Mechanics

JAGUAR VANDEN PLAS SENSOR PROBLEM

1997 Jaguar Vanden Plas

Engine Performance problem
1997 Jaguar Vanden Plas 6 cyl Two Wheel Drive Automatic 70000 miles

my car engine turns over good but does not start it has run perfectly for 30000 miles except acouple times ihave felt aslight hesitation and once before it failed to start right up. That time iheld the accelerator down and it started after a few turns. Now it does not start bot ican smell gas.I loosened fuel line at rail and iand turned ignition on. It sprayed out with good pressure. Ihave used 2 code readers both gave gave code, P13BO, ONE READER SAID IGNITION FAULT but both said they diagnostics were not in their library. Ialso dont know for sure how to check tthe crank sensor or the resistance value
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Sonnyscars
January 12, 2010.




Hello .. thanks for the donation .. much appreciated

P1380 is VCT malfunction (Variable Cam Timing) ... I would start by checking or replacing the CMP (camshaft position sensor) .. I would then check the CKP (crankshaft position sensor)

IGNITION SYSTEM
Ignition timing and spark distribution are controlled by ECM according to sensor inputs. Ignition timing is controlled primarily as a function of engine load and speed. Engine load is sensed by Mass Airflow (MAF) sensor. Engine speed is sensed by a Crankshaft Position (CKP) sensor. The ECM processes inputs from the sensors and accesses ignition timing from the ignition timing strategy. Individual ignition coils are located above each spark plug. ECM incorporates the primary circuit for each coil and provides switching for each primary circuit. The correct firing sequence and timing of the ignition coils is determined by ECM from cylinder synchronization input provided by the Camshaft Position (CMP) sensor.

DTC P0340: CAMSHAFT POSITION SENSOR CIRCUIT MALFUNCTION
NOTE:After each repair, clear DTCs. See CLEARING CODES/PCM RESET PROCEDURE under SELF-DIAGNOSTIC SYSTEM. Turn ignition off and then on. Read DTCs to verify repair is complete. For DLC and PCM connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagrams, see WIRING DIAGRAMS .

Using scan tool, read DTCs. If DTC P0340 is present, turn ignition off. Ensure CMP sensor harness and connectors are not damaged and connections are okay. Repair as necessary. If harness and connectors are okay, go to next step.
Ensure CMP sensor is installed correctly. Repair as necessary. Check for damaged CMP sensor. Replace as necessary. If CMP sensor is okay, clear DTCs. Turn ignition off and then on. Read DTCs. If DTC P0340 is not present, repair is complete. If DTC P0340 is present, replace PCM.

DTC P0335: CKP SENSOR CIRCUIT MALFUNCTION
NOTE:After each repair, clear DTCs. See CLEARING CODES/PCM RESET PROCEDURE under SELF-DIAGNOSTIC SYSTEM. Turn ignition off and then on. Read DTCs to verify repair is complete. For DLC and PCM connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagrams, see WIRING DIAGRAMS .

Using scan tool, read DTCs. If DTC P0335 is present, turn ignition off. Ensure CKP sensor harness and connectors are not damaged and connections are okay. Repair as necessary. If harness and connectors are okay, go to next step.
Ensure CKP sensor is installed correctly. Repair as necessary. Check for damaged CKP sensor reluctor ring on crankshaft. Repair as necessary. If reluctor ring is okay, check for magnetic debris on reluctor ring. Repair as necessary. If reluctor ring is okay, disconnect CKP sensor harness connector. Using a DVOM, check the following:
On 1996-1997 XJ6 and XJR models, check for continuity of White wire between CKP sensor connector terminal No. 1 and PCM Black connector terminal No. 23, and of Orange wire between CKP sensor connector terminal No. 2 and PCM Black connector terminal No. 26.
On all other models, check for continuity of Red wire between CKP sensor connector terminal No. 1 and PCM Black connector terminal No. 23, and of Blue wire between CKP sensor connector terminal No. 2 and PCM Black connector terminal No. 26.
Repair wiring as necessary. If wiring is okay, go to next step.
Check the following:
On 1996-1997 XJ6 and XJR models, check White wire for short circuit to ground at CKP sensor connector terminal No. 1.
On all other models, check Red wire for short circuit to ground at CKP sensor connector terminal No. 1.
Repair wire as necessary. If wire is okay, replace CKP sensor. Clear DTCs. Turn ignition off and then on. Read DTCs. If DTC P0335 is not present, repair is complete. If DTC P0335 is present, replace PCM.
DTC P0336: CKP SENSOR CIRCUIT MALFUNCTION
NOTE:After each repair, clear DTCs. See CLEARING CODES/PCM RESET PROCEDURE under SELF-DIAGNOSTIC SYSTEM. Turn ignition off and then on. Read DTCs to verify repair is complete. For DLC and PCM connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagrams, see WIRING DIAGRAMS .

Using scan tool, read DTCs. If DTC P0336 is present, turn ignition off. Ensure CKP sensor harness and connectors are not damaged and connections are okay. Repair as necessary. If harness and connectors are okay, go to next step.
Check for damaged CKP sensor reluctor ring on crankshaft. Repair as necessary. If reluctor ring is okay, check for magnetic debris on reluctor ring. Repair as necessary. If reluctor ring is okay, replace CKP sensor. Clear DTCs. Turn ignition off and then on. Read DTCs. If DTC P0336 is not present, repair is complete. If DTC P0336 is present, replace PCM.


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Dave H
Jan 13, 2010.


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