Module Communications Network
- Description and operation
- Diagnosis and Testing
- Principles of Operation
- Inspection and Verification
- Visual Inspection Chart
- Driver Information Chart
- Default mode Definitions
- Diagnostic Trouble Code (DTC) index
- Notes
- Power Supply/Ground test index
- Pinpoint Tests
- PINPOINT TEST G270316p1: BPM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p2: SLCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p3: PDCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p4: DDCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p5: PHRCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p6: PSCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p7: DSCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p8: DHRCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p9: IC POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p10: RCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p12: ADCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p13: KTM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p14: ASCCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p15: ASCBCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p16: A/CCM POWER SUPPLY OR GROUND FAULT
- G270316t44: CHECK THE PERMANENT SUPPLY TO THE A/CCM
- G270316t45: CHECK THE ISOLATE RELAY SWITCHED SUPPLY TO THE A/CCM
- G270316t28: CHECK THE COMPRESSOR CLUTCH RELAY SWITCHED SUPPLY TO THE A/CCM
- G270316t46: CHECK THE IGNITION SWITCHED SUPPLY TO THE A/CCM
- G270316t47: CHECK THE IGNITION SWITCHED GROUND TO THE A/CCM
- G270316t48: CHECK THE GROUND TO THE A/CCM
- PINPOINT TEST G270316p18: ECM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p19: TCM POWER SUPPLY OR GROUND FAULT, VEHICLES WITH SUPERCHARGER
- PINPOINT TEST G270316p11: TCM POWER SUPPLY OR GROUND FAULT, VEHICLES WITHOUT SUPERCHARGER
- PINPOINT TEST G270316p20: ABS/TCCM POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p21: GSI MODULE POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p23: DLC POWER SUPPLY OR GROUND FAULT
- PINPOINT TEST G270316p22: CHECK THE CONTROLLER AREA NETWORK INTEGRITY, VEHICLES WITH SUPERCHARGER
- G270316t68: CHECK THE CAN NETWORK FOR CONTINUITY
- G270316t74: CHECK THE ASCBCM CAN + CIRCUIT FOR CONTINUITY
- G270316t75: CHECK THE ASCBCM CAN - CIRCUIT FOR CONTINUITY
- G270316t76: CHECK THE TCM CAN + CIRCUIT FOR CONTINUITY
- G270316t77: CHECK THE TCM CAN - CIRCUIT FOR CONTINUITY
- G270316t136: CHECK THE CAN NETWORK FOR SHORT CIRCUIT
- G270316t137: CHECK THE CAN NETWORK FOR OPEN CIRCUIT
- G270316t78: CHECK THE CAN + CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
- G270316t79: CHECK THE CAN - CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
- G270316t80: CHECK THE CAN + CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
- G270316t81: CHECK THE CAN - CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
- G270316t82: CHECK THE CAN + CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
- G270316t83: CHECK THE CAN - CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
- G270316t84: CHECK THE CAN + CIRCUIT BETWEEN THE ECM AND THE ASCCM FOR CONTINUITY
- G270316t85: CHECK THE CAN - CIRCUIT BETWEEN THE ECM AND THE ASCCM FOR CONTINUITY
- G270316t86: CHECK THE CAN + CIRCUIT BETWEEN THE ASCCM AND THE ABS/TCCM FOR CONTINUITY
- G270316t87: CHECK THE CAN - CIRCUIT BETWEEN THE ASCCM AND THE ABS/TCCM FOR CONTINUITY
- G270316t138: CHECK THE CAN + AND - CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR SHORT CIRCUIT TO EACH OTHER
- G270316t139: CHECK THE CAN + AND - CIRCUITS BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR SHORT CIRCUIT TO EACH OTHER
- G270316t140: CHECK THE CAN + AND - CIRCUITS BETWEEN THE GSI MODULE AND THE ECM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t141: CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE ASCCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t143: CHECK THE CAN + AND - CIRCUITS BETWEEN THE ASCCM AND THE ABS/TCCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t142: CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE TCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t144: CHECK THE CAN + AND - CIRCUITS BETWEEN THE GSI MODULE AND THE ASCBCM FOR SHORT CIRCUIT TO EACH OTHER
- PINPOINT TEST G270316p25: CHECK THE CONTROLLER AREA NETWORK INTEGRITY, VEHICLES WITHOUT SUPERCHARGER
- G270316t98: CHECK THE CAN NETWORK FOR CONTINUITY
- G270316t99: CHECK THE ASCBCM CAN + CIRCUIT FOR CONTINUITY
- G270316t100: CHECK THE ASCBCM CAN - CIRCUIT FOR CONTINUITY
- G270316t145: CHECK THE CAN NETWORK FOR SHORT CIRCUIT
- G270316t146: CHECK THE CAN NETWORK FOR OPEN CIRCUIT
- G270316t103: CHECK THE CAN + CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
- G270316t104: CHECK THE CAN - CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
- G270316t105: CHECK THE CAN + CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
- G270316t106: CHECK THE CAN - CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
- G270316t107: CHECK THE CAN + CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
- G270316t108: CHECK THE CAN - CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
- G270316t109: CHECK THE CAN + CIRCUIT BETWEEN THE ECM AND THE TCM FOR CONTINUITY
- G270316t110: CHECK THE CAN - CIRCUIT BETWEEN THE ECM AND THE TCM FOR CONTINUITY
- G270316t111: CHECK THE CAN + CIRCUIT BETWEEN THE TCM AND THE ASCCM FOR CONTINUITY
- G270316t112: CHECK THE CAN - CIRCUIT BETWEEN THE TCM AND THE ASCCM FOR CONTINUITY
- G270316t101: CHECK THE CAN + CIRCUIT BETWEEN THE ASCCM AND THE ABS/TCCM FOR CONTINUITY
- G270316t102: CHECK THE CAN - CIRCUIT BETWEEN THE ASCCM AND THE ABS/TCCM FOR CONTINUITY
- G270316t147: CHECK THE CAN + AND - CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR SHORT CIRCUIT TO EACH OTHER
- G270316t148: CHECK THE CAN + AND - CIRCUITS BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR SHORT CIRCUIT TO EACH OTHER
- G270316t150: CHECK THE CAN + AND - CIRCUITS BETWEEN THE GSI MODULE AND THE ASCBCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t149: CHECK THE CAN + AND - CIRCUITS BETWEEN THE GSI MODULE AND THE ECM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t151: CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE TCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t152: CHECK THE CAN + AND - CIRCUITS BETWEEN THE TCM AND THE ASCCM FOR SHORT CIRCUIT TO EACH OTHER
- G270316t153: CHECK THE CAN + AND - CIRCUITS BETWEEN THE ASCCM AND THE ABS/TCM FOR SHORT CIRCUIT TO EACH OTHER
- PINPOINT TEST G270316p24: CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT
- G270316t88: CHECK THE CAN + FOR SHORT CIRCUIT TO BATTERY
- G270316t89: CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t90: CHECK THE CAN + FOR SHORT CIRCUIT TO GROUND
- G270316t91: CHECK THE CAN + FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t92: CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- G270316t93: CHECK THE CAN - FOR SHORT CIRCUIT TO BATTERY
- G270316t94: CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t95: CHECK THE CAN - FOR SHORT CIRCUIT TO GROUND
- G270316t96: CHECK THE CAN - FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t97: CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- PINPOINT TEST G270316p26: CHECK THE SCP NETWORK CIRCUIT
- G270316t113: CHECK FOR CORRECT BUS TERMINATION IN THE SCP + NETWORK
- G270316t50: CHECK THE SCP NETWORK + AND - FOR SHORT CIRCUIT TO EACH OTHER
- G270316t114: CHECK THE SCP + FOR SHORT CIRCUIT TO BATTERY
- G270316t115: CHECK THE SCP + FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t116: CHECK THE SCP + FOR SHORT CIRCUIT TO GROUND
- G270316t117: CHECK THE SCP + FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t118: CHECK THE SCP + FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- G270316t119: CHECK THE SCP - FOR SHORT CIRCUIT TO BATTERY
- G270316t120: CHECK THE SCP - FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t121: CHECK THE SCP - FOR SHORT CIRCUIT TO GROUND
- G270316t122: CHECK THE SCP - FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t123: CHECK THE SCP - FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- PINPOINT TEST G270316p27: CHECK THE ISO DATA CIRCUIT
- G270316t124: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO BATTERY
- G270316t125: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t126: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO GROUND
- G270316t127: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t128: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- G270316t129: CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO BATTERY
- G270316t130: CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO IGNITION POSITIVE
- G270316t131: CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO GROUND
- G270316t132: CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
- G270316t133: CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
- Removal and Installation