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Shift Solenoids

DIAGNOSTIC PROCEDURE - SHIFT SOLENOIDS

4 SHIFT SOLENOIDS AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID
STEP INSPECTION ACTION
1 ELECTRONIC DIAGNOSTICS
  • Key OFF.
  • Make sure the transaxle vehicle harness connector is fully seated, terminals are fully engaged in connector and in good condition before proceeding.
  • Connect the diagnostic tool.
  • Key ON, Engine OFF (KOEO).
  • Carry out KOEO Test until continuous DTCs have been displayed.
  • Enter Output Test Mode (OTM). See OUTPUT STATE CONTROL (OSC) MODE  .
  • Select the mode ALL ON. Push START to turn outputs on. Push STOP to turn outputs off.
  • Does the vehicle enter OTM? 
 Yes REMAIN in OTM. Go to next step.
No PRESS START. If vehicle does not enter OTM, see DIAGNOSTIC TROUBLE CODE (DTC) CHART - B, C AND U CODES .
2 CHECK ELECTRICAL SIGNAL OPERATION
  • Key OFF.
  • Disconnect the Transaxle Hardware Unit 0140-227.
  • Use a mirror to inspect both ends of the transaxle connector for damaged or pushed out pins, corrosion, loose wires, and missing or damaged seals.
  • Key ON, Engine OFF (KOEO).
  • Measure the voltage between:
    • transmission hardware unit 0140-227 pin 5 (W/Y) and
    • transmission hardware unit 0140-227 pin 4 (V/Y) and
    • 0140-227 pin 6 (W/R)
    at the transaxle vehicle harness connector.
  • While observing the VOM, press START and STOP to cycle the solenoid output on and off.
  • Does the suspected solenoid output voltage change at least 0.5 volt? 
 Yes Go to step 5.
No Go to next step.
3 CHECK CONTINUITY OF SOLENOID SIGNAL AND VPWR HARNESS CIRCUITS
  • Key OFF.
  • Disconnect the PCM 0140-175t/275t.
  • Disconnect the PCM 0140-175b/275b.
  • Disconnect the Transaxle Connector 0140-227.
  • Inspect for damaged or pushed out pins, corrosion or loose wires.
  • Measure the resistance between PCM 0140-175t/275t pin 43 (W/Y) and transmission hardware unit 0410-227 pin 5 (W/Y).
  • Measure the resistance between PCM 0140-175t/275t pin 42 (O/B) and the transmission hardware unit 0140-227 pin 7 (O/B).
  • Measure the resistance between PCM 0140-175b/275b pin 35 (W/R) and PCM 0140-175b/275b pin 36 (W/R) and transmission hardware unit 0140-227 pin 6 (W/R).
  • Is each resistance less than 5 ohms? 
 Yes Go to next step.
No REPAIR open circuit(s). RECONNECT all components. RERUN Quick Test.
4 CHECK SOLENOID HARNESS FOR SHORT TO POWER AND GROUND
  • Measure the resistance between:
    • PCM 0140-175t/275t pin 43 (W/Y) and
    • PCM 0140-175b/275b pin 35 (W/R) and
    • PCM 0140-175b/275b pin 36 (W/R)
  • Measure the resistance between:
    • PCM 0140-175t/275t pin 42 (O/B) and
    • PCM 0140-175b/275b pin 35 (W/R) and
    • PCM 0140-175b/275b pin 36 (W/R)
  • Measure the resistance between:
    • PCM 0140-175t/275t pin 43 (W/Y), and
    • PCM 0140-175t/275t pin 41 (GY/R), and
    • PCM 0140-175b/275b pin 47 (B), and
    • PCM 0140-175b/275b pin 48 (B), and
    • PCM 0140-175b/275b pin 49 (B) and chassis ground.
  • Measure the resistance between:
    • PCM 0140-175t/275t pin 42 (O/B), and
    • PCM 0140-175t/275t pin 41 (GY/R), and
    • PCM 0140-175b/275b pin 47 (B), and
    • PCM 0140-175b/275b pin 48 (B), and
    • PCM 0140-175b/275b pin 49 (B) and chassis ground
  • Is each resistance greater than 10,000 ohms? 
 Yes Go to next step.
No REPAIR short circuit(s). RECONNECT all components. RERUN Quick Test.
5 TRANSAXLE FUNCTIONAL TEST
CAUTION:
  • Do not pry on the connector. This will damage the connector and can result in a transaxle concern. Press button and pull up on the transaxle vehicle harness connector.
NOTE:
  • LED will turn GREEN when solenoid activates and turn OFF when deactivated. LED will turn RED if an activated solenoid/harness is shorted to B+. LED will remain OFF if an activated solenoid/harness is shorted to ground or no continuity (open circuit).

  • Disconnect the Transaxle Harness.
  • Reconnect the Transmission Tester.
  • Carry out the Solenoid Function Tests as outlined in the Transmission Tester Manual.
  • Do the solenoids (LED) activate (LED green)? 
 Yes Go to next step.
No Go to step 7.
6 TRANSAXLE DRIVE CYCLE TEST
  • Reconnect the PCM.
  • Carry out the Dynamic Testing - Engine On as outlined in the Transmission Tester Manual.
  • Does the vehicle upshift when commanded by the tester? 
 Yes INSTALL a new PCM. See POWERTRAIN CONTROL MODULE (PCM) . RECONNECT all components. RERUN On-Board Diagnostics Tests. If symptoms are still present, see DIAGNOSIS BY SYMPTOM .
No Go to next step.
7 CHECK RESISTANCE OF SOLENOID/HARNESS
  • Place the Bench/Drive switch in BENCH mode.
  • Rotate solenoid select switch to OHMS CHECK position.
  • Measure the resistance between SS-1 jack and VPWR jack on tester.
  • Measure the resistance between SS-2 jack and VPWR jack on tester.
  • Is the resistance for both solenoids between 12 and 22 ohms? 
 Yes Go to next step.
No INSTALL a new solenoid body assembly. RECORD and CLEAR the DTCs. RERUN On-Board Diagnostics tests.
8 CHECK SOLENOID/HARNESS FOR SHORT TO GROUND
  • Measure the resistance of each solenoid between BAT (-) jack (engine ground) and each appropriate jack.
  • Is the resistance greater than 10,000 ohms (no continuity)? 
 Yes See DIAGNOSIS BY SYMPTOM .
No INSTALL a new solenoid body assembly. RECORD and CLEAR the DTCs. RERUN On-Board Diagnostics tests.
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