| 1 | Fuel injector No. 1 drive circuit | 31 | Mixture control oxygen sensor heater ground circuit |
| 2 | Fuel injector No. 2 drive circuit | 32 | Mixture control oxygen sensor heater drive circuit |
| 3 | CAN (low) communication circuit to transmission control module (TCM) | 33 | Mixture control oxygen sensor signal circuit (UN) |
| 4 | EGR valve drive circuit 1 | 34 | Mixture control oxygen sensor signal circuit (VM) |
| 5 | Ignition coil No. 2 drive circuit | 35 | Mixture control oxygen sensor signal circuit (IP) |
| 6 | Ignition coil No. 1 drive circuit | 36 | Mixture control oxygen sensor signal circuit (IA) |
| 7 | — | 37 | — |
| 8 | — | 38 | Manifold absolute pressure (MAP) sensor signal circuit |
| 9 | — | 39 | Throttle position (TP) sensor (sub) signal circuit |
| 10 | — | 40 | TP sensor (main) signal circuit |
| 11 | — | 41 | Catalytic converter control oxygen sensor signal circuit |
| 12 | Mass air flow (MAF) meter signal circuit | 42 | MAP sensor power supply circuit |
| 13 | CAN (low) communication circuit to transmission control module (TCM) | 43 | TP sensor power supply circuit |
| 14 | CAN (high) communication circuit to TCM | 44 | Throttle motor drive circuit (close) |
| 15 | Engine control module (ECM) ground circuit 1 | 45 | Throttle motor drive circuit (open) |
| 16 | Fuel injector No. 3 drive circuit | 46 | — |
| 17 | Fuel injector No. 4 drive circuit (K12B model only) | 47 | Catalytic converter control oxygen sensor heater drive circuit |
| 18 | EGR valve drive circuit 4 | 48 | Fuel tank evaporation solenoid valve drive circuit |
| 19 | EGR valve drive circuit 3 | 49 | — |
| 20 | Ignition coil No. 4 drive circuit (K12B model only) | 50 | — |
| 21 | Ignition coil No. 3 drive circuit | 51 | Mixture control oxygen sensor shield ground circuit |
| 22 | Camshaft (CMP) sensor signal circuit | 52 | Catalytic converter control oxygen sensor shield ground circuit |
| 23 | Crankshaft (CKP) sensor signal circuit | 53 | Knock sensor shield ground circuit |
| 24 | Engine coolant temperature (ECT) sensor signal circuit | 54 | TP sensor shield ground circuit |
| 25 | Intake air temperature (IAT) sensor signal circuit | 55 | TP sensor ground circuit |
| 26 | Knock sensor signal circuit | 56 | MAP sensor ground circuit |
| 27 | Knock sensor ground circuit | 57 | Catalytic converter control oxygen sensor ground circuit |
| 28 | MAF and IAT sensor ground circuit | 58 | ECT sensor ground circuit |
| 29 | Starter motor relay signal circuit | 59 | ECM ground circuit |
| 30 | ECM ground circuit 2 | 60 | Throttle motor ground circuit |