2001 Jaguar XK8 2D ConvertibleFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts: Introduction

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
CAMSHAFT POSITION SENSOR RESISTANCE (1)

Application Ohms
S-Type 200-400
XJ8, XJR, XK8 & XKR 1850-2500
(1) Measure between sensor connector terminals.
CRANKSHAFT POSITION SENSOR RESISTANCE (1)

Application Ohms
S-Type (2)
XJ8, XJR, XK8 & XKR 950-1250
(1) Measure between sensor connector terminals No. 1 and 2.
(2) Information is not available from manufacturer.
ENGINE OIL TEMPERATURE, ENGINE FUEL TEMPERATURE & INTAKE AIR TEMPERATURE SENSOR RESISTANCE (S-TYPE)

Temperature °F (°C) Ohms
248 (120) 1180
230 (110) 1550
212 (100) 2070
194 (90) 2800
176 (80) 3840
158 (70) 5370
140 (60) 7700
122 (50) 10,970
104 (40) 16,150
86 (30) 24,270
68 (20) 37,300
50 (10) 58,750
-40 (-40) 92,500
INTAKE AIR TEMPERATURE & ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE (XJ8, XJR, XK8 & XKR)

Temperature °F (°C) Ohms
-4 (-20) 15,000
32 (0) 5740
68 (20) 2450
104 (40) 1150
140 (60) 584
176 (80) 320
212 (100) 184
HEATED OXYGEN SENSOR VOLTAGE

Condition Specification
Lean Less Than 400 Millivolts
Rich 600 Millivolts To One Volt
KNOCK SENSOR RESISTANCE

Application Ohms
S-Type 4500-5500
XJ8, XJR, XK8 & XKR (1)
(1) Information is not available from manufacturer.
TP SENSOR VOLTAGE

Application Voltage
All Models (1)
(1) Information is not available from manufacturer. See PIN VOLTAGE CHARTS article.
MAF SENSOR VOLTAGE

Application Voltage
S-Type (1)
XJ8, XJR, XK8 & XKR (2) .7-1.7
(1) Information is not available from manufacturer. See PIN VOLTAGE CHARTS article.
(2) Disconnect MAF sensor connector. Connect jumper wire between MAF connector terminal No. 1 MAF terminal No. 1. Connect another jumper wire between MAF connector terminal No. 5 and MAF terminal No. 5. Start engine and let it idle. Measure voltage between MAF terminals No. 1 and 5.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.