ECM Circuit Inspection

WARNING: This page is about a different car, the 2006 Nissan Xterra. 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 battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side and harness side).
  - M/T model
  - ECM connector
  - Harness connector E152
  - Harness connector M31
  - A/T model
  - ECM connector
  - Harness connector E2
  - Harness connector F32
OK or NG

OK >> GO TO 2.

NG >> Repair terminal or connector.

CHECK HARNESS FOR OPEN CIRCUIT

Disconnect ECM connector.

Check resistance between ECM harness connector terminals.

RESISTANCE CHART

ECM connector	Terminal		Resistance (Approx.)
E16	94	86	108 - 132 ohm

Fig 1: Identifying Resistance Between ECM Harness Connector Terminals

OK or NG

OK >> Replace ECM.

NG >>

M/T model
- Repair harness between ECM and data link connector.
A/T model
- Repair harness between ECM and A/T assembly.