

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2520 ASCM

CAN IC module missing

•

IC CAN circuit; open
circuit, short circuit to
B+, short circuit to
ground

•

IC CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2521 ASCM

CAN DSCM module

missing

•

DSCM CAN circuit;
open circuit, short
circuit to B+, short
circuit to ground

•

DSCM CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2522 ASCM

CAN TCM module

missing

•

TCM CAN circuit;
open circuit, short
circuit to B+, short
circuit to ground

•

TCM CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U2523 ASCM

CAN ECM module

missing

•

ECM CAN circuit;
open circuit, short
circuit to B+, short
circuit to ground

•

ECM CAN fault

•

CAN network fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

Pinpoint Test

G239843p2.

.

U1900 ASM

CAN communication

fault

•

CAN circuit; open
circuit, short circuit to
B+, short circuit to
ground

•

ASM internal CAN
fault

For CAN open circuit

tests, GO to Pinpoint

Test G239843p1.

. For CAN short

circuit tests, GO to

www.