Ok first off hello all, a newbie here trying to fix there volvo.
I know i dont have a 480 (ive got a 440 turbo) but hope you guys will be able to help me with the same family of car.
My ABS is nackerd (failed my mot for it) have been able to read faukt codes and got the following :-
4-1-1 Inlet valve to left front wheel
4-1-2 Outlet valve to left front wheel
4-1-3 Inlet valve to right front wheel
4-1-4 Outlet valve to right front wheel
4-2-1 Inlet valve to left rear wheel
4-2-2 Outlet valve to left rear wheel
4-2-3 TRACS valve 1
4-3-1 Inlet valve to right rear wheel
4-3-2 Outlet valve to right rear wheel
4-3-3 TRACS valve 2
Having cleared the ECU i now get the following remainng faults
4-1-1 Inlet valve to left front wheel
4-1-2 Outlet valve to left front wheel
4-2-1 Inlet valve to left rear wheel
4-2-2 Outlet valve to left rear wheel
4-2-3 TRACS valve 1
4-3-3 TRACS valve 2
Could anyonr explain to me what they mean in lay man terms, and how to fix the faults.
Dont want to have to scrap a good example of the car (despite 105k on the clock NO rust!)
Many thanks
Bryan
Yet another MKIV ABS problem
Moderators: jifflemon, coyote1980, Rachel
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chris1roll
- Friend of Club 480 Europe
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0DTC information 4–1–X, 4–2–1, 4–2–2, 4–2–3, 4–3–1, 4–3–2, 4–3–3
Condition
Meaning of the fault code
The fault codes shown above indicate that the connector of the solenoid type hydraulic valve or the trigger transistor that valve is interrupted or short circuited.
Apparently.
If you can get some second hand bits, relay, ecu, or the entire thing, then swap it over, otherwise I would say tek it to a good dealers or indie and get them to have a look. Bloody ABS and electronics make life so bastard hard!
Oh, and don't worry about your being a 440, so's Amy's car
2001 V70 XC 2.5T
1989 744 GL Auto
1989 744 GL Auto
Ok been looking on the web for 6 hours and have managed to find this! :-
The Teves MK IV system
The system has 2, 3 or 4 pairs of valves. Each pair consists of one inlet
valve and one outlet valve. An inlet valve is positioned between the main
brake cylinder and a wheel cylinder. It is opened when the ABS-system is
passive and closed during the pressure maintenance and reduction
phases. An outlet valve is sited between a wheel cylinder and the brake
fluid reservoir. This only opens during the pressure reduction phase.
Phase ------------------------Inlet valve--------- Outlet valve
Passive ----------------------- open 12 V --------- closed 12 V
Pressure maintenance ---- closed 0 V --------- closed 12 V
Pressure reduction --------- closed 0 V --------- open 0 V
The hydraulic part of the system includes an electric pump, which provides
high pressure brake-fluid for building up the pressure after the pressure
reduction phase. When ABS is combined with TRACS an additional valve is
included for this funktion. The system has two or four wheel speed sensors.
Check of valves and their wiring, ABS pin 2, 18, 20, 21, 36,
37, 38, 54 and 55
The braking pressure is regulated in the Teves MK IV ABS system using
an inlet valve and an outlet valve for each brake circuit. The system has 2,3 or 4 brake circuits. Thus it has 4, 6 or 8 valves for ABS-regulation. If the ABS-system is combined with TRACS it also contains a TRACS-valve. All valves are controlled by the ABS control unit through separate outputs.
1. Disconnect the ABS adapter from the wiring harness. Connect the
Autodiagnos Break-out Box (A0201/A0202) and the 55-pin adapter (A020209)
to the car’s wiring harness only. Do not reconnect the control unit.
2. If a fault is indicated for all valves, measure the resistance between the
main relay (see workshop manual) and ABS control unit pin 3.
Desired value: 0–1 ohm
3. If the error text shows a fault in one individual valve, measure the
resistance across the valve block (see relevant workshop manual for the
pin no. of the car you are working on).
Desired value: 3–5 ohm (outlet valves)
Desired value: 6–8 ohm (TRACS- and inlet valves)
Possible cause of fault: Valve block.
4. Measure the resistance of the cable connecting the valve reported
incorrect and the ABS control unit. (see relevant workshop manual for
the pin no. of the car you are working on). Desired value: 0–1 ohm.
Hope this might help some people, but would love to have a wiring diag for the late 400 series ABS so i can confirm the pin numbers and make my checks!
i would give a web link to my recorces but not allowed to do so (coz im a newbie!)
regards
Bryan
The Teves MK IV system
The system has 2, 3 or 4 pairs of valves. Each pair consists of one inlet
valve and one outlet valve. An inlet valve is positioned between the main
brake cylinder and a wheel cylinder. It is opened when the ABS-system is
passive and closed during the pressure maintenance and reduction
phases. An outlet valve is sited between a wheel cylinder and the brake
fluid reservoir. This only opens during the pressure reduction phase.
Phase ------------------------Inlet valve--------- Outlet valve
Passive ----------------------- open 12 V --------- closed 12 V
Pressure maintenance ---- closed 0 V --------- closed 12 V
Pressure reduction --------- closed 0 V --------- open 0 V
The hydraulic part of the system includes an electric pump, which provides
high pressure brake-fluid for building up the pressure after the pressure
reduction phase. When ABS is combined with TRACS an additional valve is
included for this funktion. The system has two or four wheel speed sensors.
Check of valves and their wiring, ABS pin 2, 18, 20, 21, 36,
37, 38, 54 and 55
The braking pressure is regulated in the Teves MK IV ABS system using
an inlet valve and an outlet valve for each brake circuit. The system has 2,3 or 4 brake circuits. Thus it has 4, 6 or 8 valves for ABS-regulation. If the ABS-system is combined with TRACS it also contains a TRACS-valve. All valves are controlled by the ABS control unit through separate outputs.
1. Disconnect the ABS adapter from the wiring harness. Connect the
Autodiagnos Break-out Box (A0201/A0202) and the 55-pin adapter (A020209)
to the car’s wiring harness only. Do not reconnect the control unit.
2. If a fault is indicated for all valves, measure the resistance between the
main relay (see workshop manual) and ABS control unit pin 3.
Desired value: 0–1 ohm
3. If the error text shows a fault in one individual valve, measure the
resistance across the valve block (see relevant workshop manual for the
pin no. of the car you are working on).
Desired value: 3–5 ohm (outlet valves)
Desired value: 6–8 ohm (TRACS- and inlet valves)
Possible cause of fault: Valve block.
4. Measure the resistance of the cable connecting the valve reported
incorrect and the ABS control unit. (see relevant workshop manual for
the pin no. of the car you are working on). Desired value: 0–1 ohm.
Hope this might help some people, but would love to have a wiring diag for the late 400 series ABS so i can confirm the pin numbers and make my checks!
i would give a web link to my recorces but not allowed to do so (coz im a newbie!)
regards
Bryan