Amigo/Rodeo 3.2L & Trooper

NOTE: Perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm impedance, unless stated otherwise in test procedure.

Turn ignition on with engine off. Verify Malfunction Indicator Light (MIL) is on. If MIL is on, go to next step. If MIL is not on, go to MALFUNCTION INDICATOR LIGHT (MIL) INOPERATIVE in SELF-DIAGNOSTICS - 3.2L & 3.5L article.
Verify REDUCED POWER LAMP (RPL) is on. If RPL is on, go to next step. If RPL is not on, go to REDUCED POWER LAMP (RPL) INOPERATIVE in SELF-DIAGNOSTICS - 3.2L & 3.5L article.
Turn ignition off. Install TECH II scan tool. Follow manufacturer`s instructions for scan tool operation. Turn ignition on. If scan tool displays PCM data, go to next step. If scan tool does not display PCM data, verify scan tool is properly installed. If scan tool is properly installed, go to step 12.
Using scan tool, command MIL (CHECK ENGINE lamp) OFF. If MIL turns off, go to next step. If MIL does not turn off, go to MIL ON STEADY in SELF-DIAGNOSTICS - 3.2L & 3.5L article.
Using scan tool, command MIL (REDUCED POWER LAMP) OFF. If MIL(RPL) turns off, go to next step. If MIL(RPL) does not turn off, go to REDUCED POWER LAMP ON STEADY in SELF-DIAGNOSTICS - 3.2L & 3.5L article.
Using scan tool, check if any DTCs have been set. If any DTCs are set, go to next step. If no DTCs are set, go to step 11.
Check to see if any of the following DTCs are stored: P0562, P0563, P0601, P0602, P0604, P0606, P1625, P1635, P1639, P1640 or P1650. If any of the listed DTCs are present, go to appropriate diagnostic test procedure under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 3.2L & 3.5L article. If none of the listed DTCs are present, go to next step.
Check to see if any of the following DTCs are stored: P1514, P1515, P1516, P1523, P1125, P1290, P1295 or P2299. If any of the listed DTCs are present, go to appropriate diagnostic test procedure under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - 3.2L & 3.5L article. If none of the listed DTCs are present, go to next step.
Check to see if two or more of the following DTCs are present: P0106, P0107, P0336, P0337, P0341, P0342, P0401, P0404, P0405, P0425, P1107, P1120, P1220, P1221, P1271, P1272, P1273, P1275, P1280, P1285, P1515, P1516, P1635, P1639 or P1646. If two or more of the listed DTCs are present, go to MULTIPLE PCM INFORMATION SENSOR DTCS SET under SELF-DIAGNOSTIC SYSTEM in SELF-DIAGNOSTICS - 3.2L & 3.5L. If two or more of the listed DTCs are not present, go to next step.
Start engine. If engine starts and continues to run, go back to step 6. If engine will not run, go to ENGINE CRANKS BUT WILL NOT RUN under NO START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES article.
Compare PCM data values displayed to typical engine scan data values. If values displayed are normal or close to typical values, OBD-II system check is complete. If driveability problem still exists, go to TROUBLE SHOOTING - NO CODES article. If values are not correct, go to SYSTEM & COMPONENT TESTING article.
Turn ignition off. Disconnect PCM connectors. Turn ignition on with engine off. Check for open or short in class 2 data circuit between Data Link Connector (DLC) terminal No. 2 and PCM Blue 80-pin connector terminal F58 (Orange/Black wire on Rodeo, Orange/Green wire on Trooper). See WIRING DIAGRAMS article. Also check for open or short in ignition feed circuit between DLC terminal No. 16 and dash fuse box. Also check for open in ground circuit (Black/Blue wire) to DLC terminal No. 4. If any problems were found, repair as necessary and return to step 2. If no problems were found, go to next step.
Attempt to reprogram EEPROM. See PROGRAMMING in appropriate SELF-DIAGNOSTICS - 3.2L & 3.5L article. Attempt to display PCM data on scan tool. If data is now displayed, return to step 2. If data is not displayed, go to next step.
Replace and reprogram PCM. See PROGRAMMING in SELF-DIAGNOSTICS - 3.2L & 3.5L article. After repair, recheck system operation.