Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 760

Code No.71 Lateral G sensor system
This code is output in the following cases.
D If lateral G sensor output voltage is less than 0.5 V or more than 4.5 V
<open circuit or short circuit in the lateral G sensor circuit>
D If the lateral G sensor output voltage do not change
<lateral G sensoroutput voltage: fixed>
Measure at the lateral G sensor connector D-33.
D Disconnect the connector, and measure at the harness side
connector.
(1) Voltage between 1 and body earth (Ignition switch: ON)
OK: System voltage
(2) Continuity between 3 and body earth
OK: Continuity
<Horizontal position>
MB991348
D-33 Harness
side connector
D Remove the lateral G sensor. (Refer to P.35B-35.)
D Connect the special tool between the harness side connector
D-33 and the lateral G sensor.
D Ignition switch: ON
D Voltage between 2 and body earth
OK: 2.4 - 2.6 V (horizontal position)
OK: 3.3 - 3.7 V (with front mark downward)
Check the following connectors: B-123, C-128, D-33
OK
Check the trouble
symptom.
NG
Check the harness wire.
D Between lateral G sensor and ABS-ECU
OK
Replace the hydraulic unit and ABS-ECU.
ABS <4WD> -
OK
<With front
mark downward>
OK
NG
Repair
NG
Repair
Troubleshooting
Probable cause
D Malfunction of lateral G sensor
D Malfunction of wiring harness or connector
D Malfunction of hydraulic unit and ABS-ECU
(1) NG
Check the following connectors: D-33, C-210, C-213
OK
(2) NG
Check the trouble
symptom.
NG
Check the harness wire, and repair if necessary.
D Between ignition switch and lateral G sensor
Check the following connectors: B-123, C-128, D-33
OK
Check the trouble
symptom.
NG
Check the harness wire.
D Between lateral G sensor and ABS-ECU
OK
Replace the hydraulic unit and ABS-ECU.
NG
Replace the lateral G sensor.
35B-13
NG
Repair
NG
Repair
Repair
NG
Repair