IPDM E/R Circuit Check

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check the terminals and connector of IPDM E/R for damage, bent or loose connection (control module-side and harness-side).
OK or NG
1. OK: GO TO 2.
2. NG: Repair terminal or connector.
CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector E121 terminals 48 (L) and 49 (Y).
  48 (L) - 49 (Y) : Approx. 108-132Ω
OK or NG
1. OK: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
2. NG: Repair harness between harness connector E130 and IPDM E/R.
Fig 1: Checking Resistance Between IPDM E/R Harness Connector E121 Terminals 48 (L) And 49 (Y)
Courtesy of NISSAN MOTOR CO., U.S.A.