Code No. 52 Valve Relay System (Off Problem) - Mitsubishi PAJERO Workshop Manual

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Code No. 52 Valve relay system (OFF problem)

This code is output if the ABS-ECU judges that there is a valve relay OFF
problem when the valve relay is on and power is supplied to the solenoid valve.
NOTE
When reading the diagnosis codes using the ABS warning lamp (Refer to P.35B-5.), the valve relay
connector is disconnected during inspection, with the result that this problem code will be output in addition
to any other problem codes.
After the problem locations indicated by the problem diagnosis codes have been checked and repaired
but the ABS warning lamp remains illuminated and no diagnosis codes other than code No. 52 are displayed,
there is probably a malfunction of the valve relay system. In this case, carry out the following inspection.
Check the ABS valve relay (Refer to P.35B-28).
Measure at ABS valve relay connector B-21X.
D Disconnect the connector and measure at the harness
side.
D Ignition switch: ON
(1) Voltage between 1 and body earth
OK: System voltage
(2) Voltage between terminal 5 and body earth
OK: System voltage
Measure at ABS-ECU connector E-107.
D Disconnect the connector and measure at the harness
side.
D Ignition switch: ON
D Voltage between terminal 37 and body earth
OK: System voltage
Check the following connectors: B-17, B-18, B-21X, E-107
OK
Check the trouble symptoms.
OK
Check the harness wire, and repair if necessary.
D Between ABS valve relay and HBB and ABS-ECU terminal
No. 48
Replace the ABS-ECU.
ABS <4WD> -
OK
OK
OK
NG
Repair
OK
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Troubleshooting
Probable cause
D Malfunction of harness or connector
D Malfunction of ABS valve relay
D Malfunction of the ABS-ECU
NG
Replace the ABS valve relay.
(1)NG
Check the following connectors: B-21X, D-32 <R.H.D.>,
D-128, D-208, D- 210 <R.H.D.>, D-213 <L.H.D.>, E- 13
OK
Check the trouble symptoms.
(2)NG
NG
Check the harness wire, and repair if necessary.
D Between ignition switch and ABS valve relay
Check the following connector: B-21X
OK
Check the trouble symptoms.
NG
Check the harness wire, and repair if necessary.
D Between fusible link No. 8 and the ABS valve relay
NG
Check the following connectors: E-107, B-21X
OK
Check the trouble symptoms.
NG
Check the harness wire, and repair if necessary.
D Between ABS-ECU and ABS valve relay
NG
Repair
35B-17
NG
Repair
NG
Repair
NG
Repair