Jaguar XJ (X350). Manual — part 905

P1396

Left-hand variable

camshaft timing (VCT) oil

control solenoid

malfunction

VCT solenoid to ECM PWM

drive circuit fault

VCT solenoid ground circuit

fault

VCT solenoid failure

Oil contamination

VCT oil flow fault

VCT/camshaft mechanical

failure

Check oil condition; For VCT

solenoid tests, GO to Pinpoint

Test G258127p30.

For engine information,

Engine

P1410

Air cleaner solenoid valve

drive circuit malfunction

ECM to air cleaner solenoid

circuit; open circuit,
short circuit, high
resistance

Air cleaner solenoid failure

For air cleaner solenoid circuit

tests, GO to Pinpoint Test

G258127p38.

P1474

Intercooler coolant pump

malfunction

Intercooler coolant pump

failure

For Intercooler coolant pump

circuit tests, GO to Pinpoint Test

G258127p39.

P1516

Gear change

PARK/NEUTRAL driving

malfunction

ECM P/N circuit; short

circuit to high voltage,
high resistance

Gear selector cable

adjustment incorrect

J-Gate module adjustment

incorrect

J-Gate module/ECM CAN

fault

For P/N circuit tests and gear

selector cable/J-Gate module

adjustment,

External Controls For CAN tests,

Communications Network

P1517

Gear change

PARK/NEUTRAL starting

malfunction

ECM P/N circuit; short

circuit to ground, high
resistance

Gear selector cable

adjustment incorrect

J-Gate module adjustment

incorrect

J-Gate module/ECM CAN

fault

For P/N circuit tests and gear

selector cable/J-Gate module

adjustment,

External Controls For CAN tests,

Communications Network

P1571

Brake ON/OFF switch;

brake CANCEL switch

malfunction. (Note: Brake

ON/OFF switch - normally

open; brake CANCEL

switch - normally closed)

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 to
ground, high resistance

Brake CANCEL switch power

supply circuit; open
circuit

Brake CANCEL switch failure

For speed control tests,

Speed Control - VIN Range:

G00442->G45703

P1582

"Flight recorder" data is

stored if any one of five

conditions occur

Inertia switch

activated

Throttle limp-home

mode activated

Engine starts and

stumbles

Engine fails to start

Engine stall

If none of the five conditions

occur, check:

Inertia switch to ECM

circuit; short circuit to
B+ voltage

Inertia switch failure

Check the five conditions, for

inertia switch circuit tests, GO to

Pinpoint Test G258127p31.

P1603

TCM internal

communications error

TCM/Control valve failure

For transmission tests,

P1605 TCM RAM error

Battery power supply

circuit; open circuit,
short circuit to ground

TCM/Control valve failure

For transmission tests,

P1606

Engine management

system (EMS) control

relay malfunction

ECM control relay failure

ECM control relay to ECM

For EMS control relay tests, GO

to Pinpoint Test G258127p32.

www.

circuit fault

ECM control relay coil

power supply open
circuit

ECM ground circuit fault

(relay coil drive)

P1609

ECM microprocessor-to-

microprocessor

communication failure

ECM failure

Contact dealer technical support

for advice on possible ECM

failure.

P1611 ECM sub CPU failure

ECM failure

Contact dealer technical support

for advice on possible ECM

failure.

P1631

Throttle motor relay coil

drive circuit OFF failure

Throttle motor relay coil

power supply circuit;
open circuit

Throttle motor relay failure

Throttle motor relay coil to

ECM drive circuit open
circuit, short circuit to
ground

For throttle motor relay tests,

GO to Pinpoint Test

G258127p36.

P1632

Generator charge system

failure/generator

CHARGE/FAULT circuit

failure

ECM to generator

CHARGE/FAULT circuit;
short circuit, open
circuit, high resistance

Generator regulator failure

Generator failure

For charging system tests,

Generator

P1633 ECM main CPU failure

ECM failure

Contact dealer technical support

for advice on possible ECM

failure.

P1634

Throttle "watchdog"

circuit malfunction

ECM failure

Contact dealer technical support

for advice on possible ECM

failure.

P1637

CAN ECM to DSCCM

network malfunction

CAN open circuit fault -

DSCCM to ECM

CAN short circuit fault

For CAN tests,

Communications Network

Contact dealer technical support

for advice on possible ECM

DSCCM failure

ECM failure

failure.

P1638

CAN ECM/IC network

malfunction

CAN open circuit fault - IC to

ECM

CAN short circuit fault

IC failure

ECM failure

For CAN tests,

Communications Network

Contact dealer technical support

for advice on possible ECM

failure.

P1642 CAN circuit malfunction

CAN short circuit fault

Control module failure -

check for additional
logged DTCs to locate
control module source

For CAN tests,

Communications Network

P1643

CAN ECM/TCM network

malfunction

CAN open circuit fault - TCM

to ECM

CAN short circuit fault

TCM failure

ECM failure

For CAN tests,

Communications Network For

transmission tests,

Contact dealer technical support

for advice on possible ECM

failure.

P1646

Right-hand ECM HO2S

control malfunction

HO2S heater failure

HO2S sensing circuit; short

circuit to ground, short
circuit to high voltage,
open circuit, high
resistance

ECM failure

For HO2S tests, GO to Pinpoint

Test G258127p6.

and GO to Pinpoint Test

G258127p7.

Contact dealer technical support

for advice on possible ECM

failure.

P1647

Left-hand ECM HO2S

control malfunction

HO2S heater failure

HO2S sensing circuit; short

circuit to ground, short
circuit to high voltage,
open circuit, high
resistance

ECM failure

For HO2S tests, and GO to

Pinpoint Test G258127p11.

Contact dealer technical support

for advice on possible ECM

failure.

P1648

ECM internal KS CPU self-

test failure

ECM failure

Contact dealer technical support

for advice on possible ECM

failure.

www.