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 following terminals and connector for damage, bend and loose connection (control module-side and harness-side).
- IPDM E/R.
- Harness connector E130.
- Harness connector E27.
- Harness connector E28.
- Harness connector M7.
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. 108-132&ohm;
OK or NG
1. OK: Replace IPDM E/R. Refer to "REMOVAL AND INSTALLATION OF IPDM E/R ".
2. NG: Repair harness between data link connector 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.