Pao fuse 1 vcm code - 1992 Jaguar XJ6

car drives runs perfectly and transmission and headlamp?
does CEL glow key on? check engine lamp(it self tests then)
fuses first. F4 = gage fuse/ 6 fuses to make VCM run.
scan the PCM
check for 12vd top the cluster power pins.
the VCM sends speed data (serial ) to the cluster brain.
speed vss1 is digital sensor, on trans.
tach is pure VCM/PCM signal sent to cluster.
Id say F4 blow. if car drives ok, not told wow./

not S10
dead hv coil means input to coil is dead.
on this car, 1996 we look at the distributor wiring ,et al. to know what's up with that.
and fuses tops the list all EFI AND spark fuses. and ecu.(VCM)
the VSM needs 5 good fuses !!! #4,5,9,10,12
then learn to scan the VCM on any 96 or newer USA car it has
the new the OBD2 scan port (16pin) just like now.
see DTC errors cranked, p03xx errors are all that.
CMP error , CKP errors end spark for sure.
crank sensor or cam senors, 3 wire HALL sensors and there and the best kind is HALL.
the VCM (ecu/pcm) fires the spark control modlen and it the HV coil.
if CMP and CKP are not dead.
crank for 10second (release not off) and release. if either 2 sensor fail now the
scan tool tells you so.. DTC p03xx code errors.
cam must spin, and not be timed by kids.(or hold my beer)

• bad fuses (x5)
• bad cmp/ckkp (dead cam timed all wrong)
• bad spark control module
• bad HV coil
• bad wires to all this. page. of listed things.
• bad VCM (if obd2 fails consider this, if no COMMS)
• rusty or loose connectors

is CEL/MIL/SES lamp in cluster dead it must glow keyon.
or lamp dead, vcm dead or fuse to ecu x5 dead.

hint1,use modern scan too, not one from 1996 era
many the only did 1 or 3 uSA cars then, (lack of 3 ports is why)
all; modern tools work here, 2005 year up

DTC P1415 Secondary Air Injection (AIR) System Bank 1

Circuit Description
A secondary air injection (AIR) pump is used on this vehicle to lower tail pipe emissions on start-up. The vehicle control module (VCM) supplies a ground to the AIR pump relay, which energizes the AIR pump and the AIR solenoid.
Test one (passive) consists of the following:
When the AIR pump is enabled, the VCM monitors the HO2S voltage. If the HO2S voltages go below a threshold, the VCM interprets this as an indication that the AIR system is operational.
When the AIR Pump is disabled, the VCM monitors the HO2S voltages. The HO2S voltages should increase above a threshold and switch normally.
If the VCM did not sense more than a predetermined amount of HO2S rich switches, a malfunction will be reported. If both of these test indicate a pass, no further action is taken. If one of the above tests failed or is inconclusive, the diagnostic will proceed to test 2.
Test 2 (active) consists of the following:
During this test the VCM will activate the AIR pump during closed loop operation. When the AIR system is activated, the VCM will monitor the HO2S voltages and short term fuel trim values for both banks of the engine. If the AIR System is operating properly, the HO2S voltages should go low and the short term fuel trim should go high.
The VCM determines if the HO2S voltages return to above a rich threshold when the AIR pump is disabled. If the VCM determines that the HO2S voltages for BOTH banks did not respond as expected during the tests, DTC P0410 will set. If only one sensor responded, the VCM will set either DTC P1415 or P1416 to indicate on which bank the AIR system is inoperative.

Something that fuse powers is shorted to ground . Need to look at wiring diagrams , service repair manual , power distribution diagrams , disconnect everything it powers - one circuit at a time till fuse doesn't blow any more . Then find the short , videos on youtube showing how . EGN A ???? IGN A fuse . ENG 1 or 2
Underhood Fuse-Relay Center Fuse/Circuit Breaker
Rating
Description
ABS Fuse M4-N4
60A
Electronic Brake Control Module
A/C Fuse K11-L12
10A
A/C Compressor Clutch Relay
AUX A Fuse P7-R7
30A
Upfitter Provisions
AUX B Fuse P8-R8
30A
Upfitter Provisions
BATT Fuse M7-N7
50A
Instrument Panel Fuse Block
BLOWER Fuse M3-N3
60A
Blower Motor, IP Fuse Block
ECM-B Fuse F11-G12
20A
Fuel Pump Relay, VCM, PCM, Fuel Pump and Engine Oil Pressure Gauge Sensor
ECM-1 Fuse H7-J8
20A
Ignition Control Module, Ignition Coil, Camshaft Position Sensor, VCM, Fuel Injectors, Crankshaft Position Sensor
ENG-I Fuse L8-K7
20A
Heated Oxygen Sensors, Mass Air Flow Sensor, Exhaust Gas Recirculation Valve Solenoid, Evaporative Emission Cannister Purge Valve, VCM, Secondary Air Injection Relay, WATER IN FUEL Indicator Sensor, Fuel Heater, Glowplug Relay, Wastegate Solenoid, Crankshaft Position Sensor
HORN Fuse H11-J12
20A
Horn Relay, Underhood Lamp(s)
IGN Fuse F5-G6 (Diesel Only)
20A
PCM, Fuel Solenoid Driver, Engine Shutoff Solenoid
IGN-A Fuse M6-N6
40A
Starter Relay, Ignition Switch
IGN-B Fuse M5-N5
50A
Ignition Switch
IGN-E Fuse F7-G8
10A
A/C Compressor Clutch Relay
LIGHTING Fuse M8-N8
40A
Instrument Panel Fuse Block, Headlamp Switch
LH-HDLP Fuse F1-G2 (Export Only)
10A
Left Hand Low Beam Headlamp
LH-HIBM Fuse F3-G4 (Export Only)
10A
Left Hand High Beam Headlamp
RH-HDLP Fuse H1-J2 (Export Only)
10A
Right Hand Low Beam Headlamp
RH-HIBM Fuse H3-J4
10A
Right Hand High Beam Headlamp
RR BLOWER Fuse K5-L6
30A
Auxiliary Blower Motor Relays
ABS Relay (Expot Only)
--
ABS Warning Indicator Lamp
A/C Relay
--
A/C Compressor Clutch Coil
A. I. R. Relay
--
Air Ijection Reaction Pump Clutch Coil
Fuel Pump Relay
--
Fuel Pump
Horn Relay
--
Horns
Starter Relay
--
Starter Solenoid

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Codes

Print
Stored fault codes may be erased from memory at any time by removing power from the VCM for at least 30 seconds. It may be necessary to clear stored codes during diagnosis to check for any recurrence during a test drive, but the stored codes must be written down when retrieved. The codes may still be required for subsequent troubleshooting. Whenever a repair is complete, the stored codes must be erased and the vehicle test driven to confirm correct operation and repair.

WARNING The ignition switch must be OFF any time power is disconnected or restored to the VCM. Severe damage may result if this precaution is not observed.
Depending on the electrical distribution of the particular vehicle, power to the VCM may be disconnected by removing the VCM fuse in the fusebox, disconnecting the in-line fuse holder near the positive battery terminal or disconnecting the VCM power lead at the battery terminal. Disconnecting the negative battery cable to clear codes is not recommended as this will also clear other memory data in the vehicle such as radio presets.
The following are the codes for the 1994-95 models with the OBD I and OBD II systems.
See Figure 1 through 6

Fig. Fig. 1: DTC chart for 1994 ECM models

Fig. Fig. 2: DTC chart for 1994 PCM models

Fig. Fig. 3: DTC chart for 1994-95 VCM models

Fig. Fig. 4: DTC chart for 1995 PCM models

Fig. Fig. 5: DTC chart for 1995 VCM-A models

ECM B fuse supplies a constant 12v hot at all times to the VCM/PCM and to the fuel pump relay. The fuse is blowing telling you that there is a short to ground somewhere. Try this, take the fuel pump relay out and put a new fuse in. If it doesn't blow put the relay back in and if it blows then try a new relay. The relay may be shorted to ground internaly. Other wise you'll have to trace the wires to the VCM and the pump relay to look for a chafed wire that's contacting metal. The wire coming from the ECM B fuse is orange and has a splice in it going to the pump relay and the VCM/PCM.
Hope this helps.....Andrew

Did you change the camshaft position sensor?

Fuse #1 is for the electrioc cooling fan at the radiator. May just be loose or need re-seating and/or cleaning of the contacts.

The PAO you see on your dash in the VCM (Vehicle Condition Monitor) *is really* -PAD-.

I had the same beacon on my 1991 XJ6, it refers to the brake pads being worn.

Fuse 3 is a notice that there is a misbehaving fuse in your 3rd fuse box, which is located inside the center console (armrest)

Best of Luck!
JeremyM