Shop manual máy đào HuynDai R170W-9 (Phần 7) Phần sự cố
GROUP ELECTRICAL SYSTEM WHEN STARTING SWITCH IS TURNED ON, MONITOR PANEL DISPLAY DOES NOT APPEAR ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No.7, 11 ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Defective cluster Replace YES Check voltage between CN-56 (3) and (5) Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-5-CN-56 Check voltage between NO CN- (3) and (5) Starting switch : ON Voltage : 20~32V Remedy Starting switch : ON Voltage : 20~32V Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-5 (3) -GND or fuse No.7, 11 NO Check voltage YES 20~32V NO 0V CLUSTER FUSE POWER(24V) GND 3 POWER IG(24V) 5 NO.7 FUSE NO.11 CN-56 CN-5 14W96ES01 6-25 COMMUNICATION ERROR FLASHES ON THE CLUSTER (HCESPN 840, FMI 2) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Remedy Defective cluster Replace YES Check voltage between CN-56 (4, 8) and (3) Check voltage between CN-5 (1) and (2) Starting switch : ON Voltage : 2V Starting switch : ON Voltage : 2V Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-56 (4, 8)-CN-5 (1, 2) NO Defective MCU Replace Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-5 (1, 2)- CN-51(23, 33) NO Check voltage YES 2V NO 0V CLUSTER GND 3 MCU RS485 RX 23 RS485 TX RS485 TX 33 RS485 RX CN-51 CN-56 CN-5 14W96ES02 6-26 BATTERY CHARGING WARNING LAMP LIGHTS UP UP(Starting switch : ON) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES YES Check voltage between CN-51 (39) and chassis Check voltage YES between CN-2 (9) and chassis NO Voltage : 20~32V Voltage : 20~32V Check voltage between alternator terminal "2" and chassis Remedy Defective MCU Replace Disconnection in wiring harness or poor contact between CN-51 (39)-CN-2 (9) Repair or replace (after clean) Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-2 (9) alternator terminal "2" NO Engine : Running Voltage : 20~32V Defective alternator Replace NO Check voltage YES 20~32V NO 0V ALTERNATOR MCU B+ 39 P L FI NC G 3~ U CN-74 CN-51 CN-2 17W96ES03 6-27 WHEN COOLANT OVERHEAT WARNING LAMP LIGHTS UP (engine is started) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Remedy Check use HRDT Check or replace Check resistance YES between engine harness connector (15)-(38) Spec : 180Ω~160 kΩ Disconnection in Repair or replace wiring harness or (after clean) poor contact between temp sensor-engine harness connector NO Check resistance between temp sensor (A)-(B) Starting switch : OFF Spec : 180Ω~160 kΩ See table Defective coolant temp sensor NO Replace Check Table Temperature (˚C ) 25 50 80 95 Resistance (kΩ) 30~37 9.3~10.7 3.2~3.8 1.0~1.3 0.7~0.8 Engine ECM SERVICE TOOL CAN Lo F 21 31 CAN Hi E 20 21 RS232 TX C 16 24 RS232 RX B 15 34 P DUMP A 12 CN-5 ENGINE COOLANT TEMPERATURE SENSOR CN-93 46 CAN_Hi 15 A 47 CAN_Lo 38 B CN-3 OEM connector C Engine harness connector CN-51 21096ES04 6-28 WHEN AIR CLEANER WARNING LAMP LIGHTS UP (engine is started) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Clogged air filter or Check filter or defective switch replace switch Does display go off when disconnect CD-10? Starting switch : ON Engine : Start Remedy YES Check resistance between CN-53 NO (23) and chassis Starting switch : OFF Disconnect CN-53 NO Short circuit in wiring harness between CD-10CN-53 (23) Repair or replace (After clean) Defective MCU Replace Check resistance YES MAX 1Ω NO MIN 1MΩ AIR CLEANER SWITCH MCU Pa 23 CD-10 CN-53 21096ES05 6-29 WHEN ENGINE OIL PRESSURE WARNING LAMP LIGHTS UP (engine is started) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause NO Defective circuit, sensor or ECM Remedy Contact Cummins NO Fault code 135 active? Starting switch : ON Fault code 386 active? Voltage above Refer to engine normal or shorted fault code 135 to high source YES Starting switch : ON Voltage above Refer to engine normal or shorted fault code 386 to high source YES Signal ENGINE OIL PRESSURE SENSOR CN-93 46 Engine ECM 47 SERVICE TOOL CAN_Lo F 21 31 CAN_Hi E 20 21 RS232_TX C 16 24 RS232_RX B 15 34 P_DUMP A 12 CN-5 CN-3 OEM connector Return 13 38 33 Engine harness connector +5V supply CN-51 21096ES06 6-30 WHEN HYDRAULIC OIL TEMPERATURE WARNING LAMP LIGHTS UP (engine is started) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Remedy High temperature Check hydraulic oil temperature (105˚C±2˚C), Defective temp sensor Replace Short circuit between temp sensor and MCU Repair or replace Resistance YES between CD-1 (1, 2) is in range of 164~151Ω? Does display go off when disconnect CD-1? Starting switch : ON Engine : Start Starting switch : ON Disconnect CD-1 NO YES Resistance between CN-51 NO (36, 5) is 0~1Ω? Starting switch : OFF Disconnect CN-51 Defective controller Replace NO Check Table Temperature (˚C ) Resistance (kΩ) ~ -30 ~ -10 22.22 8.16 ~31.78 ~10.74 ~0 ~ 40 5.18 ~ 6.6 ~ 70 ~ 80 ~ 90 ~ 100 1.06 0.39 0.322 0.243 0.185 0.164 ~1.28 ~0.476 ~0.298 ~0.219 ~0.167 0.151 MCU HYDRAULIC OIL TEMPERATURE SENDER 36 C CD-1 CN-51 21096ES07 6-31 105~ WHEN COOLANT TEMPERATURE GAUGE DOES NOT OPERATE (HCESPN 304, FMI or 4) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Remedy Check use HRDT Check or replace Check resistance YES between engine harness connector (15)-(38) Spec : 180Ω~160 kΩ Disconnection in Repair or replace wiring harness or (after clean) poor contact between temp sensor-engine harness connector NO Check resistance between temp sensor (A)-(B) Starting switch : OFF Spec : 180Ω~160 kΩ See table Defective coolant temp sensor NO Replace Check Table Temperature (˚C ) 25 50 80 95 Resistance (kΩ) 30~37 9.3~10.7 3.2~3.8 1.0~1.3 0.7~0.8 Engine ECM SERVICE TOOL CAN Lo F CAN Hi 21 31 E 20 21 RS232 TX C 16 24 RS232 RX B 15 34 P DUMP A 12 CN-5 ENGINE COOLANT TEMPERATURE SENSOR CN-93 46 CAN_Hi 15 A 47 CAN_Lo 38 B CN-3 OEM connector C Engine harness connector CN-51 21096ES04 6-32 WHEN FUEL GAUGE DOES NOT OPERATE OPERATE(HCESPN 301, FMI or 4) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES YES Check resistance between fuel sender (1) and (2) Remedy Defective MCU or Replace cluster Check resistance between CN-51 (5) and (38) Starting switch : OFF Disconnect CN-51 Spec : 50~600Ω NO Starting switch : OFF Spec : 50~600Ω See table NO Disconnection in wiring harness or poor contact between fuel sender-MCU Repair or replace Defective fuel sender Replace Check Table Range Resistance (Ω) Range Resistance (Ω) Full 50 5/12 400 11/12 100 4/12 450 10/12 150 3/12 500 9/12 200 2/12 550 8/12 250 1/12 600 7/12 300 Empty warning 700 6/12 350 - - MCU FUEL LEVEL SENDER 38 CD-2 CN-51 21096ES09 6-33 10 WHEN SAFETY SOLENOID DOES NOT OPERATE ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No.23 ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Hydraulic system malfunction YES Check operation of solenoid NO YES Check resistance YES between CN-4 (16) and chassis Starting switch : ON Voltage : 20~30V Safety state Check voltage between CN-68 NO (2) and chassis Check hydraulic system Defective solenoid Replace Safety lever : ON-OFF Check voltage between CN-68 (1) - (2) Remedy Starting switch : OFF Safety state Spec : 0Ω Disconnect CN-4 YES Check resistance between CS-4 NO (A)-(C) Starting switch : OFF Safety switch : ON-0Ω OFF-∞ Safety lever : OFF Starting switch : ON Voltage : 20~30V NO NO Disconnect in wiring harness or poor contact between CN-4-CN-68 Repair or replace (after clean) Disconnect in wiring harness or poor contact between CN-4-CS-4 Repair or replace (after clean) Defective safety switch Replace Disconnection in wiring harness between CN-68 (2)-fuse Repair or replace FUSE NO.23 SAFETY SWITCH C B A A 14 B 15 C 16 SAFETY SOLENOID CN-68 CS-4 CN-4 21096ES10 6-34 11 WHEN TRAVEL SPEED 1, DOES NOT OPERATE (HCESPN 167, FMI or 6) ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No.25 ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES Disconnection in Repair or replace wiring harness or poor contact between CN-70CN-52 or CN-181CN-52 Check resistance YES between CN-70 (1)-(2) or CN-181(1)-(2) Starting switch : OFF Spec : 30Ω Disconnect CN-70 YES Check fault code Remedy Defective solenoid Replace NO 167 active? YES Defective hydraulic Check hydraulic system system Starting switch : ON Check voltage between CN-70 NO (1)-(2) or CN-181(1)-(2) Check if travel speed lamps( , ) change when turning the RH multifunction switch on the cluster Starting switch : ON Spec : 20~30 V Disconnect CN-70 Disconnection in Repair or replace wiring harness or poor contact between CN-70fuse No 25 or CN181-fuse No.25 NO Starting switch : ON YES Defective cluster Replace Defective MCU Replace Check MCU Y NO R G Starting switch : ON NO TRAVEL HIGH SPEED SOLENOID FUSE NO.25 MCU CN-70 TRAVEL LOW SPEED SOLENOID CN-181 CN-52 14W96ES11 6-35 lights up condition) chassis Check voltage CN-3 (13) and chassis YES Starting switch : ON Spec : 20~30V Disconnection in NO wiring harness or Key switch : ON Spec : 20~30V BATT (+) BATT (+) BATT (-) BATT (-) Check voltage magnet coil and chassis Starting switch : START NO.9 Check operation of start relay NO CR-23 YES YES Check voltage between CN-2 (7) and chassis Starting switch : START Starting switch : ON NO Starting switch : START Spec : 20~30V Check operation of anti-restart NO relay CR-5 YES Check voltage between CR-5 NO (1, 2) 5 6 ECM POWER RY CR-35 NO.4 ⓐ NO.20 POWER RY CS-74 Disconnection in Repair or replace wiring harness or poor contact between CN-2 (7) -CR-5 (5) CN-95 NO Defective antirestart relay Replace Check voltage between CR-23 and chassis MASTER SW FUSIBLE LINK CN-60 CR-1 BATTERY ⓑ Starting switch : START Spec : 20~30V BATT RY DO-1 YES Defective start relay Replace DIODE NO Starting switch : START Spec : 20~30V Disconnection in Repair or replace wiring harness or poor contact between CN-2CR-5 CN-52 ANTI-RESTART RY YES Check voltage between CR-5 (2) and chassis Starting switch : START NO Spec : 20~30V 15 MCU CR-5 ⓑ 3 CIRCUIT BREAKER MANUAL RESET ⓐ Defective start relay Replace NO Starting switch : START Spec : 20~30V CR-45 Defective magnet Replace of start motor YES between starter 35 59 60 36 Replace Defective ECM power relay CR-45 YES CN-5 Repair or replace NO.1 Check operation start motor B ENGINE ECM poor contact between CN-3 (13) -CN-93 (39) NO 0, I ST C BR ACC 4 2 Defective ECM or Replace battery CN-94 CS-2 Check voltage YES CN-93 (39) and Remedy H H0 I YES 13 14 15 START KEY SW KEY IG 39 Cause CN-93 CN-3 ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No 1, 4, 9, 20 ·After checking, insert the disconnected connectors again immediately unless otherwise specified CN-125 12 WHEN ENGINE DOES NOT START ( Disconnection in Repair or replace wiring harness or poor contact between CN-52 (15)-CR-5 (1) ANTI-RESTART RY START MOTOR CN-2 CR-23 START RY Disconnection in Repair or replace wiring harness or poor contact between CS-2 (6)CR-5 (2) CN-45 17W96ES12 6-36 13 WHEN STARTING SWITCH ON DOES NOT OPERATE CN-93 CN-94 BATT (+) BATT (+) BATT (-) BATT (-) Cause YES Check voltage between DO-1 (1) and chassis Defective start switch NO YES Check voltage between CS-2 (1) and chassis YES Check voltage between CN-5 NO (36) and chassis Check voltage and specific gravity of battery YES Voltage : 20~30V Check voltage between CS-74 NO (1) and chassis Specific gravity : MIN 1.28 Voltage : MIN 24V Voltage : 20~30V NO NO.9 5 6 ECM POWER RY CR-35 NO.4 Replace NO.1 NO.20 POWER RY CS-74 CN-95 CIRCUIT BREAKER MANUAL RESET Disconnection in Charge or replace wiring harness or (after clean) poor contact between CS-74 (1) -CN-5 (36) MASTER SW FUSIBLE LINK CN-60 CR-1 ⓐ Battery capacity too low NO CR-45 Disconnection in Replace wiring harness or poor contact between CS-2 (1)CN-5 (36) Voltage : 20~30V 35 59 60 36 Disconnection in Repair or replace wiring harness or (after clean) poor contact between DO-1 (1)CR-1 or defective battery relay Disconnection in Repair or replace NO wiring harness or (after clean) poor contact between CS-2 (2)CN-5(60)- DO-1 (1) Voltage : 20~30V Starting switch : ON CN-5 Remedy Voltage : 20~30V YES Check voltage between CS-2 (2) and chassis CS-2 B ENGINE ECM YES ST C BR ACC 0, I 4 H H0 I 13 14 15 START KEY SW KEY IG CN-125 CN-3 39 ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted, master switch ON and check open circuit of fusible link (CN-60) ·After checking, insert the disconnected connectors again immediately unless otherwise specified BATTERY BATT RY DO-1 Charge or replace (after clean) DIODE CN-52 YES ⓐ Check voltage between CS-74 (2)- chassis Defective master switch Replace 15 MCU CR-5 NO Voltage : 20~30V ANTI-RESTART RY Disconnection in Charge or replace wiring harness or (after clean) poor contact between CS-74 (2) -CR-1 ANTI-RESTART RY START MOTOR CN-2 CR-23 START RY CN-45 17W96ES13 6-37 14 WHEN STARTING SWITCH IS TURNED ON, WIPER MOTOR DOES NOT OPERATE ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and the fuse No 6, 17 and 18 is not blown out ·After checking, insert the disconnected connectors again immediately unless otherwise specified CN-21 Cause NO Defective wiper cut switch Remedy Replace Front sliding door open-close YES NO Check voltage between CN-97 (7) and chassis Front sliding door-close Voltage : 4~5V Check operation YES of multifunction SW Starting switch : ON Turn wiper switch Check voltage between CN-5 (23) and chassis YES ⓐ NO Check voltage CN-98 (5) and chassis Sarting switch : ON Voltage : 0~1V Check operation of wiper motor and controller check voltage YES CN-141 (7) and chassis, CN-21 (4) and chassis Starting switch : OFF Voltage : 20~30V Check continuity NO between CN-141 (2)-CN-98 (3), CN-141 (9)-CN-97 (10), CN-141 (10)-CN-98 (5), CN-141 (5)-Chassis , Check wiper CN-141 (1)-CN-21 (5), motor resistance CN-141 (3)-CN-21 (6), YES between CN-21 CN-141 (4)-CN-21 (2), (2)-CN-21 (6) CN-141 (13)-CN-21 (3) Resistance : 3~4Ω NO Check voltage CN-141 (6) and YES chassis Starting switch : ON Voltage : 20~30V Defective multifunction switch YES YES 4 CN-5 M FUSE 18 NO.6 CN-141 Replace Replace FEED BACK MOTOR DRIVE SIG MOTOR DRIVE- MOTOR DRIVE+ GND VCC CONTINUE 24V WASHER P/P WASHER SIG INT SIG 10 WIPER CUT SW 11 N.C 12 FEED BACK 13 WIPER MOTOR CONTROLLER CN-17 FUSE 24 NO.18 CN-22 M 19 WASHER PUMP CN-98 43 (2) INT Replace (1) COM (4) HO WA CS-53 Repair or replace (after clean) Hi COM 23 WIPER CUT SW CN-97 1) Recheck fuse Replace No.18 2) Disconnection Repair or replace CN-141(6)-Fuse (after clean) 37 10 7 10 11 12 WI Lo COM Lo Hi 12 B+ L 10 COM ⓑ 11 Disconnection in Repair or replace wiring harness or (after clean) poor contact NO WIPER MOTOR 1)Recheck fuse Replace No.17 2)Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-97(7)-Fuse Defective multifunction switch 1) Recheck fuse No.6 2) Disconnection in wiring harness or poor contact between CN-141(7)-Fuse, CN-21(4)-Fuse Check voltage CN-97 (10) and chassis Washing ⓑ Starting switch : ON Vottage : 20~30V NO NO Intermittent ⓐ Repair or replace Short circuit in wiring harness or (after clean) poor contact between CN-141 (11)- CS-53 Check valtage between CN-141 YES (11) and chassis 5 NO Check operation wiper cut switch Defective wiper motor Replace Defective wiper motor controller Replace R MULTIFUNCTION SWITCH-LH FUSE NO.17 14W96ES14 6-38 15 WHEN STARTING SWITCH IS TURNED ON, HEAD LAMP DOES NOT LIGHTS UP ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No.17 ·After checking, insert the disconnected connectors again immediately unless otherwise specified FUSE CN-151 NO.17 Cause YES Check voltage YES between CL-4(2) and chassis,CL3(2) and chassis Voltage : 20~30V NO YES Check voltage between CN-98 NO (2) and chassis Starting switch : ON NO Head lamp switch : ON Voltage : 20~30V Check voltage between CN-152 (14) and chassis, CN-152 (15) and chassis INT (2) COM (1) Replace HO (4) CN-97 Check voltage YES between CN-151 (8) and chassis Starting switch : ON Head lamp switch : ON Voltage : 20~30V Defective bulb Remedy Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-151 (8)-CL-4 (1) or CN-151(8)-CL-3(2) WA Hi Disconnection in wiring harness or poor contact between CN-98 (2)-CN-151 (9) YES Lo Replace Lo Repair or replace (after clean) Hi B+ 12 L 9 10 11 12 CN-98 COM 10 R Check voltage between CN-5 NO (49) and chassis Disconnection in wiring harness or poor contact between CN-152 (14) and chassis or CN-152 (15)chassis Recheck fuse No 17 Replace Defective switch panel Replace CABIN LAMP RY WORK LAMP RY(COIL) WORK LAMP RY WORK LAMP RY RELAY EARTH HEAD LMP RY HI HEAD LMP RY HI(COIL) HEAD LMP RY LO NC OUTRINGER RY HARNESS RY 10 11 12 13 14 15 FUEL HEAT RY(COIL) FUEL HEAT RY HEAD LMP RY LO(COIL) HEAD LMP RY(COIL) REAR LH RY REAR RH RY FRONT LH RY FUEL HEAT RY FRONT RH RY REAR LH RY(COIL) REAR RH RY(COIL) FRONT LH RY(COIL) FRONT RH RY(COIL) HEAD LMP RY HEAD LMP POWER RY HARNESS RY 11 MULTIFUNCTION SW-LH Repair or replace (after clean) CABIN LAMP RY CN-152 WI CN-5 ILL HEAD LAMP WORK LAMP CABIN LAMP PRE-HEAT Front/ Left Front/ Right Rear/ Left Rear/ Right POWER GND DOZER PS 10 11 12 CL-4 Lo Hi CN-116 Starting switch : ON Voltage : 20~30V Head lamp switch : ON CABIN LAMP RY(COIL) 12 COM COM Defective multifunction switch 7 10 11 12 49 E HEAD LAMP-RH CL-3 Lo Hi E HEAD LAMP-LH SWITCH PANEL Starting switch : ON Voltage : 20~30V Head lamp switch : ON YES Check voltage between CN-116 NO (2) and chassis Starting switch : ON Head lamp switch : ON-OFF NO 14W96ES15 Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-5(49) and CN-116(2) 6-39 16 WHEN STARTING SWITCH IS TURNED ON, WORK LAMP DOES NOT LIGHTS UP ·Before disconnecting the connector, always turn the starting switch OFF ·Before carrying out below procedure, check all the related connectors are properly inserted and short of fuse No.15 ·After checking, insert the disconnected connectors again immediately unless otherwise specified Cause YES YES Defective bulb Remedy Replace Check voltage between CL-5 (2) and chassis FUSE NO.15 NO YES Check voltage between CN-151 (5) and chassis Starting switch : ON Work lamp switch : ON Voltage : 20~30V Check voltage between CN-151 (6) and chassis, CN-151(4) chassis YES Check voltage between CN-116 NO (3) and chassis Starting switch : ON Work lamp switch : ON NO Voltage : 20~30V Starting switch : ON Voltage : 20~30V NO Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-151 (5)-CL-5 (2) Defective switch panel CN-5 CN-151 CN-116 Replace Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-151 (5)-CN-116 (3) ILL HEAD LAMP WORK LAMP CABIN LAMP PRE-HEAT Front/ Left Front/ Right Rear/ Left 50 CABIN LAMP RY(COIL) CABIN LAMP RY CABIN LAMP RY WORK LAMP RY(COIL) WORK LAMP RY WORK LAMP RY RELAY EARTH HEAD LMP RY HI HEAD LMP RY HI(COIL) HEAD LMP RY LO NC OUTRINGER RY HARNESS RY CN-12 CL-5 POWER 10 GND 11 DOZER PS 12 Rear/ Right WORK LAMP SWITCH PANEL Disconnection in Repair or replace wiring harness or (after clean) poor contact between CN-151 (6) and chassis or CN-151 (4) and chassis Recheck fuse No.15 10 11 12 CL-6 Replace 14W96ES16 6-40 ... CN-141 (2)-CN-98 (3), CN-141 (9)-CN-97 (10), CN-141 (10)-CN-98 (5), CN-141 (5)-Chassis , Check wiper CN-141 (1)-CN-21 (5), motor resistance CN-141 (3)-CN-21 (6), YES between CN-21 CN-141 (4)-CN-21... contact between CS-2 (6)CR-5 (2) CN-45 17W96ES12 6-3 6 13 WHEN STARTING SWITCH ON DOES NOT OPERATE CN-93 CN-94 BATT (+) BATT (+) BATT (-) BATT (-) Cause YES Check voltage between DO-1 (1) and chassis... harness or poor contact between CN-70CN-52 or CN-181CN-52 Check resistance YES between CN-70 (1 )-( 2) or CN-181(1 )-( 2) Starting switch : OFF Spec : 30Ω Disconnect CN-70 YES Check fault code Remedy