Nissan Murano: Dtc/circuit Diagnosis / B2099 Ign Relay Off Circ

DTC Description

DTC DETECTION LOGIC

NOTE:

When IPDM E/R power supply voltage is low (Approx. 7 - 8 V for about 1 second), the “DTC: B2099” may be detected.

POSSIBLE CAUSE

• IPDM E/R

• Fuse

• Battery

FAIL-SAFE

—

PERFORM DTC CONFIRMATION PROCEDURE

CONSULT

1. Ignition switch ON.

2. Select “Self Diagnostic Result” mode of “IPDM E/R”.

3. Check DTC.

Is DTC detected?

Refer to DTC Diagnosis Procedure.

To check malfunction symptom before repair: Refer to Intermittent Incident.

Confirmation after repair: Inspection End.

CHECK FUSE

Check that all of the fuses installed on the downstream of the contact point side circuit of the ignition relay-1 in IPDM E/R are not blown.

Is the inspection result normal?

GO TO 2.

Replace the blown fuse after replacing the affected circuit if a fuse is blown.

CHECK IGNITION RELAY-1 CONTROL CIRCUIT VOLTAGE

1. Ignition switch ON

2. Check voltage between IPDM E/R harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   IPDM E/R
   Connector	Terminal
   E119	43	Ground	0 V

Is the inspection result normal?

GO TO 3.

Replace IPDM E/R. Refer to Removal and Installation.

CHECK BATTERY VOLTAGE

Check battery voltage.

Which is the measurement result?

GO TO 4.

Perform battery inspection. Refer to How to Handle Battery.

CHECK INTERMITTENT INCIDENT

Refer to Intermittent Incident.

Inspection End.