Test 5: Powertrain Control Module (Pcm) Does Not Respond To NGS Tester
WARNING: This page is about a different car, the 2000 Mazda B4000, 2000 Mazda B3000, and 2000 Mazda B2500. However, it is still accessible from the selected car via links, so may be relevant.
- Measure resistance of Tan/Orange wire between PCM harness connector terminal No. 16 and DLC terminal No. 2. See Figure and Figure . Measure resistance of Pink/Light Blue wire between PCM harness connector terminal No. 15 and DLC terminal No. 10. If resistance in either wire is greater than 5 ohms, go to next step. If resistance in both wires is 5 ohms or less, go to TEST O: UNABLE TO ENTER SELF-TEST under SYSTEM TESTS in CRUISE CONTROL SYSTEMS - PICKUP article.
- Disconnect and inspect both halves of in-line harness connector (X-136), located at left rear of engine compartment. See Fig 1 through Fig 3 . Inspect connector for damage, bent terminals or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between female half of in-line harness connector terminal No. 21 and DLC terminal No. 2. See Figure and Figure . Measure resistance of Pink/Light Blue wire between female half of in-line harness connector terminal No. 25 and DLC terminal No. 10. If resistance in both wires is 5 ohms or less, go to next step. If resistance in either wire is greater than 5 ohms, repair wire(s) between DLC and in-line harness connector X-136. Retest system for normal operation.
- Disconnect and inspect both halves of in-line harness connector (X-124). See Fig 1 through Fig 3 . Inspect connector for damage, bent terminals, or corrosion. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
- Measure resistance of Tan/Orange wire between male half of in-line harness connector X-136 terminal No. 21 and male half of in-line harness connector X-124 terminal No. 11. See Figure and Figure
. Measure resistance of Pink/Light Blue wire between male half of in-line harness connector X-136 terminal No. 25 and male half of in-line harness connector X-124 terminal No. 3.
If resistance in both wires is 5 ohms or less, repair wire(s) between female half of in-line harness connector X-124 and PCM harness connector. If resistance in either wire is greater than 5 ohms, repair wire(s) between male half of in-line harness connector X-124 and male half of in-line harness connector X-136. Retest system for normal operation.