IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

POWER DISTRIBUTION SYSTEM

Reference Value
Wiring Diagram - IPDM E/R -
Fail-safe
DTC Index

Reference Value

VALUES ON THE DIAGNOSIS TOOL

Monitor Item	Condition		Value/Status
RAD FAN REQ	Engine idle speed	Changes depending on engine coolant temperature, air conditioner operation status, vehicle speed, etc.	0 ‐ 100 %
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 or HI		On
HL LO REQ	Lighting switch OFF		Off
	Lighting switch 2ND or HI		On
HL HI REQ	Lighting switch OFF		Off
	Lighting switch HI		On
FR FOG REQ	NOTE： The item is indicated, but not monitored.		Off
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	Shift lever in any position other than P or N	Off
	Ignition switch ON	Shift 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		INHI → ST
	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 knob button with shift lever in P position Shift lever in any position other than P	Off
	Release the knob button with shift lever in P position		On
S/L RLY ‐REQ	None of the conditions below are present		Off
	Open the driver door after the ignition switch is turned OFF (for a few seconds) Press the push‐button ignition switch when the steering lock is activated		On
S/L STATE	Steering lock is activated		LOCK
	Steering lock is deactivated		UNLOCK
	[DTC: B210A] is detected		UNKWN
DTRL REQ NOTE： This item is monitored only on the vehicle with the daytime running light system.	Daytime running light system is not operated		Off
	Daytime running light system is operated		On
OIL P SW	NOTE： The item is indicated, but not monitored.		Open
HOOD SW	Close the hood		Off
	Open the hood		On
HL WASHER REQ	NOTE： The item is indicated, but not monitored.		Off
THFT HRN REQ	Not operating		Off
	Panic alarm is activated Horn is activated with VEHICLE SECURITY (THEFT WARNING) SYSTEM		On
HORN CHIRP	Not operating		Off
	Door locking with Intelligent Key (horn chirp mode) Door locking with key fob (horn chirp mode)		On
CRNRNG LMP REQ	NOTE： The item is indicated, but not monitored.		Off

TERMINAL LAYOUT

PHYSICAL VALUES

*: With daytime running light system
Terminal No. (Wire color)		Description		Condition		Value (Approx.)
		Signal name	Input/ Output
+	−
1 (W)	Ground	Battery power supply	Input	Ignition switch OFF		Battery voltage
2 (Y)	Ground	Battery power supply	Input	Ignition switch OFF		Battery voltage
4 (V)	Ground	Front wiper LO	Output	Ignition switch ON	Front wiper switch OFF	0 V
					Front wiper switch LO	Battery voltage
5 (L)	Ground	Front wiper HI	Output	Ignition switch ON	Front wiper switch OFF	0 V
					Front wiper switch HI	Battery voltage
6^* (O)	Ground	Daytime running light relay power supply	Input	Ignition switch OFF		Battery voltage
				Daytime running light system operated		0 V
7 (R)	Ground	Tail, rear side marker, license plate lamps & illuminations	Output	Ignition switch ON	Lighting switch OFF	0 V
					Lighting switch 1ST	Battery voltage
10 (W)	Ground	ECM relay power supply	Output	Ignition switch OFF (More than a few seconds after turning ignition switch OFF)		0 V
				Ignition switch ON Ignition switch OFF (For a few seconds after turning ignition switch OFF)		Battery voltage
11 (SB)	Ground	Steering lock unit power supply	Output	Ignition switch OFF	A few seconds after opening the driver door	Battery voltage
				Ignition switch LOCK	Press the push‐button ignition switch	Battery voltage
				Ignition switch ACC or ON		0 V
12 (B/W)	Ground	Ground	—	Ignition switch ON		0 V
13 (R)	Ground	Fuel pump power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON Engine running		Battery voltage
16 (LG)	Ground	Front wiper stop position	Input	Ignition switch ON	Front wiper stop position	0 V
					Any position other than front wiper stop position	Battery voltage
25 (O)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
27 (Y)	Ground	Ignition relay monitor	Input	Ignition switch OFF or ACC		Battery voltage
				Ignition switch ON		0 V
28 (G)	Ground	Push‐button ignition switch	Input	Press the push‐button ignition switch		0 V
				Release the push‐button ignition switch		Battery voltage
30 (GR)	Ground	Starter relay control	Input	Shift lever in any position other than P or N (Ignition switch ON)		0.4 V
				Shift lever P or N (Ignition switch ON)		Battery voltage
32 (L)	Ground	Steering lock unit condition‐1	Input	Steering lock is activated		0 V
				Steering lock is deactivated		Battery voltage
33 (P)	Ground	Steering lock unit condition‐2	Input	Steering lock is activated		Battery voltage
				Steering lock is deactivated		0 V
36 (LG)	Ground	Battery power supply	Input	Ignition switch OFF		Battery voltage
39 (P)	—	CAN-L	Input/ Output	—		—
40 (L)	—	CAN-H	Input/ Output	—		—
41 (B/Y)	Ground	Ground	—	Ignition switch ON		0 V
42 (G)	Ground	Cooling fan relay control	Input	Ignition switch OFF or ACC		Battery voltage
				Ignition switch ON		0.7 V
43 (SB)	Ground	Control device (Detention switch)	Input	Ignition switch ON	Press the knob button (Shift lever P)	Battery voltage
					Shift lever in any position other than P Release the knob button (Shift lever P)	0 V
44 (W)	Ground	Horn relay control	Input	The horn is deactivated		Battery voltage
				The horn is activated		0 V
46 (O)	Ground	Starter relay control	Input	Shift lever in any position other than P or N (Ignition switch ON)		0 V
				Shift lever P or N (Ignition switch ON)		Battery voltage
48 (L)	Ground	A/C relay power supply	Output	Engine running	A/C switch OFF	0 V
					A/C switch ON (A/C compressor is operating)	Battery voltage
49 (P)	Ground	ECM relay power supply	Output	Ignition switch OFF (More than a few seconds after turning ignition switch OFF)		0 V
				Ignition switch ON Ignition switch OFF (For a few seconds after turning ignition switch OFF)		Battery voltage
51 (LG)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
53 (SB)	Ground	ECM relay power supply	Output	Ignition switch OFF (More than a few seconds after turning ignition switch OFF)		0 V
				Ignition switch ON Ignition switch OFF (For a few seconds after turning ignition switch OFF)		Battery voltage
54 (W)	Ground	Throttle control motor relay power supply	Output	Ignition switch OFF (More than a few seconds after turning ignition switch OFF)		0 V
				Ignition switch ON Ignition switch OFF (For a few seconds after turning ignition switch OFF)		Battery voltage
55 (O)	Ground	ECM power supply	Output	Ignition switch OFF		Battery voltage
56 (R)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
57 (G)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
58 (Y)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
69 (O)	Ground	ECM relay control	Output	Ignition switch OFF (More than a few seconds after turning ignition switch OFF)		Battery voltage
				Ignition switch ON Ignition switch OFF (For a few seconds after turning ignition switch OFF)		0 ‐ 1.5 V
70 (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
71 (SB)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
74 (LG)	Ground	Ignition relay power supply	Output	Ignition switch OFF		0 V
				Ignition switch ON		Battery voltage
77 (B/W)	Ground	Fuel pump relay control	Output	Ignition switch ON Engine running		0 V
80 (W)	Ground	Starter motor	Output	At engine cranking		Battery voltage
83 (R)	Ground	Headlamp LO (RH)	Output	Ignition switch ON	Lighting switch OFF	0 V
					Lighting switch 2ND	Battery voltage
84 (P)	Ground	Headlamp LO (LH)	Output	Ignition switch ON	Lighting switch OFF	0 V
					Lighting switch 2ND	Battery voltage
88 (G)	Ground	Washer pump power supply	Output	Ignition switch ON		Battery voltage
89 (BR)	Ground	Headlamp HI (RH)	Output	Ignition switch ON	Lighting switch HI Lighting switch PASS	Battery voltage
					Lighting switch OFF	0 V
				Daytime running light system operated^*		7.0 V
90 (O)	Ground	Headlamp HI (LH)	Output	Ignition switch ON	Lighting switch HI Lighting switch PASS	Battery voltage
					Lighting switch OFF	0 V
				Daytime running light system operated^*		7.0 V
91 (O)	Ground	Parking lamp (RH)	Output	Ignition switch ON	Lighting switch 1ST	Battery voltage
					Lighting switch OFF	0 V
92 (R)	Ground	Parking lamp (LH)	Output	Ignition switch ON	Lighting switch 1ST	Battery voltage
					Lighting switch OFF	0 V
93 (V)	Ground	Front side marker lamp (RH)	Output	Ignition switch ON	Lighting switch 1ST	Battery voltage
					Lighting switch OFF	0 V
94 (G)	Ground	Front side marker lamp (LH)	Output	Ignition switch ON	Lighting switch 1ST	Battery voltage
					Lighting switch OFF	0 V
97 (Y)	Ground	Cooling fan control	Output	Engine idling		0 ‐ 5 V
104 (LG)	Ground	Hood switch	Input	Close the hood		Battery voltage
				Open the hood		0 V
105^* (V)	Ground	Daytime running light relay control	Input	Daytime running light system	Not operated	Battery voltage
					Operated	0 V

Wiring Diagram - IPDM E/R -

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 the ignition switch is turned ON Outputs the pulse duty signal (PWM signal) 0% when the ignition switch is turned OFF
A/C compressor	A/C relay OFF

If No CAN Communication Is Available With BCM

*: With daytime running light system
Control part	Fail-safe operation
Headlamp	Turns ON the headlamp low relay when the ignition switch is turned ON Turns OFF the headlamp low relay when the ignition switch is turned OFF Headlamp high relay OFF
Parking lamps License plate lamps Side marker lamps Illuminations Tail lamps	Turns ON the tail lamp relay and daytime running light relay^* when the ignition switch is turned ON Turns OFF the tail lamp relay and daytime running light relay^*when the ignition switch is turned OFF
Front wiper	The status just before activation of fail-safe control is maintained until the ignition switch is turned OFF while the front wiper is operating at LO or HI speed. The wiper is operated at LO speed until the ignition switch is turned 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	The status just before activation of fail-safe is maintained.
Starter motor	Starter control relay OFF
Steering lock unit	Steering lock relay OFF

IGNITION RELAY MALFUNCTION DETECTION FUNCTION

IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation coil circuit.
If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay and daytime running light relay^* for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF.

*: With daytime running light system
Voltage judgment		IPDM E/R judgment	Operation
Ignition relay contact side	Ignition relay excitation coil side	IPDM E/R judgment	Operation
ON	ON	Ignition relay ON normal	—
OFF	OFF	Ignition relay OFF normal	—
ON	OFF	Ignition relay ON stuck	Detects DTC “B2098: IGN RELAY ON” Turns ON the tail lamp relay and daytime running light relay^* for 10 minutes
OFF	ON	Ignition relay OFF stuck	Detects DTC “B2099: IGN RELAY OFF”

FRONT WIPER CONTROL

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

Ignition switch	Front wiper switch	Front wiper stop position signal
ON	OFF	The front wiper stop position signal (stop position) cannot be input for 10 seconds.
ON	ON	The front wiper stop position 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 Index

NOTE：

The details of time display are as follows.

CRNT: A malfunction is detected now.
PAST: A malfunction was detected in the past.

IGN counter is displayed on FFD (Freeze Frame data).

The number is 0 when is detected now.
The number increases like 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF → ON.
The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.

×: Applicable

CONSULT display	Fail-safe	Refer to
No DTC is detected. further testing may be required.	—	—
U1000: CAN COMM CIRCUIT	×	Description
B2098: IGN RELAY ON	×	Description
B2099: IGN RELAY OFF	—	Description
B2108: STRG LCK RELAY ON	—	Description
B2109: STRG LCK RELAY OFF	—	Description
B210A: STRG LCK STATE SW	—	Description
B210B: START CONT RLY ON	—	Description
B210C: START CONT RLY OFF	—	Description
B210D: STARTER RELAY ON	—	Description
B210E: STARTER RELAY OFF	—	Description
B210F: INTRLCK/PNP SW ON	—	Description
B2110: INTRLCK/PNP SW OFF	—	Description

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)

Reference Value

Wiring Diagram - IPDM E/R -

Fail-safe

DTC&nbsp;Index

DTC Index