COOLING FAN CONTROL
IPDM E/R outputs pulse duty signal (PWM signal) to the cooling fan control module according to the status of the cooling fan speed request signal received from ECM via CAN communication. Refer to SYSTEM DIAGRAM .
ALTERNATOR CONTROL
IPDM E/R outputs power generation command signal (PWM signal) to the alternator according to the status of the power generation command value signal received from ECM via CAN communication. Refer to SYSTEM DIAGRAM .
Scheme 140
Scheme 141
OUTLINE
- IPDM E/R incorporates a power consumption control function that reduces the power consumption according to the vehicle status.
- IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN communication.
Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.
SLEEP MODE ACTIVATION
- IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communication. Outputting signals to actuators Switches or relays operating Hood switch status is kept 50 ms or less. Output requests are being received from control units via CAN communication.
- IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
DATA MONITOR
Monitor item
| Monitor Item [Unit] | MAIN SIGNALS | Description |
|---|---|---|
| RAD FAN REQ [%] | X | Displays the value of the cooling fan speed signal received from ECM via CAN communication. |
| AC COMP REQ [Off/On] | X | Displays the status of the A/C compressor request signal received from ECM via CAN communication. |
| TAIL&CLR REQ [Off/On] | X | Displays the status of the position light request signal received from BCM via CAN communication. |
| HL LO REQ [Off/On] | X | Displays the status of the low beam request signal received from BCM via CAN communication. |
| HL HI REQ [Off/On] | X | Displays the status of the high beam request signal received from BCM via CAN communication. |
| FR FOG REQ [Off/On] | X | Displays the status of the front fog light request signal received from BCM via CAN communication. |
| FR WIP REQ [Stop/1LOW/Low/Hi] | X | Displays the status of the front wiper request signal received from BCM via CAN communication. |
| WIP AUTO STOP [STOP P/ACT P] | X | Displays the status of the front wiper stop position signal judged by IPDM E/R. |
| WIP PROT [Off/BLOCK] | X | Displays the status of the front wiper fail-safe operation judged by IPDM E/R. |
| IGN RLY1 -REQ [Off/On] | Displays the status of the ignition switch ON signal received from BCM via CAN communication. | |
| IGN RLY [Off/On] | X | Displays the status of the ignition relay judged by IPDM E/R. |
| PUSH SW [Off/On] | Displays the status of the push-button ignition switch judged by IPDM E/R. | |
| INTER/NP SW [Off/On] | Displays the status of the shift position judged by IPDM E/R. | |
| ST RLY CONT [Off/On] | Displays the status of the starter relay status signal received from BCM via CAN communication. | |
| IHBT RLY-REQ [Off/On] | Displays the status of the starter control relay signal received from BCM via CAN communication. | |
| ST/INHI RLY [Off/ST/INHI/UNKWN] | Displays the status of the starter relay and starter control relay judged by IPDM E/R. | |
| DETENT SW [Off/On] | Displays the status of the control device (detention switch) judged by IPDM E/R. | |
| S/L RLY-REQ [Off/On] | Displays the status of the steering lock relay request received from BCM via CAN communication. | |
| S/L STATE [LOCK/UNLOCK/UNKWN] | Displays the status of the steering lock judged by IPDM E/R. | |
| DTRL REQ [Off] | NOTE: The item is indicated, but not monitored. | |
| OIL P SW [Open/Close] | Displays the status of the oil pressure switch judged by IPDM E/R. | |
| HOOD SW [Off/On] | Displays the status of the hood switch judged by IPDM E/R. | |
| HL WASHER REQ [Off] | NOTE: The item is indicated, but not monitored. | |
| THFT HRN REQ [Off/On] | Displays the status of the theft warning horn request signal received from BCM via CAN communication. | |
| HORN CHIRP [Off/On] | Displays the status of the horn reminder signal received from BCM via CAN communication. | |
| CRNRNG LMP REQ [Off] | NOTE: The item is indicated, but not monitored. |
| NOTE |
|---|
| The item is indicated, but not monitored. |
| NOTE |
|---|
| The item is indicated, but not monitored. |
| NOTE |
|---|
| The item is indicated, but not monitored. |
DATA MONITOR REFERENCE
PHYSICAL VALUES
CONNECTOR TERMINALS REFERENCE 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 (L) 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 7 (R) Ground Tail, license plate lamps & interior lamps Output Ignition switch ON Lighting switch OFF 0 V Lighting switch 1ST Battery voltage 10 (1) (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 11 (BR) 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) Ground Ground - Ignition switch ON 0 V 13 (Y) Ground Fuel pump power supply Output Approximately 1 second or more after turning the ignition switch ON 0 V Approximately 1 second after turning the 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 19 (W) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 25 (G) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 26 (2) (R) 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 (O) 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 Ignition switch ON Selector lever in any position other than P or N 0 V Selector lever P or N Battery voltage 32 (SB) 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 (G) Ground Battery power supply Input Ignition switch OFF Battery voltage 39 (P) - CAN-L Input/Output - - 40 (L) - CAN-H Input/Output - - 41 (B) Ground Ground - Ignition switch ON 0 V 42 (Y) Ground Cooling fan relay control Input Ignition switch OFF or ACC 0 V Ignition switch ON 0.7 V 43 (SB) Ground Control device (Detention switch) Input Ignition switch ON Press the selector button (Selector lever P) Selector lever in any position other than P Battery voltage Release the selector button (selector lever P) 0 V 44 (W) Ground Horn relay control Input The horn is deactivated Battery voltage The horn is activated 0 V 45 (G) Ground Anti theft horn relay control Input The horn is deactivated Battery voltage The horn is activated 0 V 46 (BR) Ground Starter relay control Input Ignition switch ON Selector lever in any position other than P or N 0 V Selector lever P or N 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 (W) (1) (SB) (3) 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 (G) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 52 (1) (W) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 53 (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 54 (R) 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 (BR) Ground ECM power supply Output Ignition switch OFF Battery voltage 56 (O) (1) (V) (3) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 57 (LG) (1) (R) (3) 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 (W) 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 (O) 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 74 (G) Ground Ignition relay power supply Output Ignition switch OFF 0 V Ignition switch ON Battery voltage 75 (Y) Ground Oil pressure switch Input Ignition switch ON Engine stopped 0 V Engine running Battery voltage 76 (P) (1) (V) (3) Ground Power generation command signal Output Ignition switch ON 40% is set on "ACTIVE TEST", "ALTERNATOR DUTY" of "ENGINE" 80% is set on "ACTIVE TEST", "ALTERNATOR DUTY" of "ENGINE" 77 (B) (1) (L) (3) Ground Fuel pump relay control Output Approximately 1 second after turning the ignition switch ON Engine running 0 - 1.0 V Approximately 1 second or more after turning the ignition switch ON Battery voltage 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 86 (W) Ground Front fog lamp (RH) Output Lighting switch 2ND Front fog lamp switch ON Daytime running light activated (Only for Canada) Battery voltage Front fog lamp switch OFF 0 V 87 (GR) Ground Front fog lamp (LH) Output Lighting switch 2ND Front fog lamp switch ON Daytime running light activated (Only for Canada) Battery voltage Front fog lamp switch OFF 0 V 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 90 (Y) Ground Headlamp HI (LH) Output Ignition switch ON Lighting switch HI Lighting switch PASS Battery voltage Lighting switch OFF 0 V 91 (P) Ground Parking lamp (RH) Output Ignition switch ON Lighting switch 1ST Battery voltage Lighting switch OFF 0 V 92 (O) Ground Parking lamp (LH) Output Ignition switch ON Lighting switch 1ST Battery voltage Lighting switch OFF 0 V 97 (V) 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 (1) VK engine models (2) Only for the models with ICC system (3) VQ engine models
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Scheme 148
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 |
| Alternator | Outputs the power generation command signal (PWM signal) 0% |
FAIL-SAFE REFERENCE
If No CAN Communication Is Available With BCM
| 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 when the ignition switch is turned ON Turns OFF the tail lamp 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. |
| Front fog lamps | Front fog lamp relay OFF |
| 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 |
FAIL-SAFE REFERENCE
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 for 10 minutes to alert the user to the ignition relay malfunction when the ignition switch is turned OFF. VOLTAGE JUDGMENT REFERENCE Voltage judgment IPDM E/R judgment Operation Ignition relay contact side Ignition relay excitation coil side 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 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 | The front wiper stop position signal does not change for 10 seconds. |
FRONT WIPER SWITCH REFERENCE
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.
Precaution for Procedure without Cowl Top Cover
When performing the procedure after removing cowl top cover, cover the lower end of windshield with urethane, etc.
