Mechanics

SUZUKI ESTEEM TERMINAL PROBLEM

2000 Suzuki Esteem

Suzuki Esteem terminal problem how do I fix p0743
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Madatyou
October 16, 2012.



DTC P0743: TCC SOLENOID CIRCUIT FAULT

Condition

DTC P0743 will set if voltage at TCM harness connector E26 terminal No. 12
(Blue/White wire) is high while TCC solenoid is commanded off, or low while
commanded on.

Diagnostic Procedure

1. Turn ignition off. Disconnect TCM harness connectors. Turn ignition on. Using a DVOM, measure voltage between ground and TCM harness connector E26 terminal No. 12 (Blue/White wire). If reading is about zero volts, go to next step. If reading is not as specified, repair Blue/White wire for a short to power.

2. Turn ignition off. Using a DVOM, measure resistance between ground and TCM harness connector E26 terminal No. 12 (Blue/White wire). If resistance is 11-15 ohms at 68°F (20°C), check for an intermittent problem or faulty TCM. See DIAGNOSTIC AIDS. If resistance is not as specified, go to next
step.

3. Disconnect solenoid harness connector at transaxle. Using a DVOM,
measure resistance between transaxle case and TCC solenoid harness connector terminal No. 3 (Blue/White wire). See Fig. 4. If resistance is 11-15 ohms at 68°F (20°C), repair Blue/White wire for an open or short to ground. If resistance is not as specified, go to next step.

4. Check TCC solenoid wires in transaxle for an open or short. Check TCC
solenoid for proper installation. Repair as necessary. If no problems are found, replace TCC solenoid. Retest system.

Diagnostic Aids

An intermittent condition may be caused by a poor connection, damaged wire
insulation or a wire which is broken inside the insulation. Inspect TCM harness connectors for damaged, corroded or backed-out terminal pins. Repair as necessary and retest system.


KHLow2008
Oct 16, 2012.