Test P - Power Steering Pressure Switch (PSPS)
- Code 52 Displayed. Turn key OFF and wait 10 seconds. Disconnect PSPS. Jump PSPS circuit to signal return at harness. Repeat KEY ON/ENGINE OFF (KOEO) SELF-TEST PROCEDURE . If code 52 is not displayed, replace PSPS and repeat QUICK TEST. If code 52 is still displayed, go to next step.
- Turn key OFF and wait 10 seconds. Disconnect PSPS and 60-pin ECA connector. Inspect for and repair any damaged wiring. Install breakout box, set DVOM to 200 ohm scale, and leave ECA disconnected. Measure resistance between test pin 46 and signal return at PSPS connector. Also measure resistance between test pin 3 (test pin 24 on 2.3L HSC/CFI models) and PSPS circuit at PSPS connector. If both readings are less than 5 ohms, replace ECA. Repeat QUICK TEST. If both readings are not less than 5 ohms, repair open in circuit. Repeat QUICK TEST.
- Connect tachometer and start engine, allowing it to idle in Park or Neutral. Disconnect PSPS at switch. If RPM increase, replace PSPS. If RPM do not increase, go to next step.
- Turn key OFF and wait 10 seconds. Disconnect 60-pin ECA connector. Inspect for and repair any damaged wiring. Install breakout box, leaving PSPS and ECA disconnected. Set DVOM to 200 ohm scale. Measure resistance between test pin 3 (test pin 24 on 2.3L HSC/CFI models) and test pin 46. If reading is less than 5 ohms, repair short in harness. If reading is not less than 5 ohms, replace ECA.