Hi, Does the -13 suffix on the code point to something more specific?
Technical Glow plug relay location
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Technical Glow plug relay location
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Hi
The 6th and 7th digits of the 7 digit DTCs used from 2013 onwards normally have the following meanings, but there is nothing to stop Fiat from allocating them to something else, so treat with caution:
00 = Not specified
04 = Open
11 = Short to ground
12 = Short to B+
13 = Open
14 = Short to ground or open
15 = Short to B+
16 = Circuit voltage below threshold
17 = Circuit voltage above threshold
18 = Current below threshold
31 = No signal
44 = Data memory failure
47 = Controller failure
49 = Internal electronic failure
51 = Not programmed
62 = Signal comparison failure
64 = Plausibility failure
72 = Actuator stuck closed
74 = Actuator slipping
77 = Commanded position not achievable
7E = Actuator stuck on
1A = Circuit resistance below threshold
1C = Voltage out of range
1D = Current out of range
23 = Signal stuck low
24 = Signal stuck high
27 = Single rate of change above threshold
29 = Performance signal invalid
2A = Stuck in range
2B = Signal cross coupled
2F = Signal erratic
7F = Actuator stuck off
85 = Signal above allowable range
87 = Missing communication message
93 = Performance no operation
96 = Component internal failure
9C = Low insufficient flow
9E = Stuck on
The 6th and 7th digits of the 7 digit DTCs used from 2013 onwards normally have the following meanings, but there is nothing to stop Fiat from allocating them to something else, so treat with caution:
00 = Not specified
04 = Open
11 = Short to ground
12 = Short to B+
13 = Open
14 = Short to ground or open
15 = Short to B+
16 = Circuit voltage below threshold
17 = Circuit voltage above threshold
18 = Current below threshold
31 = No signal
44 = Data memory failure
47 = Controller failure
49 = Internal electronic failure
51 = Not programmed
62 = Signal comparison failure
64 = Plausibility failure
72 = Actuator stuck closed
74 = Actuator slipping
77 = Commanded position not achievable
7E = Actuator stuck on
1A = Circuit resistance below threshold
1C = Voltage out of range
1D = Current out of range
23 = Signal stuck low
24 = Signal stuck high
27 = Single rate of change above threshold
29 = Performance signal invalid
2A = Stuck in range
2B = Signal cross coupled
2F = Signal erratic
7F = Actuator stuck off
85 = Signal above allowable range
87 = Missing communication message
93 = Performance no operation
96 = Component internal failure
9C = Low insufficient flow
9E = Stuck on
Hi, Thanks Anthony, that's good info. so if its the feedback (Pin 9 Engraved D1 Whi/Red Fault Report to ECU, High 12V = Fault) that is open circuit does that mean the ecu is not seeing a high or low voltage and can't determine the state of the relay. due to no feedback ?
I am going to do a current test this morning to each individual glow plug to see if there is much difference. I have a Sealey TA125 current tester so I can de-rate the F02 50a fuse down to say 20a and link each G1-G4 pin in turn to pin 30.+ 12v. I won't need the ignition on so a short test (few secs) should be ok. I can do this from the relay base quite easily, I need to know exactly what is wrong before I have to strip the front of the vehicle off and what ever else to get to the glow plugs.
I am going to do a current test this morning to each individual glow plug to see if there is much difference. I have a Sealey TA125 current tester so I can de-rate the F02 50a fuse down to say 20a and link each G1-G4 pin in turn to pin 30.+ 12v. I won't need the ignition on so a short test (few secs) should be ok. I can do this from the relay base quite easily, I need to know exactly what is wrong before I have to strip the front of the vehicle off and what ever else to get to the glow plugs.
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Hi
Your current test approach sounds a good one. From memory, each plug draws something like 15 amps when cold which drops down to 10 Amps once it heats up after 5 or 10 seconds. They are nominally rated at 11 volts, but a battery not being charged won't be far different once you allow for a bit of drop in the wiring.
I am assuming here that the plugs haven't been updated by Fiat over the years to a type that needs a lower voltage via some sort of controller.
Your current test approach sounds a good one. From memory, each plug draws something like 15 amps when cold which drops down to 10 Amps once it heats up after 5 or 10 seconds. They are nominally rated at 11 volts, but a battery not being charged won't be far different once you allow for a bit of drop in the wiring.
I am assuming here that the plugs haven't been updated by Fiat over the years to a type that needs a lower voltage via some sort of controller.
Hi, 12v as far as I can tell, 12v on pin 30 relay from f02, harness colours from relay same as plug on the engine where it splits into 2 pairs to the glow plugs.
Tests done- G1/G3/G4 Resistance Cold 1 ohm. G2 Resistance 0.6 ohm
G1/G3/G4 - Current test 17A down to 13A in about 2 secs
G2 blew my 20a test fuse ( so greater than 20a) as soon as I connected.
Relay Part No. Bosch 0 281 003 171
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Hi
That's pretty conclusive. I had one plug fail short circuit on my 2008 X250 Ducato about 4 years ago. I used a workaround, which involved wiring a 1 Ohm metalclad power resistor (on a heatsink) in place of the faulty plug so that the Relay over current trip doesn't happen and the current self-test "sees" the right current and therefore passes. I never use the vehicle in weather cold enough to need all 4 plugs, and it seems to start just fine with only 3.
The alternative, given the age of the vehicle, would have almost certainly been specialist extraction of the seized plug and a £££ bill with very little benefit to me.
You may find that your plug can be extracted without issue, given that the vehicle is fairly new.
That's pretty conclusive. I had one plug fail short circuit on my 2008 X250 Ducato about 4 years ago. I used a workaround, which involved wiring a 1 Ohm metalclad power resistor (on a heatsink) in place of the faulty plug so that the Relay over current trip doesn't happen and the current self-test "sees" the right current and therefore passes. I never use the vehicle in weather cold enough to need all 4 plugs, and it seems to start just fine with only 3.
The alternative, given the age of the vehicle, would have almost certainly been specialist extraction of the seized plug and a £££ bill with very little benefit to me.
You may find that your plug can be extracted without issue, given that the vehicle is fairly new.
Hi, I agree, That the plug is short circuit, I've left F02 out for the moment. The error code P0683-13 Preheating control unit (feedback) Open circuit.
makes no sense to me if the glow plug is short.