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

Regarding Wiring Diagram information, refer to Wiring Diagram .

1. CHECK FUSIBLE LINKS

   Check that the following IPDM E/R fusible links are not blown.

   FUSIBLE LINKS REFERENCE CHART
   
   

   Terminal No.	Signal name	Fusible link No.
   1	Battery	A, D
   2		C
   22		I

   Is the fusible link blown? 

   YES: Replace the blown fusible link after repairing the affected circuit.

   NO: GO TO 2

2. CHECK BATTERY POWER SUPPLY CIRCUIT
   1. Turn ignition switch OFF.
   2. Disconnect IPDM E/R.
   3. Check voltage between IPDM E/R harness connectors and ground.
      VOLTAGE REFERENCE CHART
      
      

      Terminals			Ignition switch position	Voltage (V) (Approx.)
      (+)		(-)
      Connector	Terminal
      E118 (A)	1	Ground	OFF	Battery voltage
      	2
      E120 (B)	22

      Is there voltage on all pins? 

      YES: GO TO 3

      NO: Repair or replace harness.

      Fig 1: Checking Voltage Between IPDM E/R Harness Connectors And Ground

      
3. CHECK GROUND CIRCUIT
   1. Turn ignition switch OFF.
   2. Check continuity between IPDM E/R harness connectors and ground.
      CONTINUITY REFERENCE CHART
      
      

      IPDM E/R		Ground	Continuity
      Connector	Terminal
      E122 (A)	38		Yes
      E124 (B)	59

      Does continuity exist? 

      YES: Inspection End.

      NO: Repair or replace harness.

      Fig 2: Checking Continuity Between IPDM E/R Harness Connectors And Ground