P0732

Diagnostic Chart:

Wiring Diagram:

During normal driving modes the PCM/TCM adapts line pressure to prevent clutch slip and harsh shifts. If 2nd clutch is slipping after pressure is adapted to high line, it is determined that 2nd gear is not available. Second gear clutch is applied by opening circuit 1222 at the PCM.

DTC PARAMETERS

DTC P0732 may be set while driving in 2nd (steady state) or during an up or downshift to 2nd, and when the PCM has detected the following conditions twice per ignition cycle.

- Vehicle speed is above 5 km/h (3 mph).

- Turbine shaft speed greater than 224 rpm.

- No turbine shaft or vehicle speed, or noise DTCs.

- High line pressure has been commanded.

- Ratio failure counter is equal to 255 steady state (counter range is 0-255) or shift counter is greater than 100 on a downshift or upshift.

TEST DESCRIPTION

Numbered steps below refer to numbered steps on chart.

1. Check for DTCs P0745, P0708, P0705, P0706, P0768, P0756, P0758, P0761, P0763, P0782, P0766, P0768, P0783, P0740, P0749, P0744, P0759, P0764, or P0769. They must be eliminated first as a possible cause of DTC P0732.

2. Check actuator operation. Use actuator quick check. Listen and compare noise of 2nd gear actuator to that of other actuators. The noise of all should be similar. Actuator Quick Chart

NOTE: To check actuator operation, command actuator quick test using Scan tool.

3. Check pressure regulator valve operation. Make sure pressure increases in correct increments during pressure test. If pressure is low, repair for pressure condition first.

4. Apply compressed air with rubber nozzle on air gun. This step will determine if there is an internal problem.

5. If there is a cross leak to another clutch, there may also be another code set indicating a gear stuck on. This may help pinpoint the source of the leak. If a leak is detected to lube circuit, check input nut torque.

6. As pressure is applied and released, the clutch plates should also apply and release. Observe oil holes in clutch housing. If oil has darkened and contains clutch plate material, the clutches have probably failed.

REPAIR VERIFICATION

Momtor DTC menu "Code Status" for "Pass Since Code Clear" and "Pass This Ignition Cycle." When both have passed, repair is verified.

Criteria for pass:

- Steady state in 2nd gear with no slip for 0.4 seconds and with engine torque greater than 30 counts for 0.1 seconds.

DIAGNOSTIC AIDS

- When the PCM detects a fault in the circuit (open, ground, short), the PCM will open the circuit internally to protect the circuit.

- Could be a hot or cold only condition. If condition is intermittent try to reproduce conditions in MALF table to reset the DTC.

- If a DTC indicating 3rd or 4th gear is stuck on DTC P0732 will also set. Repair the higher gear DTC first.

- Possible wrong case or Fwd/Rev servo piston installed causing limited travel.