Nissan Murano: Power Control System :: Ipdm E/r / Ecu Diagnosis Information. Ipdm E/r

Nissan Murano (Z52) 2015-2024 Service Manual / Electrical & Power Control / Power Control System :: Ipdm E/r / Ecu Diagnosis Information. Ipdm E/r

Values on the Diagnosis Tool

NOTE:

The following table includes information (items) inapplicable to this Nissan Murano vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items:

Monitor Item Condition Value/Status
MOTOR FAN REQ Engine idle speed Changes depending on engine coolant temperature, air conditioner operation status, Nissan Murano vehicle speed, etc. 1,2,3,4
AC COMP REQ Engine running A/C switch OFF Off

A/C switch ON

(Compressor is operating) 		On
TAIL&CLR REQ Lighting switch OFF Off
Lighting switch 1ST, 2ND, HI or AUTO (Light is illuminated) On
HL LO REQ Lighting switch OFF Off
Lighting switch 2ND HI or AUTO (Light is illuminated) On
HL HI REQ Lighting switch OFF Off
Lighting switch HI On
FR FOG REQ

Lighting switch 2ND or

AUTO (Light is illuminated) 		Front fog lamp switch OFF Off

  • Front fog lamp switch ON

  • Daytime running light activated

 On
FR WIP REQ Ignition switch ON Front wiper switch OFF STOP
Front wiper switch INT 1LOW
Front wiper switch LO Low
Front wiper switch HI Hi
WIP AUTO STOP Ignition switch ON Front wiper stop position STOP P
Any position other than front wiper stop position ACT P
WIP PROT Ignition switch ON Front wiper operates normally Off
Front wiper stops at fail-safe operation BLOCK
IGN RLY1 -REQ Ignition switch OFF or ACC Off
Ignition switch ON On
IGN RLY Ignition switch OFF or ACC Off
Ignition switch ON On
PUSH SW Release the push-button ignition switch Off
Press the push-button ignition switch On
INTER/NP SW Ignition switch ON CVT selector lever in any position other than P or N Off
CVT selector lever in P or N position On
ST RLY CONT Ignition switch ON Off
At engine cranking On
IHBT RLY -REQ Ignition switch ON Off
At engine cranking On
ST/INHI RLY Ignition switch ON Off
At engine cranking ST →INHI
The status of starter relay or starter control relay cannot be recognized by the battery voltage malfunction, etc. when the starter relay is ON and the starter control relay is OFF UNKWN
DETENT SW Ignition switch ON

  • Press the selector button with CVT selector lever in P position

  • CVT selector lever in any position other than P

 Off
Release the CVT selector button with CVT selector lever in P position On
DTRL REQ DTRL OFF Off
DTRL ON On
OIL P SW

NOTE:

This item is indicated, but not monitored.

 Open/Close
HOOD SW Hood closed Off
Hood open On
THFT HRN REQ Not operated Off

  • Panic alarm is activated

  • Horn is activated with Nissan Murano Vehicle SECURITY (THEFT WARNING) SYSTEM

 On
HORN CHIRP Not operated Off
Door locking with Intelligent Key (horn chirp mode) On
HOOD SW 2 Hood closed On
Hood open Off
Reference Value

TERMINAL LAYOUT

PHYSICAL VALUES

Terminal No.

(Wire color) 		Description Condition

Value

(Approx.)
Signal name Input/ Output
+ −

1

(R) 		Ground Battery power supply Input Ignition switch OFF Battery voltage

2

(L) 		Ground Battery power supply Input Ignition switch OFF Battery voltage

3

(G) 		Ground Battery power supply Input Ignition switch ON Battery voltage

4

(P) 		Ground Cooling fan relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

6

(R) 		Ground Cooling fan relay-1 power supply Input Ignition switch OFF 0 V
Ignition switch ON Battery voltage

7

(B) 		Ground Ground — Ignition switch ON 0 V

9

(G) 		Ground Tail lamp relay output Output Ignition switch ON Lighting switch OFF 0 V
Lighting switch 1ST Battery voltage

10

(L) 		Ground Tail lamp relay output Output Ignition switch ON Lighting switch OFF 0 V
Lighting switch 1ST Battery voltage

11

(Y) 		Ground Front wiper LO power supply Output Ignition switch ON Front wiper switch OFF 0 V
Front wiper switch LO Battery voltage

13

(L) 		Ground ECM relay output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

14

(LG) 		Ground Daytime running light relay power supply Output Ignition switch OFF Battery voltage

15

(W) 		Ground Fuel pump relay output Output Approximately 1 second or more after placing Ignition switch ON 0 V

  • Approximately 1 second after placing ignition switch ON

  • Engine running

 Battery voltage

18

(L) 		Ground Front wiper HI power supply Output Ignition switch ON Front wiper switch OFF 0 V
Front wiper switch HI Battery voltage

191

(SB) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

21

(L) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

22

(Y) 		Ground Horn relay control Input The horn is deactivated Battery voltage
The horn is activated 0 V

23

(Y) 		Ground Horn switch signal Input The horn is deactivated Battery voltage
The horn is activated 0 V

27

(BG) 		Ground Cooling fan relay-2 control Input Ignition switch OFF or ACC 0 V
Ignition switch ON 0.7 V

28

(P) 		— CAN-Low Input/ Output — —

29

(L) 		— CAN-High Input/ Output — —

31

(BG) 		Ground CVT shift selector (detent switch) signal Input Ignition switch ON Press the CVT shift selector button (CVT shift selector lever P) Battery voltage

  • CVT shift selector lever in any position other than P

  • Release the CVT shift selector button (CVT shift selector lever P)

 0 V

33

(R) 		Ground Starter relay control Input Ignition switch ON CVT shift selector lever in any position other than P or N 0 V
CVT shift selector lever P or N Battery voltage

34

(BR) 		Ground Front wiper auto stop signal Input Ignition switch ON Front wiper stop position 0 V
Any position other than front wiper stop position Battery voltage

35

(BR) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

36

(W) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

37

(W) 		Ground Starter relay control Input Ignition switch ON CVT shift selector lever in any position other than P or N position 0 V
CVT shift selector lever in P or N position Battery voltage

38

(P) 		Ground Push-button ignition switch signal Input Press the push-button ignition switch 0 V
Release the push-button ignition switch Battery voltage

39

(G) 		Ground Cooling fan relay-3 control Input Ignition switch OFF or ACC 0 V
Ignition switch ON 0.7V

41

(B) 		Ground Ground — Ignition switch ON 0 V

43

(L) 		Ground Ignition relay-1 control* Input Ignition switch OFF or ACC Battery voltage
Ignition switch ON 0 V

45

(LG) 		Ground Refrigerant pressure sensor signal —

  • Ignition switch ON (READY)

  • Both A/C switch and blower motor switch ON (A/C compressor operates)

 1.0 - 4.0 V

47

(Y) 		Ground Refrigerant pressure sensor power supply — Ignition switch ON 5 V

48

(V) 		Ground Refrigerant pressure sensor ground — Ignition switch ON 0 V

49

(BG) 		Ground Ambient sensor signal — Ignition switch ON 5 V

50

(G) 		Ground Ambient sensor ground — Ignition switch ON 0 V

51

(W) 		Ground Starter motor power supply Output At engine cranking Battery voltage
Other than engine cranking 0 V

52

(W) 		Ground ECM relay output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

53

(W) 		Ground ECM relay output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

54

(L) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

55

(W) 		Ground Ignition relay-1 output Output

Ignition switch OFF

(For a few seconds after placing ignition switch OFF) 		0 V

  • Ignition switch ON

  • Ignition switch OFF (More than a few seconds after placing ignition switch OFF)

 Battery voltage

56

(P) 		Ground A/C compressor power supply Output Engine running A/C compressor OFF 0 V

A/C compressor ON

(A/C compressor is operating) 		Battery voltage

57

(R) 		Ground Throttle control module relay output Output

Ignition switch OFF

(For a few seconds after placing ignition switch OFF) 		0 V

  • Ignition switch ON

  • Ignition switch OFF

    (More than a few seconds after placing ignition switch OFF)

 Battery voltage

58

(GR) 		Ground ECM battery power supply Output Ignition switch OFF Battery voltage

59

(L) 		Ground ECM relay output Output

Ignition switch OFF

(For a few seconds after placing ignition switch OFF) 		0 V

  • Ignition switch ON

  • Ignition switch OFF

    (More than a few seconds after placing ignition switch OFF)

 Battery voltage

60

(LG) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

61

(Y) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

63

(L) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

64

(LG) 		Ground Ignition relay-1 output Output Ignition switch OFF 0 V
Ignition switch ON Battery voltage

65

(G) 		Ground Throttle control motor relay control Output Ignition switch ON → OFF

0 -1.0 V

↓

Battery voltage

↓

0 V
Ignition switch ON 0 - 1.0 V

66

(G) 		Ground Transmission range switch signal Input Ignition switch ON CVT shift selector lever in P or N position Battery voltage
CVT shift selector lever in any position other than P or N position 0 V

69

(W) 		Ground Fuel pump relay control Output

  • Approximately 1 second after placing ignition switch ON

  • Engine running

 0 - 1.0 V
Approximately 1 second or more after placing ignition switch ON Battery voltage

72

(V) 		Ground ECM relay control Output

Ignition switch OFF

(For a few seconds after placing ignition switch OFF) 		Battery voltage

  • Ignition switch ON

  • Ignition switch OFF

    (More than a few seconds after placing ignition switch OFF)

 0 - 1.5 V

74

(W) 		Ground Ignition relay-1 output Output Ignition switch ON Battery voltage

75

(SB) 		Ground Headlamp RH LO power supply Output Ignition switch ON Lighting switch OFF 0 V
Lighting switch 2ND Battery voltage

76

(L) 		Ground Headlamp LH LO power supply Output Ignition switch ON Lighting switch OFF 0 V
Lighting switch 2ND Battery voltage

782

(W) 		Ground Front fog lamp RH power supply Output Ignition switch ON Fog lamp switch OFF 0 V
Fog lamp switch ON Battery voltage

792

(L) 		Ground Front fog lamp LH power supply Output Ignition switch ON Fog lamp switch OFF 0 V
Fog lamp switch ON Battery voltage

80

(LG) 		Ground Headlamp RH HI power supply Output Ignition switch ON

  • Lighting switch HI

  • Lighting switch PASS

 Battery voltage
Lighting switch OFF 0 V

81

(G) 		Ground Headlamp LH HI power supply Output Ignition switch ON

  • Lighting switch HI

  • Lighting switch PASS

 Battery voltage
Lighting switch OFF 0 V

82

(W) 		Ground Refrigerant pressure sensor signal —

  • Ignition switch ON (READY)

  • Both A/C switch and blower motor switch ON (electric compressor operates)

 1.0 - 4.0 V

83

(G) 		Ground Refrigerant pressure sensor power supply — Ignition switch ON 5 V

85

(Y/V) 		Ground Daytime running light relay control Output Ignition switch ON Daytime light system active Battery voltage
Ignition switch ON Daytime light system inactive 0 V

86

(B) 		Ground Refrigerant pressure sensor ground — Ignition switch ON 0 V

87

(BR) 		Ground Ambient sensor signal — Ignition switch ON 5 V

90

(GR) 		Ground Tail lamp relay output Output Ignition switch ON Lighting switch 1ST Battery voltage
Lighting switch OFF 0 V

94

(G/W) 		Ground Hood switch (CLOSED) signal Input Ignition switch ON Hood closed 0 V
Hood open Battery voltage

95

(O) 		Ground Ambient sensor ground — Ignition switch ON 0 V

96

(G/O) 		Ground Hood switch (OPEN) signal Input Ignition switch ON Hood closed Battery voltage
Hood open 0 V

*: Ignition battery saver logic turns OFF the IPDM E/R and BCM if the ignition is ON for a period of time with the engine OFF.

1: With all wheel drive

2: With front fog lamps

Fail Safe

CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to normal control.

If No CAN Communication Is Available With ECM

Control part Fail-safe operation
Cooling fan

  • Outputs the pulse duty signal (PWM signal) 100% when ignition switch ON.

  • Outputs the pulse duty signal (PWM signal) 0% when the ignition switch OFF.
A/C compressor A/C relay OFF
Generator Outputs the power generation command signal (PWM signal) 0%.

If No CAN Communication Is Available With BCM

Control part Fail-safe operation
Headlamp

  • Turns ON the headlamp low relay when ignition switch ON.

  • Turns OFF the headlamp low relay when ignition switch OFF.

  • Headlamp high relay OFF

  • Parking lamps

  • Side marker lamps

  • License plate lamps

  • Tail lamps

  • Turns ON the tail lamp relay when ignition switch ON.

  • Turns OFF the tail lamp relay when ignition switch OFF.
Front wiper

  • The status just before activation of fail-safe control is maintained until ignition switch OFF while the front wiper is operating at LO or HI speed.

  • The wiper is operated at LO speed until ignition switch OFF if the fail-safe control is activated while the front wiper is set in the INT mode and the front wiper motor is operating.
Horn Horn OFF
Ignition relay-1 The status just before activation of fail-safe is maintained.

IGNITION RELAY-1 MALFUNCTION DETECTION FUNCTION

  • IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay-1 inside it.

  • IPDM E/R judges the ignition relay-1 error if the voltage differs between the contact circuit and the excitation coil circuit.

  • If the ignition relay-1 cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to alert the user to the ignition relay-1 malfunction when ignition switch OFF.

DTC Ignition switch Ignition relay-1 Tail lamp relay
Normal operation ON ON —
Normal operation OFF OFF —
B2098: IGN RELAY ON CIRC OFF ON ON (10 minutes)
B2099: IGN RELAY OFF CIRC ON OFF —

NOTE:

The tail lamp turns OFF when ignition switch ON.

FRONT WIPER CONTROL

IPDM E/R detects front wiper stop position by a front wiper auto stop signal.

When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper after repeating a front wiper 10 second activation and 20 second stop five times.

Ignition switch Front wiper switch Auto stop signal
ON OFF Front wiper stop position signal cannot be input 10 seconds.
ON The signal does not change for 10 seconds.

NOTE:

This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item “WIP PROT” while the wiper is stopped.

STARTER MOTOR PROTECTION FUNCTION

IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains active for 90 seconds.

DTC Inspection Priority Chart
Priority DTC No. CONSULT display
1 U1000 CAN COMM CIRCUIT
U1010 CONTROL UNIT(CAN)
2 B2098 IGN RELAY ON CIRC
B2099 IGN RELAY OFF CIRC
3 B210B STR CONT RLY ON CIRC
B210C STR CONT RLY OFF CIRC
B210D STARTER RLY ON CIRC
B210E STARTER RLY OFF CIRC
B210F INTERLOCK/PN ON CIRC
B2110 INTERLOCK/PN OFF CIRC
DTC Index
CONSULT display Fail-safe TIMENOTE Refer to
No DTC is detected. Further testing may be required. — — — —
U1000: CAN COMM CIRCUIT — CRNT 1 – 39 DTC Description
U1010: CONTROL UNIT(CAN) — CRNT 1 – 39 DTC Description
B2098: IGN RELAY ON CIRC × CRNT 1 – 39 DTC Description
B2099: IGN RELAY OFF CIRC × CRNT 1 – 39 DTC Description
B210B: STR CONT RLY ON CIRC — CRNT 1 – 39 DTC Description
B210C: STR CONT RLY OFF CIRC — CRNT 1 – 39 DTC Description
B210D: STARTER RLY ON CIRC — CRNT 1 – 39 DTC Description
B210E: STARTER RLY OFF CIRC — CRNT 1 – 39 DTC Description
B210F: INTERLOCK/PN ON CIRC — CRNT 1 – 39 DTC Description
B2110: INTERLOCK/PN OFF CIRC — CRNT 1 – 39 DTC Description

NOTE:

The details of TIME display are as follows.

  • CRNT: The malfunctions that are detected now

  • 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It increases like 0 → 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF → ON. It is fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is detected again in the process.

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    Dtc/circuit Diagnosis

    ..

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