Scheme 112
Note. *1: With front fog lamp system *2: With daytime running light system
System Description
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication.
| CAUTION | IPDM E/R integrated relays cannot be removed. |
| Control relay | Input/output | Transmit unit | Control part | Reference Information |
|---|---|---|---|---|
| Headlamp low relay | Low beam request signal | BCM (CAN) | Headlamp low Aiming motor (With xenon headlamp) | SYSTEM DESCRIPTION (Xenon headlamp) SYSTEM DESCRIPTION (Halogen headlamp) |
| Headlamp high relay | High beam request signal | Headlamp high | ||
| Front fog lamp relay | Front fog light request signal | BCM (CAN) | Front fog lamp NOTE: With front fog lamp system | FRONT FOG LAMP SYSTEM |
| Tail lamp relay | Position light request signal | BCM (CAN) | Parking lamp License plate lamp Tail lamp Side marker lamp | PARKING, LICENSE PLATE AND TAIL LAMPS SYSTEM |
| Illuminations | ILLUMINATION CONTROL SYSTEM | |||
| Front wiper relay Front wiper high relay | Front wiper request signal | BCM (CAN) | Front wiper | SYSTEM DESCRIPTION |
| Front wiper stop position signal | Front wiper motor | |||
| Rear window defogger relay | Rear window defogger switch signal | BCM (CAN) | Rear window defogger | SYSTEM DESCRIPTION |
| Starter relay | Ignition switch START signal Transmission range switch signal | Ignition switch Transmission range switch | Starter motor | SYSTEM DESCRIPTION (With Intelligent Key) SYSTEM DESCRIPTION (Without Intelligent Key) |
| Cooling fan relay-1 Cooling fan relay-2 Cooling fan relay-3 Cooling fan relay-4 Cooling fan relay-5 | Cooling fan speed request signal | ECM (CAN) | Cooling fan | COOLING FAN CONTROL (For California) COOLING FAN CONTROL [For U.S.A. (federal) and Canada] COOLING FAN CONTROL (For Mexico) |
| A/C relay | A/C compressor request signal | ECM (CAN) | A/C compressor (Magnet clutch) | SYSTEM DESCRIPTION |
| Ignition relay | Ignition switch ON signal | Ignition switch | Each control unit, sensor, actuator and relay (Ignition power supply) | B2099 IGNITION RELAY OFF STUCK |
| Horn relay | Horn request signal | BCM (CAN) | Horn | Vehicle security system VEHICLE SECURITY SYSTEM (With Intelligent Key) VEHICLE SECURITY SYSTEM (Without Intelligent Key) Panic alarm INTELLIGENT KEY SYSTEM (With Intelligent Key) REMOTE KEYLESS ENTRY SYSTEM (Without Intelligent Key) Horn reminder INTELLIGENT KEY SYSTEM (With Intelligent Key) REMOTE KEYLESS ENTRY SYSTEM (Without Intelligent Key) |
| Daytime running light relay NOTE: With daytime running light system | Daytime running light request signal | BCM (CAN) | Headlamp HI (Daytime running light operation) | DAYTIME RUNNING LIGHT SYSTEM |
| NOTE |
|---|
| With front fog lamp system |
| NOTE |
|---|
| With daytime running light system |
RELAY CONTROL SYSTEM REFERENCE CHART
Scheme 113
Scheme 114
Note. *: For Mexico
- IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM and ECM via CAN communication. Refer to " «OIL PRESSURE WARNING LAMP : SYSTEM DIAGRAM»(ref-405876-S41060500852011062300000) ".
- IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN communication. Refer to " «SYSTEM DIAGRAM»(ref-405872-S16376827652011062300000) " (With Intelligent Key) or " «SYSTEM DIAGRAM»(ref-405872-S00258117922011062300000) " (Without Intelligent Key).
Scheme 115
Scheme 116
Diagnosis Description
Auto active test
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
- Oil pressure warning lamp
- Rear window defogger
- Front wiper (LO, HI)
- Parking lamp
- License plate lamp
- Tail lamp
- Side marker lamp
- Front fog lamp
- Headlamp (LO, HI)
- A/C compressor (magnet clutch)
- Cooling fan (LO, MID, HI)
Operation procedure
- Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper operation) NOTE: When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
- Turn the ignition switch OFF.
- Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the ignition switch OFF. CAUTION: Close passenger door.
- Turn the ignition switch ON within 10 seconds. Then the horn sounds once and the auto active test starts. NOTE: Only a vehicle with the vehicle security system, the horn sounds.
- The oil pressure warning lamp starts blinking when the auto active test starts.
- After a series of the following operations is repeated 3 times, auto active test is completed. NOTE: When auto active test mode has to be cancelled halfway through test, turn the ignition switch OFF. CAUTION: If auto active test mode cannot be actuated, check door switch system. Never start the engine.
Inspection in auto active test mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.
| Operation sequence | Inspection location | Operation |
|---|---|---|
| A | Oil pressure warning lamp | Blinks continuously during operation of auto active test. |
| 1 | Rear window defogger | 10 seconds |
| 2 | Front wiper motor | LO for 5 seconds --> HI for 5 seconds |
| 3 | Parking lamp License plate lamp Tail lamp Side marker lamp Front fog lamp Headlamps HI (daytime running light operation) (1) | 10 seconds |
| 4 | Headlamp | LO 10 seconds --> <=> OFF 5 times |
| 5 | A/C compressor (magnet clutch) | ON <=> OFF 5 times |
| 6 | Cooling fan | LO for 5 seconds --> MID for 3 seconds --> HI for 2 seconds |
| NOTE: (1) With daytime running light system | ||
| NOTE |
|---|
| (1) With daytime running light system |
| (1) | With daytime running light system |
AUTO ACTIVE TEST MODE REFERENCE CHART
Concept of auto active test
Scheme 117
- IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communication. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto active test starts successfully.
- The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode
| Symptom | Inspection contents | Possible cause | |
|---|---|---|---|
| Rear window defogger does not operate | Perform auto active test. Does the rear window defogger operate? | YES | BCM signal input circuit |
| NO | Rear window defogger Rear window defogger ground circuit Harness or connector between IPDM E/R and rear window defogger IPDM E/R | ||
| Any of the following components do not operate Parking lamp License plate lamp Tail lamp Side marker lamp Front fog lamp Headlamp (HI, LO) Front wiper motor (HI, LO) | Perform auto active test. Does the applicable system operate? | YES | BCM signal input circuit |
| NO | Lamp or motor Lamp or motor ground circuit Harness or connector between IPDM E/R and applicable system IPDM E/R | ||
| Headlamps HI (daytime running light operation) do not operate | Perform auto active test. Do headlamps HI (daytime running light operation) operate? | YES | CAN communication signal between ECM and BCM CAN communication signal between combination meter and BCM BCM signal input circuit |
| NO | Daytime running light relay power supply circuit Harness or connector between IPDM E/R and daytime running light relay Daytime running light relay | ||
| A/C compressor does not operate | Perform auto active test. Does the magnet clutch operate? | YES | BCM signal input circuit CAN communication signal between BCM and ECM CAN communication signal between ECM and IPDM E/R |
| NO | Magnet clutch Harness or connector between IPDM E/R and magnet clutch IPDM E/R | ||
| Oil pressure warning lamp does not operate | Perform auto active test. Does the oil pressure warning lamp blink? | YES | Harness or connector between IPDM E/R and oil pressure switch Oil pressure switch IPDM E/R |
| NO | CAN communication signal between IPDM E/R and BCM CAN communication signal between BCM and combination meter Combination meter | ||
| Cooling fan does not operate | Perform auto active test. Does the cooling fan operate? | YES | ECM signal input circuit CAN communication signal between ECM and IPDM E/R |
| NO | Cooling fan motor-2 power supply circuit Cooling fan motor-1 ground circuit Cooling fan relay-4 or cooling fan relay-5 power supply circuit Cooling fan relay-5 ground circuit Harness or connector between IPDM E/R and cooling fan motor Harness or connector between IPDM E/R, and cooling fan relay-4 or cooling fan relay-5 Harness or connector between cooling fan motor-2, and cooling fan relay-4 or cooling fan relay-5 Cooling fan relay-4 or cooling fan relay-5 Cooling fan motor IPDM E/R | ||
AUTO ACTIVE TEST MODE DIAGNOSIS CHART
Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to " CAN COMMUNICATION SIGNAL CHART ".
The ignition relay integrated in IPDM E/R is operated with ignition switch ON signal from the ignition switch.