Module Communications Network

• Description and Operation
  • Fuse Boxes and Relays (LH Steering)
  • Wiring Harnesses
  • Location of J1962 socket
  • Fuse Box Details
    • Engine Compartment Fuse Box
    • Engine Management Fuse Box
    • Heelboard Fuse Box - Right hand side
    • Heelboard Fuse Box - Left hand side
    • Trunk Fuse Box
  • Relay Details
    • Engine Compartment Fuse Box Relays
    • Engine Management Fuse Box Relay
    • Engine Compartment - Front Relays
    • Engine and Transmission Control Module Compartment Relays
    • Front Firewall Relays
    • Heelboard Fuse Box Relays - Right hand side
    • Heelboard Fuse Box Relays - Left hand side
    • Trunk Fuse Box Relays
• Diagnosis and Testing
  • Principles of Operation
  • Inspection and Verification
  • Driver Information Chart
    • Notes
    • Default mode Definitions
  • Diagnostic Trouble Code (DTC) index
  • Power Supply/Ground test index
  • Pinpoint tests
    • PINPOINT TEST G289876p1 : BPM POWER SUPPLY OR GROUND FAULT
      • G289876t1 : CHECK THE PERMANENT SUPPLY (1) TO THE BPM
      • G289876t2 : CHECK THE PERMANENT SUPPLY (2) TO THE BPM
      • G289876t3 : CHECK THE IGNITION SWITCHED GROUND (1) TO THE BPM
      • G289876t4 : CHECK THE IGNITION SWITCHED GROUND (2) TO THE BPM
      • G289876t5 : CHECK THE ACCESSORY SWITCHED GROUND TO THE BPM
    • PINPOINT TEST G289876p2 : SLCM POWER SUPPLY OR GROUND FAULT
      • G289876t6 : CHECK THE PERMANENT SUPPLY TO THE SLCM
      • G289876t7 : CHECK THE LOGIC GROUNDS TO THE SLCM
    • PINPOINT TEST G289876p3 : PDCM POWER SUPPLY OR GROUND FAULT
      • G289876t8 : CHECK THE PERMANENT SUPPLY TO THE PDCM
      • G289876t9 : CHECK THE GROUND TO THE PDCM
    • PINPOINT TEST G289876p4 : DDCM POWER SUPPLY OR GROUND FAULT
      • G289876t10 : CHECK THE PERMANENT SUPPLY TO THE DDCM
      • G289876t11 : CHECK THE POWER GROUND TO THE DDCM
    • PINPOINT TEST G289876p5 : PSCM POWER SUPPLY OR GROUND FAULT
      • G289876t12 : CHECK THE IGNITION SWITCHED SUPPLY TO THE PSCM
      • G289876t13 : CHECK THE GROUND TO THE PSCM
    • PINPOINT TEST G289876p6 : ABS/TCCM POWER SUPPLY OR GROUND FAULT
      • G289876t14: CHECK THE PERMANENT SUPPLY (1) TO THE ABS/TCCM
      • G289876t15: CHECK THE PERMANENT SUPPLY (2) TO THE ABS/TCCM
      • G289876t16 : CHECK THE GROUNDS TO THE DSCM
    • PINPOINT TEST G289876p7 : IC POWER SUPPLY OR GROUND FAULT; PINPOINT TEST
      • G289876t17 : CHECK THE PERMANENT SUPPLY TO THE IC
      • G289876t18 : CHECK THE IGNITION SWITCHED SUPPLY TO THE IC
      • G289876t19 : CHECK THE LOGIC GROUND TO THE IC
      • G289876t20 : CHECK THE POWER GROUND TO THE IC
    • PINPOINT TEST G289876p8 : RCM POWER SUPPLY OR GROUND FAULT
      • G289876t21 : CHECK THE IGNITION SWITCHED SUPPLY TO THE RCM
      • G289876t22 : CHECK THE LOGIC GROUND TO THE RCM
    • PINPOINT TEST G289876p9 : ADCM POWER SUPPLY OR GROUND FAULT
      • G289876t23 : CHECK THE PERMANENT SUPPLY TO THE ADCM
      • G289876t24 : CHECK THE IGNITION SUPPLY TO THE ADCM
      • G289876t25 : CHECK THE GROUND TO THE ADCM
    • PINPOINT TEST G289876p10 : KTM POWER SUPPLY OR GROUND FAULT
      • G289876t26 : CHECK THE PERMANENT SUPPLY TO THE KTM
      • G289876t27 : CHECK THE LOGIC GROUND TO THE KTM
      • G289876t28 : CHECK THE IGNITION SWITCHED GROUND TO THE KTM
      • G289876t29 : CHECK THE ACCESSORY SWITCHED GROUND TO THE KTM
    • PINPOINT TEST G289876p11 : A/CCM POWER SUPPLY OR GROUND FAULT
      • G289876t30 : CHECK THE PERMANENT SUPPLY TO THE A/CCM
      • G289876t31 : CHECK THE ISOLATE RELAY SWITCHED SUPPLY TO THE A/CCM
      • G289876t32 : CHECK THE IGNITION SWITCHED SUPPLY TO THE A/CCM
      • G289876t33 : CHECK THE ACCESSORY SWITCHED GROUND TO THE A/CCM
      • G289876t34 : CHECK THE GROUND TO THE A/CCM
    • PINPOINT TEST G289876p12 : ECM POWER SUPPLY OR GROUND FAULT
      • G289876t35 : CHECK THE PERMANENT SUPPLY TO THE ECM
      • G289876t36 : CHECK THE IGNITION SWITCHED SUPPLY TO THE ECM
      • G289876t37 : CHECK THE EMS SWITCHED SUPPLY (1) TO THE ECM
      • G289876t38 : CHECK THE EMS SWITCHED SUPPLY (2) TO THE ECM
      • G289876t39 : CHECK THE GROUND TO THE ECM
    • PINPOINT TEST G289876p13 : TCM POWER SUPPLY OR GROUND FAULT
      • G289876t40 : CHECK THE PERMANENT SUPPLY TO THE TCM (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t41 : CHECK THE IGNITION SUPPLY TO THE TCM
      • G289876t42 : CHECK THE GROUND TO THE TCM
    • PINPOINT TEST G289876p14 : GSI MODULE POWER SUPPLY OR GROUND FAULT
      • G289876t43 : CHECK THE IGNITION SUPPLY TO THE GSI MODULE
      • G289876t44 : CHECK THE GROUND TO THE GSI MODULE
    • PINPOINT TEST G289876p15 : DLC POWER SUPPLY OR GROUND FAULT
      • G289876t45 : CHECK THE PERMANENT SUPPLY TO THE DLC
      • G289876t46 : CHECK THE IGNITION SUPPLY TO THE DLC
      • G289876t47 : CHECK THE IGNITION SWITCHED GROUND TO THE DLC
      • G289876t48 : CHECK THE ACCESSORY SWITCHED GROUND TO THE DLC
      • G289876t49 : CHECK THE LOGIC GROUND TO THE DLC
    • PINPOINT TEST G289876p16 : CHECK THE CONTROLLER AREA NETWORK INTEGRITY
      • G289876t50 : CHECK THE CAN NETWORK FOR CONTINUITY
      • G289876t51 : CHECK THE CAN + CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
      • G289876t52 : CHECK THE CAN - CIRCUIT BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR CONTINUITY
      • G289876t53 : CHECK THE CAN + CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
      • G289876t54 : CHECK THE CAN - CIRCUIT BETWEEN THE INSTRUMENT CLUSTER AND THE GSI MODULE FOR CONTINUITY
      • G289876t55 : CHECK THE CAN + CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
      • G289876t56 : CHECK THE CAN - CIRCUIT BETWEEN THE GSI MODULE AND THE ECM FOR CONTINUITY
      • G289876t57 : CHECK THE CAN + CIRCUIT BETWEEN THE ECM AND THE TCM FOR CONTINUITY (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t58 : CHECK THE CAN - CIRCUIT BETWEEN THE ECM AND THE TCM FOR CONTINUITY (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t59 : CHECK THE CAN + CIRCUIT BETWEEN THE TCM AND THE ABS/TCCM FOR CONTINUITY (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t60 : CHECK THE CAN - CIRCUIT BETWEEN THE TCM AND THE ABS/TCCM FOR CONTINUITY (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t61 : CHECK THE CAN + CIRCUIT BETWEEN THE ECM AND THE ABS/TCCM (VEHICLES WITH SUPERCHARGER ONLY)
      • G289876t62 : CHECK THE CAN - CIRCUIT BETWEEN THE ECM AND THE ABS/TCCM (VEHICLES WITH SUPERCHARGER ONLY)
      • G289876t63 : CHECK THE CAN + CIRCUIT BETWEEN THE ECM AND THE TCM (VEHICLES WITH SUPERCHARGER ONLY)
      • G289876t64 : CHECK THE CAN - CIRCUIT BETWEEN THE ECM AND THE TCM (VEHICLES WITH SUPERCHARGER ONLY)
      • G289876t65 : CHECK THE CAN + CIRCUIT BETWEEN THE GSI MODULE AND THE VSIM
      • G289876t66 : CHECK THE CAN - CIRCUIT BETWEEN THE GSI MODULE AND THE VSIM
      • G289876t67 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE DLC AND THE IC FOR SHORT CIRCUIT TO EACH OTHER
      • G289876t68 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE IC AND THE GSI MODULE FOR SHORT CIRCUIT TO EACH OTHER
      • G289876t69 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE GSI MODULE AND THE ECM FOR SHORT CIRCUIT TO EACH OTHER
      • G289876t70 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE TCM FOR SHORT CIRCUIT TO EACH OTHER (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t71 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE TCM AND THE ABS/TCCM FOR SHORT CIRCUIT TO EACH OTHER (VEHICLES WITHOUT SUPERCHARGER ONLY)
      • G289876t72 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE ABS/TCCM FOR SHORT CIRCUIT TO EACH OTHER (VEHICLES WITH SUPERCHARGER ONLY)
      • G289876t73 : CHECK THE CAN + AND - CIRCUITS BETWEEN THE ECM AND THE TCM FOR SHORT CIRCUIT TO EACH OTHER (VEHICLES WITH SUPERCHARGER ONLY)
    • PINPOINT TEST G289876p17 : CHECK THE CONTROLLER AREA NETWORK FOR SHORT CIRCUIT
      • G289876t75 : CHECK THE CAN + FOR SHORT CIRCUIT TO BATTERY
      • G289876t76 : CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t77 : CHECK THE CAN + FOR SHORT CIRCUIT TO GROUND
      • G289876t78 : CHECK THE CAN + FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t79 : CHECK THE CAN + FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
      • G289876t80 : CHECK THE CAN - FOR SHORT CIRCUIT TO BATTERY
      • G289876t81 : CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t82 : CHECK THE CAN - FOR SHORT CIRCUIT TO GROUND
      • G289876t83 : CHECK THE CAN - FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t84 : CHECK THE CAN - FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
    • PINPOINT TEST G289876p18 : CHECK THE SCP NETWORK CIRCUIT
      • G289876t85 : CHECK FOR CORRECT BUS TERMINATION IN THE SCP + NETWORK
      • G289876t86 : CHECK THE SCP NETWORK + AND - FOR SHORT CIRCUIT TO EACH OTHER
      • G289876t87 : CHECK THE SCP + FOR SHORT CIRCUIT TO BATTERY
      • G289876t88 : CHECK THE SCP + FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t89 : CHECK THE SCP + FOR SHORT CIRCUIT TO GROUND
      • G289876t90 : CHECK THE SCP + FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t91 : CHECK THE SCP + FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
      • G289876t92 : CHECK THE SCP - FOR SHORT CIRCUIT TO BATTERY
      • G289876t93 : CHECK THE SCP - FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t94 : CHECK THE SCP - FOR SHORT CIRCUIT TO GROUND
      • G289876t95 : CHECK THE SCP - FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t96 : CHECK THE SCP - FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
    • PINPOINT TEST G289876p19 : CHECK THE ISO DATA CIRCUIT
      • G289876t97 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO BATTERY
      • G289876t98 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t99 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO GROUND
      • G289876t100 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t101 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
      • G289876t102 : CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO BATTERY
      • G289876t103 : CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO IGNITION POSITIVE
      • G289876t104 : CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO GROUND
      • G289876t105 : CHECK THE SERIAL INPUT CIRCUIT FOR SHORT CIRCUIT TO ACCESSORY SWITCHED GROUND
      • G289876t106 : CHECK THE BIDIRECTIONAL CIRCUIT FOR SHORT CIRCUIT TO IGNITION SWITCHED GROUND
    • PINPOINT TEST G289876p20 : ECM FLASH PROGRAMMING CIRCUIT MALFUNCTION
      • G289876t107 : CHECK THE ECM FCCP CIRCUIT FOR SHORT CIRCUIT TO GROUND
      • G289876t108 : CHECK THE ECM FCCP CIRCUIT FOR SHORT CIRCUIT TO BATTERY
    • PINPOINT TEST G289876p21 : DSCM POWER SUPPLY OR GROUND FAULT
      • G289876t109 : CHECK THE PERMANENT SUPPLY TO THE DSCM
      • G289876t110 : CHECK THE LOGIC GROUND TO THE DSCM
      • G289876t111 : CHECK THE GROUND TO THE DSCM
    • PINPOINT TEST G289876p22 : DRDCM POWER SUPPLY OR GROUND FAULT
      • G289876t112 : CHECK THE PERMANENT SUPPLY TO THE DRDCM
      • G289876t113 : CHECK THE LOGIC GROUNDS TO THE DRDCM
    • PINPOINT TEST G289876p23 : PRDCM POWER SUPPLY OR GROUND FAULT
      • G289876t114 : CHECK THE PERMANENT SUPPLY TO THE PRDCM
      • G289876t115 : CHECK THE LOGIC GROUND TO THE PRDCM
      • G289876t116 : CHECK THE POWER GROUND TO THE PRDCM
• Removal and Installation
  • Battery Junction Box (BJB)
    • Removal
    • Installation
  • Central Junction Box (CJB)
    • Removal
    • Installation
  • Front Auxiliary Junction Box
    • Removal
    • Installation
  • Rear Auxiliary Junction Box
    • Removal
    • Installation