1A-30 Engine Control System No. Connected to No. Connected to A2 Startar switch A13 Tech 2 communications (DLC) A3 Key switch A14 Not used A4 Not used A15 Accelator position signal output (A/T) A5 Exhaust brake cut signal (A/T) A16 Exhaust brake cut signal (A/T) A6 Cluch switch A17 P/N switch, neutral switch A7 Not used A18 Not used A8 Not used A19 Freezer switch A9 Diagnostic switch (DLC) A20 Air conditioner switch A10 Idle position switch A21 Exhaust brake switch A11 Power system ground A22 Swirl control VSV No. Connected to No.
Connected to B1 Not used B7 Stop lamp relay B2 Warm-up switch B8 Q down (ASR) B3 Exhaust brake operating signal B9 Exhaust brake answer signal (ASR) B4 Not used B10 Tachometer output B5 Crank position sensor (+) B11 Crank position sensor (–) B6 Pump cam position sensor (+) B12 Pump cam position sensor (–) No. Connected to No.
Connected to C1 Coolant temperature sensor (+) C9 Intake air pressure C2 Not used C10 Idle up volume C3 Sensor power (AP, PTO accelerator, Idle up volume) C11 Accelerator position sensor signal C4 Sensor power (MAP) C12 Fuel temperature sensor (+) C5 Sensor ground (MAP, coolant temp., intake temp., fuel temp.) C13 Not used C6 Sensor ground (AP, PTO accelerator, Idle up volume) C14 PTO position sensor signal C7 Not used C15 Intake temperature sensor (+) C8 Not used C16 Not used No. Connected to No. Connected to D1 Not used D14 Not used D2 Not used D15 Not used D3 Pump ROM communications D16 EDU fail signal input D4 Exhaust brake VSV1 D17 Pump ROM communications D5 Not used D18 Not used