REAR AXLE –
Troubleshooting <AYC>
27-18
Code No. 81: AYC relay system
Probable cause
This code is output when the coil circuit of the AYC relay is open- or short-circuited.
D
Defective AYC relay
D
Defective harness or connector
D
Defective AYC-ECU
NG
Check and repair the harness between
AYC relay and body ground.
OK
Check the trouble symptom.
OK
Replace AYC-ECU.
NG
Check the harness between AYC relay
and AYC-ECU.
NG
Repair
NG
Check the trouble symptom.
OK
Check the following connectors:
B-96, B-126
NG
Repair
OK
Measure at A-126 AYC relay connec-
tor.
D
Disconnect the connector and
measure at the harness side.
D
Continuity across 1 and body
ground
OK: Conducting
NG
Check the following connector:
A-126
NG
Repair
Check the AYC relay.
(Refer to P.27-52.)
NG
Replace the AYC relay.
Summary of Contents for Lancer Evolution IV
Page 1: ...Pub No S9806CNCP9 WORKSHOP MANUAL EVOLUTION IV EVOLUTION V...
Page 3: ...MODELS 2 00 1 GENERAL CONTENTS...
Page 40: ...LUBRICANTS 2 ENGINE OIL COOLER 2 12 1 ENGINE LUBRICATION CONTENTS...
Page 117: ...MANUAL TRANSMISSION 22A MANUAL TRANSMISSION OVERHAUL 22B 22 1 MANUAL TRANSMISSION CONTENTS...
Page 179: ...26 1 FRONT AXLE CONTENTS SERVICE SPECIFICATIONS 2 SPECIAL TOOLS 2 AXLE HUB AND KNUCKLE 3...
Page 237: ...ROLL STOPPER AND CENTERMEMBER 2 32 1 POWER PLANT MOUNT CONTENTS...
Page 265: ...BASIC BRAKE SYSTEM 35A ANTI LOCK BRAKING SYSTEM ABS 35B 35 1 SERVICE BRAKES CONTENTS...