Isuzu KB P190. Service manual — part 823
Engine Management – V6 – Diagnostics
Page 6C1-2–14
Engine Control Module Connector C-56
Figure 6C1-2 – 6
Terminal / Pin
Wire Colour
Circuit
Description
Function
C-56–1
P/Y
PWRTRN_HI_2
Ignition Voltage 1
C-56–2
GR/Y
O2_HTR_3
B1S2 O2 Sensor Heater Control (Bank 1 Sensor 2)
C-56–3
P/L
RUN/CRANK
Ignition Voltage 1
C-56–4
Not
Used
C-56–5
Not
Used
C-56–6
Not
Used
C-56–7
W/B
5VDC4
5 Volt Reference 4
C-56–8
V
5VGD4
Low Reference Ground 4
C-56–9
G/B
AC-PRES
A/C Refrigerant Pressure Sensor Signal
C-56–10
R
STOP_SW
Stop Lamp Switch Signal
C-56–11
B/R
AIR_TMP
IAT Sensor Signal
C-56–12
Not
Used
C-56–13
Not
Used
C-56–14
Not
Used
C-56–15
Not
Used
C-56–16
Not
Used
C-56–17
P/L
PWRTRN_HI_1
Ignition Voltage 1
C-56–18
O/W
O2_HTR_4
B2S2 O2 Sensor Heater Control (Bank 2 Sensor 2)
C-56–19
R/L
FLPMP
Fuel Pump Relay Control
C-56–20
BR
FAN_CTL
Cooling Fan Control
C-56–21
Not
Used
C-56–22
B/Y
SPD_4K
Vehicle Speed (VSS)
C-56–23
BR/B
CAN_HI_2
GMLAN Serial Data Bus – High
C-56–24
L/R
PWRTRN_LO
Engine Control Relay Control
C-56–25
B/Y
5VGD7
Low Reference – Ground 7
C-56–26
BR/W
5VDG1
Low Reference – Ground 1
C-56–27
Not
Used
Engine Management – V6 – Diagnostics
Page 6C1-2–15
C-56–28
Not
Used
C-56–29
V
HI_SIG_3
B1S2 O2 Sensor High Signal (Bank 1 Sensor 2)
C-56–30
Not
Used
C-56–31 R/W CRANK_REQ
Crank
Voltage
C-56–32
B
PRKNEU
Park/Neutral Switch Signal
C-56–33
Not
Used
C-56–34
Not
Used
C-56–35
Y
START_RLY
Starter Relay Coil Control
C-56–36
BR/R
BATT +
Battery Positive Voltage
C-56–37
Not
Used
C-56–38
PU
SDI
Data Link Connector (DLC) Serial Data
C-56–39
R
5VDC1
5 Volt Reference 1
C-56–40
BR
5VGD5
Low Reference – Ground 5
C-56–41
P
RTN_4
B2S2 O2 Sensor Low Signal (Bank 2 Sensor 2)
C-56–42
Y/R
FUEL_LVL1
Fuel Level Sensor Signal
C-56–43
Y
MAF
MAF Sensor Signal
C-56–44
Y
PED_POS_2
APP Sensor 2 Signal
C-56–45
Not
Used
C-56–46
GR/R
CRU_ETC_TCC
Brake Switch (S220 – ‘C’) Cruise Cancel Signal
C-56–47
Not
Used
C-56–48
Not
Used
C-56–49
GR/R
AC_CLU
A/C Compressor Clutch Relay Control
C-56–50
BR/Y
MIL
Malfunction indicator Lamp
C-56–51
Not
Used
C-56–52
Not
Used
C-56–53
BR
CRCTL_CLU_SW
Clutch Switch (S42) Cruise Cancel Signal
C-56–54
Not
Used
C-56–55
R/G
CAN_LO_2
GMLAN Serial Data Bus – Low
C-56–56
BR/Y
5VDC3
5 Volt Reference 3
C-56–57
BR/R
RTN_3
B1S2 O2 Sensor Low Signal (Bank 1 Sensor 2)
C-56–58 R/Y
ACC
Accessory
Voltage
C-56–59
Not
Used
C-56–60
L
PED_POS_1
APP Sensor 1 Signal
C-56–61
V
HI_SIG_4
B2S2 O2 Sensor High Signal (Bank 2 Sensor 2)
C-56–62
Not
Used
C-56–63
Not
Used
C-56–64
Not
Used
Engine Management – V6 – Diagnostics
Page 6C1-2–16
3.3
Engine Control Connector End Views
Figure 6C1-2 – 7
Engine Management – V6 – Diagnostics
Page 6C1-2–17
Figure 6C1-2 – 8
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