BAIC Car Troubleshooting Manual - Electrical System Guide (EN)

GROUP 6 TROUBLESHOOTING GROUP 6 TROUBLESHOOTING 1. 1. WHEN STARTING SWITCH IS TURNED ON, CLUSTER WHEN STARTING SWITCH IS TURNED ON, CLUSTER AND MONITOR AND MONITOR LAMP DOES NOT LAMP DOES NOT LIGHT UP LIGHT UP · Before carrying out below procedure, check all the related connectors are properly inserted and the fuse [CN-36] No.12 is not blown out and ON/OFF of bulb. · After checking, connect the disconnected connectors again immediately unless otherwise specified.

MONITOR CN-57 CN-15 CLUSTER FUSE[CN-36] 1 CN-56 No.12 Check voltage 7809SU7EL24 7-77 YES Check voltage between CN-56 (1), CN-57(1) and chassis NO Remedy Cause Remedy Defective cluster Defective monitor Disconnection in wiring harness or poor contact between CN-56 (1), CN-57 (1) and fuse No. 12 Replace Replace Repair or replace (after clean) 1 1 YES 20 ~ 30 V NO 0 V

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2. WHEN BATTERY LAMP LIGHTS UP WHEN BATTERY LAMP LIGHTS UP (engine is started) · Before carrying out below procedure, check all the related connectors are properly inserted. · After checking, connect the disconnected connectors again immediately unless otherwise specified. CONTROLLER(MCU) ALTERNATOR " 2 " TERMINAL CN-58A Check valtage 7809SU7EL30 7-78 YES Check voltage YES between CN-58A (B36) and chassis NO Voltage : 27.5~30V Check voltage YES between CN-6 (49) and chassis YES Voltage : 26~30V Check voltage Check voltage between CN-13 NO between (8) and chassis alternator terminal "2" and NO chassis Voltage : 26~30V Starting switch :

ON NO Remedy Cause Defective controller Disconnection in wiring harness or poor contact between CN-58A (B36) and CN-6 (49) Disconnection in wiring harness or poor contact between CN-13 (8) and CN-6 (49) Disconnection in wiring harness or poor contact between CN-13 (8) and alternator terminal " 2 " Defective alternator Replace Repair or replace (after clean) Repair or replace (after clean) Repair or replace (after clean) Replace B36 49 8 CN-6 CN-13 YES 20 ~ 30 V NO 0 V

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3. WHEN PARKING SOLENOID DOES NOT WORK 3. WHEN PARKING SOLENOID DOES NOT WORK · Before carrying out below procedure, check all the related connectors are properly inserted and the fuse [CN-36] No.29 is not blown out. · After checking, connect the disconnected connectors again immediately unless otherwise specified. PARKING SWITCH 8 CN-9 FUSE [CN-36] 7 4 No.29 4 CN-8 CN-5 CS-17 5 30 CN-71 7809SU7EL31 7-79 YES Check voltage YES between CS-17 Check voltage (4) and chassis YES between CN-8 NO (5) and chassis Voltage : 20~30V Check voltage between CN-71 Voltage : 20~30V (2) and chassis Starting switch : ON Parking switch : ON-OFF YES Voltage :

20~30V Check voltage between CN-5 NO (30) and chassis Voltage : 20~30V NO YES Check voltage between CS-17 NO (7) and chassis NO Voltage : 20~30V Remedy Cause Defective parking brake solenoid Disconnection in wiring harness or poor contact between CS-17 (4) and CN-8 (5) Disconnection in wiring harness or poor contact between CN-5 (30) and CN-8 (5) Disconnection in wiring harness or poor contact between CN-5 (30) and CN-71 (2) Difective parking switch Disconnection in wiring harness or poor contact between CS-17 (7) and Fuse No.29 Replace Repair or replace (after clean) Repair or replace (after clean) Repair or replace (after clean) Replace Repair or replace (after clean) 2 1

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4. TRANSMISSION IS NOT RETURNED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED 4. TRANSMISSION IS NOT RETURNED TO NEUTRAL WHEN PARKING BRAKE IS APPLIED · Before carrying out below procedure, check all the related connectors are properly inserted and the fuse [CN-36] No.29 is not blown out. · After checking, connect the disconnected connectors again immediately unless otherwise specified. PARKING SWITCH 8 CN-9 FUSE [CN-36] 3 7 No.29 4 CS-17 CN-8 T/M CONTROL UNIT CN-157 Check resistance 7809SU7EL32 7-80 YES Check voltage YES between CN-157 (21) and chassis Check voltage Starting switch : ON Parking switch : ON between CS-17 Voltage : 20~30V NO (3) and chassis YES Voltage : 20~30V Parking switch :

ON Check voltage between CS-17 NO (7) and chassis NO Voltage : 20~30V Remedy Cause Remedy Defective T/M control unit Disconnection in wiring harness or poor contact between CN-157 (21) and CS-17(3) Defective switch Disconnection in wiring harness or poor contact between CS-17 (7) and fuse No.29 Replace Repair or replace (after clean) Replace Repair or replace (after clean) 1 21 YES MAX 1Ω NO MIN 1MΩ

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