LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Suzuki >> 2000 >> Esteem GL, 4D Sedan, 1.8 4, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - 4-Speed >> Diagnostic Tests >> DTC P1700: TP Sensor Signal Input Malfunction >> Diagnostic Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure

  1. Check for engine performance-related DTCs. See RETRIEVING DIAGNOSTIC TROUBLE CODES under DIAGNOSIS & TESTING. If DTC P0122 or P0123 is present, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Repair as necessary. If specified DTC are not present, go to next step.
  2. Turn ignition on. Using a DVOM, check duty cycle (voltage on-time) between ground and TCM harness connector E25 terminal No. 6 (Orange wire). If reading is 8-13 volts at closed throttle, and 4-8 volts at Wide Open Throttle (WOT), check for an intermittent problem or faulty TCM. See DIAGNOSTIC AIDS  . If reading is not as specified, go to next step.
  3. Turn ignition off. Disconnect ECM harness connectors. Turn ignition on. Using a DVOM, measure voltage between ground and ECM harness connector E92 terminal No. 1 (1.8L) or connector C21 terminal No. 6 (1.6L). See Figure . If reading is 10-14 volts, check for an open in ECM power or ground circuits. See TCM CIRCUIT CHECK  under COMPONENT TESTS. Repair as necessary. If no problems are found, substitute ECM with a known-good unit. If reading is not as specified, go to next step.
  4. Turn ignition off. Disconnect ECM harness connectors. Turn ignition on. Using a DVOM, measure voltage between ground and ECM harness connector E92 terminal No. 1 (1.8L) or connector C21 terminal No. 6 (1.6L). If reading is 10-14 volts, check ECM power and ground circuit. See ECM CIRCUIT CHECK  under COMPONENT TESTS. If power and ground circuits are okay, replace ECM and retest. If reading is not 10-14 volts, check Orange wire from ECM to TCM for an open or short to ground. Check for short in cruise control module (if equipped). Repair as necessary. If no problems are found, substitute TCM with a known-good unit. Retest system.
scientia non olet · About LEMON Manuals