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1、650WL01LIGHTING LIGHTING SYSTEM (April, 2003)6511678Author : Date :2004 COROLLA (RM1037U)LIGHTING SYSTEM (Apr., 2003)PRECAUTION1. PRECAUTION OF HEADLIGHT BULB REPLACEMENT(a) If even a thin film of oil is left on the surface of the halogen lamp, its service life will be shortened be-cause the lamp wi
2、ll be burn at a higher temperature.(b) Handle any halogen lamp with great care. Dropping, hitting or damaging the bulb, in any way, mayresult in it exploding and scattering because the internal pressure is high.(c) Always prepare a new bulb for immediate replacement. While replacing the bulb, the le
3、ns may attractdust and moisture if removed from the vehicle for too long.(d) Always use a bulb of the same wattage for replacement.(e) Firmly reinstall the socket after bulb replacement. The lens may become cloudy or the light cavity mayfill with water through the gaps around the socket.650WM01652LI
4、GHTING LIGHTING SYSTEM (April, 2003)1679Author : Date :2004 COROLLA (RM1037U)PROBLEM SYMPTOMS TABLEHINT:Use the table below to help determine the cause of the problem. The numbers indicate the priority of thelikely cause of the problem. Check each part in order. If necessary, replace these parts.1.
5、HEADLAMP AND TAIL LAMPSymptom Suspected Area See page”LOBeam” does not come on (One side).1. Bulb2. HEAD RH LWR fuse or HEAD LH LWR fuse3. Wire harness”LOBeam” does not come on (All).1. HEAD Relay2. Headlamp dimmer switch assy3. Daytime running light relay4. Wire harness657657654”HIBeam” does not co
6、me on (One side).1. Bulb2. HEAD RH UPR fuse or HEAD LH UPR fuse3. Wire harness”HIBeam” does not come on (All).1. DIMMER relay2. Headlamp dimmer switch assy3. Daytime running light relay4. Wire harness657657654”Flash” does not operate (All).1. Headlamp dimmer switch assy2. Daytime running light relay
7、3. Wire harness657654Headlamp is dark.1. Bulb2. Wire harnessOnly one tail lamp comes on.1. Bulb2. Wire harnessBoth tail lamps do not come on (Headlamps are normal).1. TAIL fuse2. TAIL relay (USA only)3. Headlamp dimmer switch assy4. Daytime running light relay (USA only)5. Wire harness657657654Both
8、tail lamps do not come on (Headlamps do not come on).1. Headlamp dimmer switch assy2. Wire harness657Headlamp does not come on with engine running, parking brakereleased, and light control switch off.1. HEAD relay2. Generator3. Parking brake switch4. Daytime running light relay5. Wire harness6576542
9、. FRONT FOG LAMP SYSTEMSymptom Suspected Area See pageFront fog lamps do not come on with light control switch in theHEAD position (Headlamps are normal).1. FOG fuse2. FOG relay3. Headlamp dimmer switch assy4. Wire harness657657Only one front fog lamp does not come on.1. Bulb2. Wire harnessLIGHTING
10、LIGHTING SYSTEM (April, 2003)6531680Author : Date :2004 COROLLA (RM1037U)3. TURN SIGNAL AND HAZARD WARNING SYSTEMSymptom Suspected Area See page”Hazard” and ”Turn” do not come on.1. HAZARD fuse2. Turn signal flasher relay3. Wire harness654Hazard warning lamp does not come on.(Turn is normal)1. Hazar
11、d warning signal switch assy2. Wire harness657Turn signal does not come on.(Hazard is normal)1. Headlamp dimmer switch assy2. Wire harness657Turn signal does not come on in one direction.1. Headlamp dimmer switch assy2. Wire harness657Only one bulb does not come on.1. Bulb2. Wire harness4. STOP LAMP
12、 SYSTEMSymptom Suspected Area See pageBoth stop lamps do not come on.1. STOP fuse2. Stop lamp switch assy3. Wire harness657Stop lamp always remains ON.1. Stop lamp switch assy2. Wire harness657Stop lamp does not come on (One side).1. Bulb2. Wire harness5. BACK UP LAMP SYSTEMSymptom Suspected Area Se
13、e pageBoth back up lamps do not come on.1. GAUGE fuse2. Back up lamp switch (M/T)3. Park/Neutral Position switch (A/T)4. Wire harness65705379Both back up lamps remain always ON.1. Back up lamp switch (M/T)2. Park/Neutral Position switch (A/T)3. Wire harness65705379Back up lamp does not come on (One
14、side).1. Bulb2. Wire harness6. INTERIOR LAMP SYSTEMSymptom Suspected Area See pageRoom lamp do not come on.1. Bulb2. Wire harness7. LIGHT CONTROL RHEOSTAT SYSTEMSymptom Suspected Area See pageLight control rheostat system does not operate.1. Light control rheostat2. Wire harness657650WN01E15683Conne
15、ctor Front View:T2654LIGHTING LIGHTING SYSTEM (April, 2003)1681Author : Date :2004 COROLLA (RM1037U)ONVEHICLE INSPECTION1. INSPECT TURN SIGNAL FLASHER RELAY CIRCUIT(a) Disconnect the connector from the turn signal flasherrelay and inspect the connector on wire harness side asshown in the chart.Stand
16、ard:Tester connection Condition Specified condition7 Ground Constant Below 1 W1 Ground Ignition switch ON 10 to 14 V1 Ground Ignition switch OFF Below 1 V4 Ground Constant 10 to 14 V(b) Connect the connector to the turn signal flasher and in-spect the wire harness side connector from the back sideas shown in the chart.Standard:Tester connection Condition Specified condition2 Gro
