DTC P161B (Flash Code 179) Immobilizer Wrong Response (RZ4E-TC)

1. General circuit diagram

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Note

  • The components connected to the ECM may vary depending on the vehicle specifications.

2. ECM outline

3. ECM pin layout

81 pin (A connector)
PIN No.
 Pin function
1
 ECM power ground
2
 Battery voltage
3
 ECM power ground
4
 ECM power ground
5
 Battery voltage
6
 MIL control (Euro4)
Check engine warning light control (Except Euro4)
7
 -
8
 -
9
 -
10
 Glow relay control
11
 -
12
 A/C compressor relay control
13
 -
14
 Starter cut relay control
15
 -
16
 -
17
 -
18
 -
19
 Vehicle speed sensor signal
20
 Accelerator pedal position sensor 1 shield ground
21
 ECM main relay control
22
 MAF sensor low reference
23
 -
24
 Ignition voltage
25
 Cruise control main switch signal
26
 Clutch switch 1 signal
27
 Stoplight switch 2 signal
28
 -
29
 Ground
30
 Clutch switch 2 signal
31
 -
32
 -
33
 -
34
 Refrigerant pressure switch signal
35
 -
36
 -
37
 -
38
 -
39
 Accelerator pedal position sensor 2 shield ground
40
 ECM main relay control
41
 Accelerator pedal position sensor 1 and cruise control switch low reference
42
 Accelerator pedal position sensor 1, 5 volts reference
43
 ECM signal ground
44
 -
45
 Stoplight switch 1 signal
46
 Ignition switch signal
47
 -
48
 -
49
 -
50
 Neutral switch signal (M/T)
Parking/Neutral switch signal (A/T)
51
 -
52
 Diagnostic request switch
53
 -
54
 -
55
 -
56
 -
57
 -
58
 CAN high signal
59
 MAF sensor shield ground
60
 Accelerator pedal position sensor 2, barometric pressure sensor, and IAT sensor low reference
61
 Accelerator pedal position sensor 2 and barometric pressure sensor 5 volts reference
62
 ECM signal ground
63
 Accelerator pedal position sensor 1 signal
64
 Accelerator pedal position sensor 2 signal
65
 Cruise control switch signal
66
 -
67
 -
68
 -
69
 MAF sensor signal
70
 -
71
 Barometric pressure sensor signal
72
 IAT sensor signal
73
 -
74
 -
75
 -
76
 -
77
 -
78
 CAN low signal
79
 -
80
 -
81
 ECM case ground
40 pin (B connector)
PIN No.
 Pin function
1
 FRP sensor signal
2
 Fuel temperature sensor signal
3
 Engine coolant temperature sensor signal
4
 Intake throttle position sensor signal
5
 Turbocharger control solenoid valve low side
6
 CMP sensor and FRP sensor 5 volts reference
7
 Relief valve control solenoid valve
8
 FRP regulator low side
9
 FRP sensor signal
10
 Boost pressure sensor signal
11
 EGR position sensor signal
12
 CAC temperature sensor signal
13
 -
14
 CKP sensor, EGR position sensor, intake throttle position sensor, and boost pressure sensor 5 volts reference
15
 Turbocharger control solenoid high side
16
 FRP regulator low side
17
 CMP sensor signal
18
 -
19
 CMP sensor and FRP sensor shield ground
20
 CMP sensor and FRP sensor low reference
21
 -
22
 EGR motor 2
23
 Intake throttle motor 2
24
 FRP regulator control high side
25
 Fuel filter switch signal
26
 CKP sensor signal
27
 CKP sensor shield ground / boost pressure and CAC temperature sensor shield ground
28
 CKP sensor, EGR position sensor, intake throttle position sensor, boost pressure sensor, fuel temperature sensor, and engine coolant temperature sensor low reference
29
 -
30
 EGR motor 1
31
 Intake throttle motor 1
32
 FRP regulator control high side
33
 -
34
 -
35
 Common 2 (cylinder No. 2 and No. 3) injector charge voltage
36
 Cylinder No. 4 injector solenoid control
37
 Cylinder No. 2 injector solenoid control
38
 Cylinder No. 1 injector solenoid control
39
 Cylinder No. 3 injector solenoid control
40
 Common 1 (cylinder No. 1 and No. 4) injector charge voltage
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