Check IPDM E/R Operation

WARNING: This page is about a different car, the 2005 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IPDM E/R INPUT VOLTAGE
Check voltage between IPDM E/R connector E9 terminal 51 and ground.

51 (G/B) - Ground: Battery voltage

Fig 1: Checking Voltage Between IPDM E/R Connector E9 Terminal 51 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: Replace IPDM E/R.
2. NG: GO TO 2.
CHECK IPDM E/R HARNESS
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R connector E9 terminal 51 and horn relay connector E20 terminal 1.
  51 (G/B) - 1 (G/B): Continuity should exist.
  
  Fig 2: Checking Continuity Between IPDM E/R Connector E9 Terminal 51 And Horn Relay Connector E20 Terminal 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: Check the condition of the harness and the connector.
2. NG: Repair or replace harness.