1998 JAGUAR X308 Workshop Manual

Page 1609 of 2490

JAGUAR X308 1998 2.G Workshop Manual Pinpoint test G: P0157, P0158 
 With EM010 and EM015 disconnected, measure the 
voltage between EM010/023 and EM015/002. 1 
Is the voltage B+? 
Yes Remove link lead and reconnect all connectors. 
GO t

Page 1610 of 2490

JAGUAR X308 1998 2.G Workshop Manual  Connect the scan tool 1 
Have the DTC(s) and freeze frame data been recorded? 
Yes  GO to G2  
G2: CHECK FOR O2 SENSOR FAILURE
 Run the engine for a period to  warm the sensor and then 
maintain a st

Page 1611 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With the conditions held as G2, suddenly decelerate to idle. 1 
Has the voltage dropped to 400mV or less ? 
Yes GO to G4  
No  Renew O2 sensor and reconnect plug(s). 
GO to G6  
G4: CHECK FOR O2 SENS

Page 1612 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With the conditions held as G3, suddenly accelerate to 
approximately 2500 rpm. 1 
Has the voltage risen to between 600mV and 1 volt? 
Yes GO to G5  
No  Renew O2 sensor and reconnect plug(s). 
GO to

Page 1613 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With the conditions held as in G4, run the engine at 1500 
rpm for approximately 3 minutes. 1 
Does the displayed voltage drop below 400mV and rise above 500 
mV, cycling approximately every 180 seco

Page 1614 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With EM012 and EM024 disconnected, measure the 
resistance between EM012/016 and EM024/002. 1 
Is the resistance < 0.5 OHM? 
Yes GO to G8  
No  Inspect harness / connecto rs EM012, and EM024 for 
cor

Page 1615 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With EM012 and EM024 disconnected, measure the 
resistance between EM012/022 and EM024/001. 1 
Is the resistance < 0.5 OHM? 
Yes GO to G9  
No  Inspect harness / connecto rs EM012, and EM024 for 
cor

Page 1616 of 2490

JAGUAR X308 1998 2.G Workshop Manual  With EM024 disconnected measure the insulation resistance 
between sensor pin 001 and sensor body. 1 
Repeat for pin 002 and sensor body. 2 
Is the resistance > 10 MOHM? 
Yes  GO to G11  
No  Renew t