Nissan Versa

 Sedan Service Manual

Electrical & power control » Power control system (PCS)
IPDM E/R (Intelligent power distribution module engine room)

Reference Value

VALUES ON THE DIAGNOSIS TOOL

TERMINAL LAYOUT

PHYSICAL VALUES

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

If No CAN Communication Is Available With BCM

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.

NOTE: The tail lamp turns OFF when the ignition switch is turned 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.

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: 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.

WIRING DIAGRAM

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

Wiring Diagram

DTC/CIRCUIT DIAGNOSIS

Precautions

System

Diagnosis system (IPDM E/R)

IPDM E/R (Intelligent power distribution module engine room)

U1000 CAN Comm circuit

B2098 Ignition relay on stuck

B2099 Ignition relay off stuck

Power supply and ground circuit

IPDM E/R

Precautions

System

Diagnosis system (IPDM E/R)

IPDM E/R (Intelligent power distribution module engine room)

U1000 CAN Comm circuit

B2098 Ignition relay on stuck

B2099 Ignition relay off stuck

Power supply and ground circuit

IPDM E/R

Precautions

Power distribution system

Diagnosis and repair work flow

U1000 CAN Comm circuit

B2614 ACC Relay circuit

B2615 Blower relay circuit

B2616 Ignition relay circuit

B2618 BCM

B261A Push-button ignition switch

B26F1 Ignition relay

B26F2 Ignition relay

B26F6 BCM

Push-button ignition switch

Push-button ignition switch does not operate

Push-button ignition switch