
REAR AXLE –
Troubleshooting <AYC>
27-7
4. INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No. 12: Power supply voltage (valve power supply)
system
Probable cause
This code is output when the AYC-ECU power supply voltage drops below, goes
beyond, a specified level.
D
Defective harness or connector
D
Defective battery
D
Defective AYC-ECU
NOTE
Refer to the corresponding item if any other diagnosis code is being output.
Is the battery voltage correct?
NG
Replace
OK
Measure at B-96 AYC-ECU connector.
D
Disconnect the connector and
measure at the harness side.
D
Ignition switch: ON
D
Voltage across 31 and body ground
OK: Battery voltage
NG
Check the following connectors:
B-96, B-94, B-49, B-75, B-76
OK
Check the trouble symptom.
NG
Check and repair harness between
ignition switch (IG
2
) and AYC-ECU.
OK
Replace AYC-ECU.
NG
Repair
Code No. 21, 22, 23, 24: Wheel speed sensor system
Probable cause
This code is output if any one of three wheel speed sensors fails to provide an input
even after the other wheel exceeded 8 km/h.
D
Defective harness or connector
D
Defective ABS-ECU
D
Defective AYC-ECU
<Vehicles with ABS>
OK
Replace AYC-ECU.
OK
Replace ABS-ECU.
NG
Check harness between AYC-ECU
and ABS-ECU.
NG
Repair
OK
Check the trouble symptom.
Is an ABS diagnosis code No. 21, 22,
23, or 24 output?
YES
Troubleshooting
NO
Measure at B-95 AYC-ECU connector.
D
Disconnect the connector and
measure at the harness side.
D
Ignition switch: ON
D
Turn tire at 1/2 to 1 revolution/sec.
D
Voltage across 6/7/8/9 and body
ground
OK: 42 mV or more (when mea-
sured with a circuit tester)
120 mV-P or more (when
measured with an oscillo-
scope)
OK
Check the following connector:
B-95
OK
Check the trouble symptom.
NG
Check the following connectors:
B-24, B-95
NG
Repair
NG
Repair
Содержание LANCER EVOLUTION-IV 1998
Страница 4: ...NOTES...
Страница 15: ...B 11 NOTES...
Страница 19: ...B 15 NOTES...
Страница 21: ...SINGLE PART INSTALLATION POSITION ECU A B 17 ECU Name Symbol AYC ECU A...
Страница 27: ...SINGLE PART INSTALLATION POSITION Ground 1 2 5 6 B 23 GROUND 1 2 5 6 7 14 15 13 11 12 10 9...
Страница 28: ...SINGLE PART INSTALLATION POSITION Ground 7 9 10 11 12 11 12 13 14 15 B 24...
Страница 35: ...CIRCUIT DIAGRAM Starting System BATTERY IGNITION SWITCH ST ENGINE CONTROL SYSTEM STARTER B 31 STARTING SYSTEM...
Страница 57: ...B 53 NOTES...
Страница 67: ...B 63 NOTES...
Страница 75: ...B 71 NOTES...
Страница 91: ...B 87 NOTES...
Страница 116: ...SINGLE PART INSTALLATION POSITION Ground Cable Ground C 18 GROUND CABLE GROUND...
Страница 123: ...CIRCUIT DIAGRAM Starting System BATTERY IGNITION SWITCH ST ENGINE CONTROL SYSTEM STARTER C 25 STARTING SYSTEM...
Страница 135: ...C 37 NOTES...
Страница 151: ...C 53 NOTES...
Страница 161: ...C 63 NOTES...
Страница 171: ...C 73 NOTES...
Страница 177: ...C 79 NOTES...
Страница 185: ...MODELS 2 00 1 GENERAL CONTENTS...
Страница 222: ...LUBRICANTS 2 ENGINE OIL COOLER 2 12 1 ENGINE LUBRICATION CONTENTS...
Страница 299: ...MANUAL TRANSMISSION 22A MANUAL TRANSMISSION OVERHAUL 22B 22 1 MANUAL TRANSMISSION CONTENTS...
Страница 300: ...22 2 NOTES...
Страница 313: ...MANUAL TRANSMISSION OVERHAUL General Information 22B 3 SECTIONAL VIEW With Front Limited Slip Differential Front LSD...
Страница 362: ...26 1 FRONT AXLE CONTENTS SERVICE SPECIFICATIONS 2 SPECIAL TOOLS 2 AXLE HUB AND KNUCKLE 3...
Страница 420: ...ROLL STOPPER AND CENTERMEMBER 2 32 1 POWER PLANT MOUNT CONTENTS...
Страница 448: ...BASIC BRAKE SYSTEM 35A ANTI LOCK BRAKING SYSTEM ABS 35B 35 1 SERVICE BRAKES CONTENTS...
Страница 449: ...35 2 NOTES...
Страница 514: ...EXTERIOR Front Bumper EVOLUTION V 51 4 FRONT BUMPER EVOLUTION V REMOVAL AND INSTALLATION Front bumper assembly...
Страница 518: ...EXTERIOR Aero Parts EVOLUTION IV 51 8 7 8 Rear spoiler removal steps 7 Rear spoiler 8 High mount stop lamp...