Pinpoint Test D
Pinpoint test D: P0702, P0748, P1748P0702, P0748, P1748
TEST D: RETRIEVE DTCS
NOTE: Battery and or ECM disconnection prior to scanning will erase all data, ensure that the correct DTC is present.
Connect scan tool
Record DTC(s), freeze frame data and
GO to [D2]
D2: CHECK HARNESS +VE CONTINUITY
With EM062 and GB001 disconnected, measure the resistance between GB001/006 and EM062/038
^ Is the resistance < 0.5 Ohms?
Yes
GO to [D3]
No
Inspect EM062, EM044 and GB001 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D3: CHECK FOR SHORT TO B+
With EM062 and GB001 disconnected, measure the resistance between EM062/038 and EM061/029
^ > 10 Ohms?
Yes
GO to [D4]
No
Inspect EM062, EM044 and GB001 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D4: CHECK HARNESS SHORT TO GROUND
With EM062 and GB001 disconnected, measure the resistance between EM062/038 and EM008R
^ Is the resistance > 10 Ohms?
Yes
GO to [D5]
No
Inspect EM062 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D5: CHECK HARNESS CONTINUITY - PRESSURE REGULATOR
With EM062 and GB001 disconnected, measure the resistance in turn:
EM062/036 and GB001/002
EM062/037 and GB001/010
^ Is the resistance < 0.5 Ohms?
Yes
GO to [D6]
No
Inspect EM062, EM044 and GB001 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D6: CHECK FOR SHORT TO B+
With EM062 and GB001 disconnected, measure the resistance between EM062/036 and EM061/029 Repeat for EM062/037 and EM061/029
^ Is the resistance > 10 Ohms?
Yes
GO to [D7]
No
Inspect EM062 and GB001 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D7: CHECK HARNESS SHORT TO GROUND
With EM062 and GB001 disconnected, measure the resistance between EM062/036 and EM008R
Repeat for EM062/037 and EM008R
^ Is the resistance > 10 Ohms?
Yes
GO to [D8]
No
Inspect EM062 for corrosion, bent/pushed back pins or locate harness. Repair as necessary and test the system for normal operation.
D8: CHECK INTERNAL HARNESS AND COMPONENT CONTINUITY - PRESSURE REGULATORS
With EM062 disconnected, measure the resistance between the following, noting the relevant DTC
For P0702 or P0748 EM062/38 and EM062/036
For P0702 or P1748 EM062/38 and EM062/037
^ Is the resistance 16 to 18 Ohms?
Yes
Reconnect EM062
GO to [D9]
No
Renew the Valve Body Assembly.
Drive the vehicle for a period from cold to include idle, brisk acceleration and steady state cruising up to and including normal engine temperature.
GO to [D9]
D9: END
Cycle the ignition ON - (OFF for 2 minutes) - ON, start the engine and run >1600 rpm
^ Has the fault code cleared?
Yes
STOP
No
Contact Jaguar Service