178
TROUBLESHOOTING
[Engine system]
Inspection item Measurement point Normal voltage (V) Normal resistance value (Ω)Remark
Throttle valve (STM) CN6[16] Brown
-30 ~ +30 V DC
pulse wave
1-2
CN6[18] Red 2-3 120 Ω
CN6[19] Blue 4-5 (77 ℉25( ℃))
CN6[21] Orange 5-6
CN6[15] Yellow 1-3 240 Ω
CN6[17] White 4-6 (77 ℉25( ℃))
Engine oil pressure switch
(OLP)
CN6[3]-[4] Brown-Brown
ON : 1 V DC or less
OFF : 11 ~ 13 V DC
1 MΩ or more (OFF)
1 Ω or less (ON)
Engine oil pressure switch
disconnection is detected when
engine oil pressure switch OFF
is detected for 5 seconds before
starter ON at engine starting.
(engine oil pressure switch
disconnection→71-0)
Oil level switch (OIL-LVL) CN4[5]-[6] Blue ON : 1 V DC or less
OFF : 11 ~ 13 V DC
1 MΩ or more (OFF)
1 Ω or less (ON)
Electromagnetic gas valves
1, 2 (GV1, 2)
CN8[4]-[10] Black-White
11 ~ 13 V DC 21 Ω
CN8[5]-[11] Red-Green
Starter (STR) Motor + side terminal-
Ground
11 ~ 19 V DC 0.01 Ω (68 ℉ 20( ℃ ))
Starter pinion coil Starter relay output side or
starter pinion terminal-
Ground
11 ~ 13 V DC 0.24 Ω (68 ℉ 20( ℃ ))
Fuel gas flow control valve
(FUEL)
CN6[20] Brown
-30 ~ +30 V DC
pulse wave
1-2
CN6[22] Red 2-4 120 Ω
CN6[26] Blue 5-7 (77 ℉25( ℃))
CN6[24] Orange 7-8
CN6[23] Yellow 1-4 240 Ω
CN6[25] White 5-8 (77 ℉25( ℃))
Engine exhaust air temper-
ature sensor (E/G E)
(unit with deodorant kit
only)
CN6[7]-[8] Yellow-Yellow Temperature
( ℉ ( ℃ ))
Resistance
(Ω)
• Disconnection temperature is
detected (lower than 392 ℉
(200
℃ )).
When the deodorant option is
installed, disconnection is
detected for 4 minutes during
compressor operation. (en-
gine exhaust air temperature
sensor disconnection→72-6)
392(200) 371.1 k
572 (300) 52.6 k
752 (400) 11.5 k
932 (500) 3.53 k
1112 (600) 1.38 k
1292 (700) 0.64 k
1472 (800) 0.34 k
Power supply PCB 8 TON
CN1[1]-[2] Red-Black
CN1[7]-[8] Yellow-Black
CN1[3]-[4] Blue-Black
CN3[1]-[2] Red-White
11 ~ 13 V DC
13 ~ 15 V DC
15 ~ 17 V DC
19 ~ 21 V DC
15 TON
CN1[1]-[2] Red-Black
CN1[7]-[8] Yellow-Black
CN1[3]-[4] Blue-Black
CN3[1]-[2] Red-White
11 ~ 13 V DC
11 ~ 13 V DC
15 ~ 17 V DC
19 ~ 21 V DC
Engine speed sensor (WB)
(Ne is 15 TON only)
Ne; CN7[3]-[4]
Orange-Brown
1100 ± 150 Ω (68 ℉ 20( ℃ ))
G2; CN7[1]-[2] Red-Black
To Next Page
Loading...
Need help?
General