Isuzu 4HL1 Workshop Manual page 21

No.
9 Cornering lamp relay
10 Air conditioner thermo relay
12 V: Charge relay
11
24 V: Key on relay
12 Heater & air conditioner relay
24 V: PTO cut relay for electric PTO in fire engine (MT)
24 V: PTO solenoid relay for electric PTO (AT)
13 12 V: Exhaust brake cut relay (MT)
24 V: Idle on relay for fire engine (AT)
24 V: Idle stop, wiper relay (with CFS (clutch free system))
24 V: PTO solenoid relay for electric PTO (MT)
24 V: PTO buzzer relay for electric PTO (AT)
14 12 V: OD off relay (AT)
24 V: Idle keep relay for fire engine (AT)
24 V: Idle stop, radio relay (with CFS)
24 V: PTO main relay for electric PTO (MT)
24 V: Garbage relay for garbage collector (AT)
15
24 V: Indicator lamp relay for fire engine (AT)
24 V: Idle stop, engine control module relay (with CFS)
4WD relay
16
24 V: Idle stop, mirror relay (with CFS)
24 V: Full automatic air conditioner, high relay
17 24 V: Automatic air conditioner, high relay
24 V: Shift lock relay for fire engine (AT)
24 V: Shift relay for fire engine (AT)
18
24 V: PTO main relay for electric PTO (MT)
19 24 V: PTO solenoid relay for electric PTO (MT)
20 24 V: PTO cut relay for electric PTO (MT)
Engine Control System 1A-19
Legend