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Diagnosis - s4xa Acura Integra III

Automatic Trans 21 illustrations ~8965 words

APPLICATION

VehicleTransaxle Model
IntegraS4XA

TRANSAXLE APPLICATION

CAUTIONVehicle is equipped with a Supplemental Restraint System (SRS). When servicing vehicle, use care to avoid accidental air bag deployment. All SRS electrical connections and wiring harness are covered with Yellow insulation. SRS-related components are located in steering column, center console, instrument panel and lower panel on instrument panel. DO NOT use electrical test equipment on these circuits. It may be necessary to deactivate SRS before servicing components. See AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION.

Note. Obtain radio anti-theft code from customer before disconnecting negative battery cable. Radio anti-theft code must be re-entered into radio once negative battery cable is reconnected. To re-enter radio anti-theft code, turn ignition and radio on. When CODE is displayed on radio, re-enter radio anti-theft code by using the radio station preset buttons.

DESCRIPTION

Automatic transaxle is electronically controlled. Transaxle shifting and torque converter lock-up are controlled by Transmission Control Module (TCM). TCM is located behind left kick panel. TCM receives information from various input devices and uses this information to control shift and lock-up control solenoid valves.

The TCM contains a grade logic control system which controls transaxle shifting while vehicle is ascending or descending a slope or reducing vehicle speed. Transaxle is equipped with shift and key interlock systems. Shift interlock system prevents shift lever from being moved from Park unless brake pedal is depressed and accelerator pedal is in idle position. In case of a malfunction, shift lever can be released by placing ignition key in key release slot near shift lever. Key interlock system prevents ignition key from being removed from ignition lock assembly unless shift lever is in Park. For additional information, see ACURA/HONDA SHIFT INTERLOCK SYSTEMS article.

The A/T gear position indicator lights on instrument panel are controlled by A/T gear position switch on gear shift lever.

A/T GEAR POSITION INDICATOR

With ignition in RUN or START position, voltage is supplied to A/T gear position indicator, located on instrument panel. (Scheme 1) When shift lever is moved to designated gear position, A/T gear position switch completes the ground circuit for A/T gear position indicator on instrument panel. The light on A/T gear position indicator will be illuminated to indicate the shift lever gear position. The A/T gear position switch is located on right side of shift lever. (Scheme 3)

GRADE LOGIC CONTROL SYSTEM

The TCM compares actual driving conditions with driving conditions memorized in the TCM, based on inputs from the Vehicle Speed Sensor (VSS), Throttle Position (TP) sensor, Engine Coolant Temperature (ECT) sensor, Barometric Pressure (BARO) sensor, brakelight switch signal and A/T gear position switch. The TCM uses these input signals to control shifting while vehicle is ascending or descending a slope or during deceleration.

When TCM determines vehicle is ascending a slope with shift lever in "D4" position, TCM extends engagement of 3rd gear to prevent transaxle from frequently shifting between 3rd and 4th gears. Shift points between 3rd and 4th gear are stored in TCM which allows the most suitable gear selection depending on conditions.

When TCM determines vehicle is descending a slope with shift lever in "D4" position, TCM changes upshift speed from 3rd to 4th gear when throttle is fully closed. This widens the 3rd gear operating range from that programmed for level surface operation and in conjunction with engine braking from torque converter lock-up, provides smooth vehicle operation. When vehicle is decelerating on a gradual hill in 4th gear, or when applying brakes on a steep hill, the transaxle will downshift to 3rd gear. When vehicle accelerates, transaxle will upshift into 4th gear.

When vehicle decelerates from speeds greater than 30 MPH, TCM shifts transaxle from 4th gear to 2nd gear earlier than normal to reduce the number of times the transaxle shifts, allowing smoother acceleration and vehicle operation.

Scheme 1

Scheme 1: GRADE LOGIC CONTROL SYSTEM
Scheme 1: GRADE LOGIC CONTROL SYSTEM

TRANSMISSION CONTROL MODULE

The Transmission Control Module (TCM) receives information from various input devices and uses this information to control shift and lock-up control solenoid valves. (Scheme 2) The TCM contains self-diagnostic system which stores fault code if failure or problem exists in transaxle electronic control system. Fault code may also be referred to as Diagnostic Trouble Code (DTC) or flash code. DTC or flash code may be retrieved to determine transaxle problem area. See SELF-DIAGNOSTIC SYSTEM. The TCM is located behind left kick panel. (Scheme 3)

Air Conditioning Signal

The A/C clutch relay delivers input signal to TCM, indicating A/C operation. The A/C clutch relay is located at front corner of engine compartment, near radiator. (Scheme 4)

Barometric Pressure Signal

Barometric pressure signal is delivered between Engine Control Module (ECM) and the TCM. The ECM contains a built-in barometric pressure sensor to determine atmospheric pressure. The ECM is located behind right kick panel.

Brakelight Switch Signal

Brakelight switch delivers input signal to TCM, indicating vehicle braking. Brakelight switch is located on brake pedal support bracket. (Scheme 3)

Engine Coolant Temperature (ECT) Signal

Engine Coolant Temperature (ECT) sensor delivers input signal to TCM, indicating engine coolant temperature. The ECT sensor is located on cylinder head, below distributor. (Scheme 4)

Engine Speed

Engine speed signal (RPM) is delivered to TCM from ignition control module in distributor assembly.

Engine Control Module (ECM)

An upshift and downshift signal and a shift acknowledgment signal is delivered between the ECM and TCM. A 5-volt reference signal exists between ECM and TCM. ECM is located behind right kick panel.

Mainshaft & Countershaft Speed Signal

Mainshaft speed signal is delivered to TCM. Mainshaft speed sensor is located on top of transaxle. (Scheme 4) Countershaft speed signal is delivered to TCM. Countershaft speed sensor is located on top of transaxle.

Service Check Connector

Service check connector is used to retrieve flash codes for transaxle electronic control system diagnosis. When jumper wire is installed between service check connector terminals, an input is delivered to TCM to display flash codes on "D4" indicator light. Service check connector is a Blue 2-pin connector located behind right side of dash, below glove compartment. (Scheme 5)

Shift Position Signal

Shift position signal is delivered to TCM by the A/T gear position switch, located on right side of shift lever. (Scheme 3)

Throttle Position (TP) Sensor Signal

Throttle Position (TP) sensor delivers input signal to TCM to indicate throttle position. The TP sensor is mounted on throttle body. (Scheme 4)

Vehicle Speed Sensor Signal

Vehicle Speed Sensor (VSS) delivers input signal to TCM to indicate vehicle speed. The VSS is located on top of transaxle. (Scheme 4)

Scheme 2

Scheme 2: Vehicle Speed Sensor Signal
Scheme 2: Vehicle Speed Sensor Signal

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4
Scheme 4

Shift Control Solenoid Valves

The TCM controls transaxle shifting by delivering an output signal to shift control solenoid valves "A" and "B" on shift control solenoid valve assembly. Solenoid valves are operated in accordance with gear position. See SHIFT CONTROL SOLENOID VALVE OPERATION table. Shift control solenoid valve assembly is located on transaxle. (Scheme 4) Shift control solenoid valve "A" has a Blue/Yellow wire and solenoid valve "B" has a Green/White wire.

Shift Lever PositionSolenoid Valve "A"Solenoid Valve "B"
"D" Or "D4" (1st Gear)OffOn
"D" Or "D4" (2nd Gear)OnOn
"D" Or "D4" (3rd Gear)OnOff
"D4" (4th)OffOff
"2" (2nd Gear)OnOn
"1" (1st Gear)OnOff
"R" (Reverse)OnOff

SHIFT CONTROL SOLENOID VALVE OPERATION

Lock-Up Control Solenoid Valves

The TCM controls torque converter lock-up by delivering an output signal to lock-up control solenoid valves "A" and "B" on lock-up control solenoid valve assembly. Lock-up control solenoid valves are activated in accordance with lock-up condition. See LOCK-UP CONTROL SOLENOID VALVE OPERATION table. Lock-up control solenoid valve assembly is located on transaxle. (Scheme 4) Lock-up control solenoid valve "A" has a Yellow wire and solenoid valve "B" has a Green/Black wire.

Lock-Up ConditionSolenoid Valve "A"Solenoid Valve "B"
No Lock-UpOffOff
Slight Lock-UpOnOff
Half Lock-UpOnOn
Full Lock-UpOnOn
Lock-Up During DecelerationOn(1)
(1) Solenoid valve will cycle on and off.
(1)Solenoid valve will cycle on and off.

LOCK-UP CONTROL SOLENOID VALVE OPERATION

"D4" Indicator Light

The "D4" indicator light is located on A/T gear position indicator on instrument panel. (Scheme 1) When ignition is first turned on, "D4" indicator light should come on for about 2 seconds and then go off, indicating light circuit is functioning properly. If a fault exists in transaxle electronic control system and fault code is stored, TCM delivers an output signal to blink "D4" indicator light.

Interlock Control Unit

When A/T gear position switch is in Park, the TCM provides voltage to shift lock circuit in the interlock control unit, provided brake pedal is depressed and accelerator pedal is in idle position. Interlock control unit then operates shift lock solenoid by controlling the ground circuit. When shift lock solenoid is energized, shift lever is released and can be moved.

Self-Diagnosis Indicator

If a fault exists in transaxle electronic control system and DTC is stored, TCM will deliver an output signal (flash code) to turn on and blink the "D4" indicator light. The "D4" indicator light is located on the A/T gear position indicator on instrument panel. (Scheme 1) Flash code can be retrieved to identify problem area by installing jumper wire between service check connector terminals. DTC "P" code can be retrieved to identify problem area using scan tool. Flash codes will be displayed by blinking "D4" light.

A/C SIGNAL

Note. If no A/C signal exists, torque converter lock-up clutch may not engage or cycle on and off.

  1. Start engine. Turn blower and A/C switch to ON position. Check if A/C compressor clutch engages.
  2. If A/C compressor clutch does not engage, check A/C compressor clutch and wiring. If A/C compressor clutch engages, turn engine off. Disconnect TCM 26-pin harness connector, located behind left kick panel. (Scheme 3)
  3. Connect voltmeter between terminal A24 (Black/Red wire) and terminal A13 (Brown/Black wire) or A26 (Brown/Black wire). Start engine. Note voltage with A/C compressor off.
  4. If battery voltage does not exist, go to next step. If battery voltage exists, A/C signal is okay. Check for loose TCM connections. If electrical connections are okay, replace with a known-good TCM and recheck system.
  5. If battery voltage does not exist, check for open circuit in Black/Red wire between terminal A24 on 26-pin harness connector and A/C clutch relay. A/C clutch relay is located at front corner of engine compartment, near radiator. (Scheme 4)

BRAKELIGHT SIGNAL

Note. If no brakelight signal exists, transaxle may fail to shift from Park with brake pedal depressed and accelerator pedal in idle position.

  1. Ensure brakelights turns on when brake pedal is depressed. If brakelights turns on, go to next step. If brakelights does not turn on, check fuse No. 42 (20-amp) in engine compartment fuse/relay box, located at right rear corner of engine compartment. If fuse is okay, repair brakelight signal circuit.
  2. Ensure ignition is off. Disconnect TCM 26-pin and 22-pin harness connectors, located behind left kick panel. (Scheme 3)
  3. Using a DVOM, check voltage between terminals B12 and A13 or A26 with brake pedal depressed. If battery voltage exists, brakelight signal to TCM is okay. Check for loose TCM electrical connections. If electrical connections are okay, replace with a known good TCM and recheck operation.
  4. If battery voltage does not exist, check for open circuit in the Green/White wire between terminal B12 and brakelight switch. Brakelight switch is located on brake pedal support. (Scheme 3)

SYSTEM DIAGNOSIS

TCM monitors transaxle operation. TCM contains a self-diagnostic system which stores a DTC if a transaxle electronic control system failure or problem exists. If DTC is stored, TCM will turn on and blink "D4" light. (Scheme 1) If a transaxle electronic control system failure or problem is suspected and "D4" light on A/T gear position indicator does not flash, see "D4" INDICATOR LIGHT CIRCUIT CHECK under DIAGNOSTIC TESTS. DTC can be retrieved using scan tool connected to Data Link Connector (DLC) located behind center console, behind ashtray. Flash code may also be retrieved for diagnosing transaxle electronic control system.

RETRIEVING FAULT CODES

Note. During diagnostics, ensure "D4" indicator light on A/T gear position indicator on instrument panel is not turned on by a fault in the PGM-FI system. The PGM-FI system controls the fuel injection system. To repair PGM-FI system, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. After PGM-FI system has been repaired, clear fault codes. See CLEARING FAULT CODES . After fault codes have been cleared, road test vehicle for several minutes at speeds greater than 30 MPH and recheck fault codes.

Note. Before performing any diagnostic procedure, obtain radio anti-theft code from customer. Note radio preset stations, as radio stations and clock setting will be cleared. Radio anti-theft code must be re-entered for radio operation.

Retrieving DTC Using Scan Tool

  1. If DTC exists, "D4" light on A/T gear position on instrument panel will blink when ignition is turned on and DTC P0770 will be stored in PCM. To retrieve DTC using scan tool, turn ignition off. Connect scan tool to DLC (located behind ashtray). Turn ignition on. Scan tool will indicate DTC. Follow scan tool manufactures instructions.
  2. Once DTC is obtained, turn ignition off. Determine probable cause and symptom. See «DTC/FLASH CODE IDENTIFICATION»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) table. If any other DTC except those listed are displayed, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. For trouble shooting of DTC, see «DIAGNOSTIC TESTS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__diagnostic-tests) . If "D4" light does not flash or stays on, see «"D4" INDICATOR LIGHT CIRCUIT CHECK»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under DIAGNOSTIC TESTS.

Retrieving Flash Codes Using "D4" Light

  1. If flash code exists, "D4" light on A/T gear position indicator on instrument panel will blink when ignition is turned on. To retrieve flash code, turn ignition off. Install jumper wire between service check connector terminals. The Blue service check connector is located under right side of dash. (Scheme 5)
  2. Turn ignition on. Flash codes will be displayed by short and long blinks of "D4" indicator light on A/T gear position indicator on instrument panel. If the Malfunction Indicator Light (MIL) is also flashing, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. Repair MIL light codes first.
  3. A short blink indicates a single digit flash code. A long blink equals 10 short blinks. For example, if "D4" light blinks once, this is a flash code No. 1. If "D4" light blinks one long blink and then 4 short blinks, this is a flash code No. 14. (Scheme 6)
  4. Once flash code is obtained, turn ignition off. Remove jumper wire from service check connector. Determine probable cause and symptom. See «DTC/FLASH CODE IDENTIFICATION»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) table. If any other flash codes except those listed are displayed, TCM is defective. For trouble shooting of flash codes, see «DIAGNOSTIC TESTS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__diagnostic-tests). NOTE: If customer describes symptoms for DTC P0715/Flash Code 15, DTC P0725/Flash Code No. 11 DTC or P01706/Flash Code No. 6, it may be necessary to test drive vehicle to recreate the symptom and then check for trouble code with ignition still on.

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6
DTC/Flash Code Number (1)Indicator Light Condition (2)Probable Cause (3)Symptom (4) (5)
P0715/15BlinksDefective Mainshaft Speed SensorTransaxle Jerks Hard When Shifting
P0720/9BlinksDefective Countershaft Speed SensorLock-Up Clutch Does Not Engage
P0725/11OffDefective Ignition CoilLock-Up Clutch Does Not Engage
P0730OffDefective Shift Control SystemFails To Shift, Stuck In 1st Or 4th Gears
P0740OffDefective Lock-Up Control SystemLock-Up Clutch Does Not Engage Or Remains Engaged, Unstable Engine Idle
P0753/7BlinksDefective Shift Control Solenoid "A"Remains In 4th Gear, Fails To Shift Other Than 1st-4th, 2nd-4th, Or 2nd-3rd Gears
P0758/8BlinksDefective Shift Control Solenoid "B"Remains In 1st Or 4th Gear
P1705/5BlinksDefective A/T Gear Position SwitchLock-Up Clutch Does Not Engage, Fails To Shift Other Than 2nd-4th Gears
P1706/6OffDefective A/T Gear Position SwitchLock-Up Clutch Does Not Engage, Lock-Up Clutch Engages & Disengages, Fails To Shift Other Than 2nd-4th Gears
P1753/1BlinksDefective Lock-Up Control Solenoid "A"Lock-Up Clutch Does Not Engage Or Remains Engaged, Unstable Engine Idle
P1758/2BlinksDefective Lock-Up Control Solenoid "B"Lock-Up Clutch Does Not Engage
P1786/14BlinksShorted Or Open FAS Wire (PNK) Between TCM Terminal B19 & ECM, Defective ECMTransaxle Jerks Hard When Shifting
P1790/3BlinksDefective Throttle Position SensorLock-Up Clutch Does Not Engage
P1791/4BlinksDefective Vehicle Speed SensorLock-Up Clutch Does Not Engage
P1792/10BlinksDefective Engine Coolant Temp SensorLock-Up Clutch Does Not Engage
P1794/13BlinksDefective Baro SensorNo Specific Symptoms
(1) This is the number of blinks "D4" indicator light on A/T gear position indicator on instrument panel with jumper wire installed in service check connector. (2) This is operation of "D4" indicator light on A/T gear position indicator on instrument panel. (3) Check specified component for probable cause. Also check wiring and connections for the specified component. (4) If transaxle fails to shift from Park with brake pedal depressed and accelerator pedal in idle position, check brakelight signal. See BRAKELIGHT SIGNAL under TROUBLE SHOOTING. (5) If lock-up clutch does not engage or cycle on and off, check A/C signal. See A/C SIGNAL under TROUBLE SHOOTING.
(1)This is the number of blinks "D4" indicator light on A/T gear position indicator on instrument panel with jumper wire installed in service check connector.
(2)This is operation of "D4" indicator light on A/T gear position indicator on instrument panel.
(3)Check specified component for probable cause. Also check wiring and connections for the specified component.
(4)If transaxle fails to shift from Park with brake pedal depressed and accelerator pedal in idle position, check brakelight signal. See BRAKELIGHT SIGNAL under TROUBLE SHOOTING.
(5)If lock-up clutch does not engage or cycle on and off, check A/C signal. See A/C SIGNAL under TROUBLE SHOOTING.

DTC/FLASH CODE IDENTIFICATION

CLEARING FAULT CODES

Note. TCM memory cannot be cleared using scan tool. The following procedure must be used. Before clearing fault codes, obtain radio anti-theft code from customer. Note radio preset stations, as radio stations and clock setting will be cleared. Radio anti-theft code must be reset for radio operation.

  1. Once repairs have been performed, fault codes must be cleared from TCM memory. Ensure ignition is off. Remove fuse No. 47 (BACK UP, 7.5-amp) from engine compartment fuse/relay box for at least 10 seconds. This will clear TCM memories.
  2. Reinstall fuse. To re-enter radio anti-theft code, turn radio on. When CODE is displayed on radio, re-enter radio anti-theft code by using the radio station preset buttons. Reset clock and radio stations.

DIAGNOSTIC TESTS

Note. Terminal identification, circuit description and terminal voltage is included in PIN VOLTAGE CHARTS. (Scheme 18)and (Scheme 19).

DTC P0715/FLASH CODE 15: MAINSHAFT SPEED SENSOR

Note. DTC P0715/Flash Code 15 doesn't always mean an electrical problem in mainshaft or countershaft speed sensor or circuit, this DTC can also be caused by a mechanical problem in transaxle.

  1. Ensure mainshaft and countershaft speed sensors are installed properly. See «COUNTERSHAFT SPEED SENSOR»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) or «MAINSHAFT SPEED SENSOR»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. Disconnect mainshaft speed sensor harness connector. Check resistance between sensor connector terminals. See «MAINSHAFT SPEED SENSOR»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__mainshaft-speed-sensor) under COMPONENT TESTING.
  2. If resistance is not 400-600 ohms, replace mainshaft speed sensor. If resistance is 400-600 ohms, disconnect TCM 22-pin harness connector "B". Check continuity between ground and TCM 22-pin harness connector "B" terminals No. 10 (Red wire) and No. 17 (White wire). (Scheme 18)and (Scheme 19).
  3. If continuity exists, repair short to ground in Red or White wire between TCM and mainshaft speed sensor. If continuity does not exist, go to next step.
  4. Reconnect mainshaft speed sensor connector. Check resistance between TCM 22-pin harness connector "B" terminals No. 10 (Red wire) and No. 17 (White wire). If resistance is not 400-600 ohms, go to next step. If resistance is 400-600 ohms, perform «DTC P0720/FLASH CODE 9»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__dtc-p0720flash-code-9-countershaft-speed) test, check for loose TCM connectors or replace with a known-good TCM. Recheck system.
  5. Disconnect mainshaft speed sensor harness connector. Check continuity of Red wire between TCM 22-pin harness connector "B" terminal No. 10 and mainshaft speed sensor connector. If continuity exists, go to next step. If continuity does not exist, repair open in Red wire between TCM 22-pin harness connector and mainshaft speed sensor connector.
  6. Check continuity of White wire between TCM 22-pin harness connector "B" terminal No. 17 and mainshaft speed sensor connector. If continuity does not exist, repair open in White wire between TCM 22-pin harness connector and mainshaft speed sensor connector. If continuity exists, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P0720/FLASH CODE 9: COUNTERSHAFT SPEED SENSOR

  1. Ensure countershaft speed sensor is installed properly. See «COUNTERSHAFT SPEED SENSOR»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. Disconnect countershaft speed sensor harness connector. Check resistance between sensor connector terminals. See «COUNTERSHAFT SPEED SENSOR»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__countershaft-speed-sensor) under COMPONENT TESTING. If resistance is not 400-600 ohms, replace countershaft speed sensor. If resistance is 400-600 ohms, go to next step.
  2. Disconnect TCM 22-pin harness connector "B". Check continuity between ground and TCM 22-pin harness connector "B" terminals No. 8 (Green wire) and No. 9 (Blue wire). (Scheme 18)and (Scheme 19).
  3. If continuity exists, repair short to ground in Green or Blue wire between TCM and countershaft speed sensor. If continuity does not exist, reconnect countershaft speed sensor connector. Check resistance between TCM harness connector "B" terminals No. 8 (Green wire) and No. 9 (Blue wire). If resistance is 400-600 ohms, go to next step. If resistance is not 400-600 ohms, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Repair open Green or Blue wires between TCM 22-pin harness connector and countershaft speed sensor harness connector.

DTC P0725/FLASH CODE 11: IGNITION COIL

  1. Disconnect TCM 26-pin harness connector "A". Start engine. Using DVOM, check voltage between TCM 26-pin harness connector "A" terminals No. 5 (Blue wire) and No. 13 (Brown/Black wire) or No. 26 (Brown/Black wire). (Scheme 18)and (Scheme 19).
  2. If battery voltage is present, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system. If battery voltage is not present, repair open or short in Blue wire between ignition coil and TCM 26-pin harness connector "A".

DTC P0730: SHIFT CONTROL SYSTEM

Note. DO NOT perform this DTC test until all other DTC have been repaired first.

  1. Road test vehicle at speed greater than 12 MPH for longer than 30 seconds in 2nd, 3rd and 4th gear. Using scan tool, check for any other DTCs. If any other DTC exist, repair those DTC first, then recheck for DTC P0730. If no other DTC exist, go to next step.
  2. Test clutch pressure. See HYDRAULIC PRESSURE TEST under TESTING in ACURA S4XA OVERHAUL article. If clutch pressure is within specification, go to next step. If clutch pressure is not within specification, repair hydraulic system as necessary. See HYDRAULIC PRESSURE TROUBLE SHOOTING table under HYDRAULIC PRESSURE TEST in ACURA S4XA OVERHAUL article.
  3. Replace shift control solenoid valve assembly. See «SHIFT CONTROL SOLENOID VALVES»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. Turn ignition off and clear codes. See «CLEARING FAULT CODES»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__clearing-fault-codes) . Road test vehicle at speed greater than 12 MPH for longer than 30 seconds in 2nd, 3rd and 4th gear. Recheck DTC. If P0730 resets, repair internal components as necessary. If P0730 does not reset, system is okay.

DTC P0740: LOCK-UP CONTROL SYSTEM

Note. DO NOT perform this DTC test until all other DTC have been repaired first.

  1. Using scan tool, check for any other DTC. If any other DTC exist, repair those DTC first, then recheck for DTC P0740. If no other DTC exist, go to next step.
  2. Test line pressure. See HYDRAULIC PRESSURE TEST under TESTING in ACURA S4XA OVERHAUL article. If clutch pressure is within specification, go to next step. If line pressure is not within specification, repair hydraulic system as necessary. See HYDRAULIC PRESSURE TROUBLE SHOOTING table under HYDRAULIC PRESSURE TEST in ACURA S4XA OVERHAUL article.
  3. Test clutch pressure. If clutch pressure is within specification, go to next step. If clutch pressure is not within specification, repair hydraulic system as necessary. See HYDRAULIC PRESSURE TROUBLE SHOOTING table under HYDRAULIC PRESSURE TEST in ACURA S4XA OVERHAUL article.
  4. Replace lock-up control solenoid valve assembly. See «LOCK-UP CONTROL SOLENOID VALVES»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. Turn ignition off and clear codes. See «CLEARING FAULT CODES»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__clearing-fault-codes) . Road test vehicle at speed greater than 55 MPH for more than one minute. Recheck DTC. If P0740 resets, go to next step. If P0740 does not reset, system is okay.
  5. Replace torque converter. Turn ignition off and clear codes. See «CLEARING FAULT CODES»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__clearing-fault-codes) . Road test vehicle at speed greater than 55 MPH for more than one minute. Recheck DTC. If P0740 resets, replace transaxle. If P0740 does not reset, system is okay.

DTC P0753/FLASH CODE 7: SHIFT CONTROL SOLENOID VALVE "A"

  1. Disconnect TCM 26-pin harness connector "A" and TCM 22-pin harness connector "B". Turn ignition on. Using DVOM, check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  2. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 3 (Blue/Yellow wire). If voltage is not present, go to next step. If voltage is present, repair short to voltage in Blue/Yellow wire.
  3. Turn ignition off. Check shift control solenoid valve "A" resistance at TCM. See «SHIFT CONTROL SOLENOID VALVE»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under COMPONENT TESTING. If resistance is not 12-25 ohms, go to next step. If resistance is 12-25 ohms, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Disconnect shift control solenoid valve connector. Check for continuity between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 3 (Blue/Yellow wire). If continuity does not exist, go to next step. If continuity exists, repair short to ground in Blue/Yellow wire between TCM 26-pin harness connector "A" and shift control solenoid valve.
  5. Check resistance between shift control solenoid valve connector (solenoid side) Blue/Yellow wire and ground. If resistance is not 12-25 ohms, replace shift control solenoid valve assembly. If resistance is 12-25 ohms, check and repair open Blue/Yellow wire between shift control solenoid valve connector and shift control solenoid valve.

DTC P0758/FLASH CODE 8: SHIFT CONTROL SOLENOID VALVE "B"

  1. Disconnect TCM 26-pin harness connector "A" and TCM 22-pin harness connector "B". Turn ignition on. Using DVOM, check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open White/Black wire between TCM 22-pin harness connector "B" and ECM.
  2. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 2 (Green/White wire). If voltage is not present, go to next step. If voltage is present, repair short to voltage in Green/White wire.
  3. Turn ignition off. Check shift control solenoid valve "B" resistance at TCM. See «SHIFT CONTROL SOLENOID VALVE»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under COMPONENT TESTING. If resistance is not 12-25 ohms, go to next step. If resistance is 12-25 ohms, check for loose TCM connectors or replace with a known-good TCM. Recheck system.
  4. Disconnect shift control solenoid valve connector. Check for continuity between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 2 (Green/White wire). If continuity does not exist, go to next step. If continuity exists, repair short to ground in Green/White wire between TCM 26-pin harness connector "A" and shift control solenoid valve.
  5. Check resistance between shift control solenoid valve connector (solenoid side) Green/White wire and ground. If resistance is not 12-25 ohms, replace shift control solenoid valve assembly. If resistance is 12-25 ohms, check and repair open Green/White wire between shift control solenoid valve connector and shift control solenoid valve.

DTC P1705/FLASH CODE 5: A/T GEAR POSITION SWITCH (SHORT)

Note. DTC P1705/Flash Code 5 is set when TCM receives 2 gear position input signals at same time.

  1. Turn ignition on. If any A/T gear position indicator light stays on when gear selector is moved from that gear, go to next step. If all A/T gear position indicator lights go off when gear selector is moved from that gear, system is okay at this time.
  2. Shift to all gear positions except Reverse. Using DVOM, check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 11 (Green/Red wire). (Scheme 18)and (Scheme 19). If battery voltage is present, go to next step. If battery voltage is not present, check and repair short in Green/Red wire between TCM 26-pin harness connector "A" and A/T gear position indicator or A/T gear position switch. If Green/Red wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  3. Shift to all gear positions except Neutral and Park. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 10 (Light Green/Black wire). If battery voltage is present, go to next step. If battery voltage is not present, check and repair short in Light Green/Black wire between TCM 26-pin connector "A" and A/T gear position indicator or A/T gear position switch. If Green/Red wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Shift to all gear positions except "D4". Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 9 (Pink/Green wire). If battery voltage is present, go to next step. If battery voltage is not present, check and repair short in Pink/Green wire between TCM 26-pin harness connector "A" and A/T gear position switch. If Pink/Green wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  5. Shift to all gear positions except "D3". Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 8 (Green/Blue wire). If battery voltage is present, go to next step. If battery voltage is not present, check and repair short in Green/Blue wire between TCM 26-pin harness connector "A" and A/T gear position indicator or A/T gear position switch. If Green/Blue wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  6. Shift to all gear positions except "2". Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 7 (Green/Yellow wire). If battery voltage is present, go to next step. If battery voltage is not present, check and repair short in Green/Yellow wire between TCM 26-pin connector "A" and A/T gear position indicator or A/T gear position switch. If Green/Yellow wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  7. Shift to all gear positions except "1". Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 6 (Light Green/White wire). If battery voltage is present, check for loose TCM connectors or replace with a known-good TCM. Recheck system. If battery voltage is not present, check and repair short in Light Green/White wire between TCM 26-pin harness connector "A" and A/T gear position indicator or A/T gear position switch. If Light Green/White wire is okay, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P1706/FLASH CODE 6: A/T GEAR POSITION SWITCH (OPEN)

  1. Turn ignition on. If any A/T gear position indicator light stays on when gear selector is moved from that gear, go to next step. If all A/T gear position indicator lights go off when gear selector is moved from that gear, system is okay at this time.
  2. Shift to Reverse. Using DVOM, check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 11 (Green/Red wire). (Scheme 18)and (Scheme 19). If voltage is not present, go to next step. If voltage is present, check and repair open in Green/Red wire between TCM 26-pin connector "A" and A/T gear position switch.
  3. Shift to Neutral or Park. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 10 (Light Green/Black wire). If voltage is not present, go to next step. If voltage is present, check and repair open in Light Green/Black wire between TCM 26-pin connector "A" and A/T gear position indicator.
  4. Shift to "D4" position. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 9 (Pink/Green wire). If voltage is not present, go to next step. If voltage is present, check and repair open in Pink/Green wire between TCM 26-pin harness connector "A" and A/T gear position switch.
  5. Shift to "D3" position. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 8 (Green/Blue wire). If voltage is not present, go to next step. If voltage is present, check and repair open in Green/Blue wire between TCM 26-pin harness connector "A" and A/T gear position switch.
  6. Shift to "2" position. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 7 (Green/Yellow wire). If voltage is not present, go to next step. If voltage is present, check and repair open in Green/Yellow wire between TCM 26-pin harness connector "A" and A/T gear position switch.
  7. Shift to "1" position. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 6 (Light Green/White wire). If voltage is present, check and repair open in Light Green/White wire between TCM 26-pin harness connector "A" and A/T gear position switch. If voltage is not present, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P1753/FLASH CODE 1: LOCK-UP CONTROL SOLENOID VALVE "A"

  1. Turn ignition off. Disconnect TCM 26-pin harness connector "A" and TCM 22-pin harness connector "B". Turn ignition on. Using DVOM, check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  2. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 16 (Yellow wire). If voltage is not present, go to next step. If voltage is present, repair short to voltage in Yellow wire.
  3. Turn ignition off. Check lock-up control solenoid valve "A" resistance at TCM. See «LOCK-UP CONTROL SOLENOID VALVE»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under COMPONENT TESTING. If resistance is not 12-25 ohms, go to next step. If resistance is 12-25 ohms, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Disconnect lock-up control solenoid valve connector. Check for continuity between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 16 (Yellow wire). If continuity does not exist, go to next step. If continuity exists, repair short to ground in Yellow wire between TCM 26-pin harness connector "A" and lock-up control solenoid valve.
  5. Check resistance between lock-up control solenoid valve connector (solenoid side) Yellow wire and ground. If resistance is not 12-25 ohms, replace lock-up control solenoid valve assembly. If resistance is 12-25 ohms, check and repair open Yellow wire between lock-up control solenoid valve connector and lock-up control solenoid valve.

DTC P1758/FLASH CODE 2: LOCK-UP CONTROL SOLENOID VALVE "B"

  1. Turn ignition off. Disconnect TCM harness connectors "A" and "B". Turn ignition on. Using DVOM, check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  2. Check voltage between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 15 (Green/Black wire). If voltage is not present, go to next step. If voltage is present, repair short to voltage in Green/Black wire.
  3. Turn ignition off. Check lock-up control solenoid valve "B" resistance at TCM. See «LOCK-UP CONTROL SOLENOID VALVE»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under COMPONENT TESTING. If resistance is not 14-25 ohms, go to next step. If resistance is 12-25 ohms, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Disconnect lock-up control solenoid valve connector. Check for continuity between TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires) and No. 15 (Green/Black wire). If continuity does not exist, go to next step. If continuity exists, repair short to ground in Green/Black between TCM 26-pin harness connector "A" and lock-up control solenoid valve.
  5. Check resistance between lock-up control solenoid valve connector (solenoid side) Green/Black wire and ground. If resistance is not 12-25 ohms, replace lock-up control solenoid valve assembly. If resistance is 12-25 ohms, check and repair open Green/Black wire between lock-up control solenoid valve connector and lock-up control solenoid valve.

DTC P1786/FLASH CODE 14: FAS SIGNAL

  1. Start engine and warm to normal operating temperature. Shift to Park. Cycle key off and on and wait for 2 seconds. Using DVOM, check voltage between TCM 22-pin harness connector "B" terminal No. 19 (Yellow wire) TCM 26-pin harness connector "A" terminals No. 13 (Brown/Black wire) or No. 26 (Brown/Black wire). (Scheme 18)and (Scheme 19). If voltage is not about 5 volts, go to next step. If voltage is about 5 volts, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  2. Turn ignition off. Disconnect TCM 22-pin harness connector "B". Turn ignition on. Check voltage between ECM 31-pin harness connector "C" terminal No. 9 (Yellow wire) and ECM 32-pin harness connector "A" terminal No. 9 (Brown/Black wire). (Scheme 7) If voltage is about 5 volts, go to step 4. If voltage is not about 5 volts, go to next step.
  3. Turn ignition off. Disconnect ECM 31-pin harness connector "C". Check for continuity of Yellow wire between ECM 31-pin harness connector "C" terminal No. 9 and TCM 22-pin harness connector "B" terminal No. 19. If continuity does not exist, repair open Yellow wire between TCM and ECM. If continuity exists, check for loose TCM harness connectors or faulty TCM. Replace with a known-good TCM and recheck system.
  4. Turn ignition off. Disconnect ECM 31-pin harness connector "C". Check for continuity between ECM 31-pin harness connector "C" terminal No. 9 and ground or TCM 22-pin harness connector "B" terminal No. 19 and ground. If continuity exists, repair short in Yellow wire between TCM and ECM. If continuity does not exist, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

Scheme 7

Scheme 7
Scheme 7

DTC P1790/FLASH CODE 3: THROTTLE POSITION (TP) SENSOR

  1. Turn ignition on. Using scan tool, check for any other DTCs or check for Malfunction Indicator Light (MIL) flashing. If any other DTC exist or MIL is flashing, repair those DTC first, then recheck for DTC P1790/Flash Code 3. If no other DTC exist and MIL is not flashing, go to next step.
  2. Turn ignition off. Disconnect TCM harness connectors "A" and "B". Turn ignition on. Check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  3. Check voltage between TCM 22-pin harness connector "B" terminal No. 4 (Red/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or 26 (Brown/Black wires). If voltage is not.4-.6 volts, repair open or short in Red/Black wire between TCM and TP sensor. If voltage is.4-.6 volt, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P1791/FLASH CODE 4: VEHICLE SPEED SENSOR (VSS)

  1. Ensure speedometer operates correctly. If speedometer operates properly, go to next step. If speedometer does not operate properly, see «VEHICLE SPEED SENSOR (VSS)»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__vehicle-speed-sensor-vss) under COMPONENT TESTING.
  2. Raise and support vehicle. Block one front wheel. Place gear selector in Neutral. Turn ignition off. Disconnect TCM 22-pin harness connector "B" and TCM 26-pin harness connector "A". Turn ignition on. While rotating unblocked front wheel, check voltage between TCM 22-pin harness connector "B" terminal No. 5 (Orange wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19).
  3. If voltage does not alternate from zero to 5 volts, check and repair short or open in Orange wire between TCM and VSS. If wire is okay, see «VEHICLE SPEED SENSOR (VSS)»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__vehicle-speed-sensor-vss) under COMPONENT TESTING. If voltage alternates from zero to 5 volts, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P1792/FLASH CODE 10: ENGINE COOLANT TEMPERATURE (ECT) SENSOR

  1. Turn ignition on. Using scan tool, check for any other DTCs or check for Malfunction Indicator Light (MIL) flashing. If any other DTC exists or MIL is flashing, repair those DTC first, then recheck for DTC P1792/Flash Code 10. If no other DTC exist and MIL is not flashing, go to next step.
  2. Turn ignition off. Disconnect TCM 22-pin harness connector "B" and TCM 26-pin harness connector "A". Turn ignition on. Check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or No. 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  3. Check voltage between TCM 22-pin harness connector "B" terminal No. 3 (Red/White wire) and TCM 26-pin harness connector "A" terminals No. 13 or 26 (Brown/Black wires). If voltage is equal to or greater than one volt, repair open Red/White wire between TCM and ECT sensor. If voltage is less than one volt, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

DTC P1794/FLASH CODE 13: BAROMETRIC PRESSURE (BARO) SENSOR

Note. BARO sensor is built into ECM.

  1. Turn ignition off. Disconnect TCM harness connectors "A" and "B". Turn ignition on. Check voltage between TCM 22-pin harness connector "B" terminal No. 20 (White/Black wire) and TCM 26-pin harness connector "A" terminals No. 13 or 26 (Brown/Black wires). (Scheme 18)and (Scheme 19). If voltage is about 5 volts, go to next step. If voltage is not about 5 volts, repair open or short in White/Black wire between TCM 22-pin harness connector "B" and ECM.
  2. Disconnect TCM 22-pin harness connector "B". Check for continuity of Light Green wire between ECM 31-pin harness connector "C" terminal No. 21 and TCM 22-pin harness connector "B" terminal No. 2. (Scheme 7) If continuity exists, go to next step. If continuity does not exist, repair open Light Green wire between ECM and TCM.
  3. Check for continuity between ECM 31-pin harness connector "C" terminal No. 21 (Light Green wire) and ground or TCM 22-pin harness connector "B" terminal No. 2 (Light Green wire) and ground. If continuity exists, repair short to ground in Light Green wire. If continuity does not exist, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and recheck system.

"D4" Indicator Light Does Not Come On

  1. Turn ignition off. Remove jumper from service check connector. Turn ignition on. Shift to "D4" position. If "D4" indicator light does not come on, go to next step. If "D4" indicator light comes on, check for loose TCM connectors or faulty TCM. Replace with a known-good TCM and retest system.
  2. Turn ignition off. Disconnect TCM 26-pin harness connector "A". Using a DVOM, check for continuity between ground and TCM 26-pin harness connector "A" terminals No. 13 and No. 26 (Brown/Black wires). If continuity is present, go to next step. If continuity is not present, check and repair open or poor connection in appropriate Brown/Black wire.
  3. Turn ignition on. Check voltage at TCM 26-pin harness connector "A", between terminals No. 12 (Black/Yellow wire) and No. 13 (Brown/Black wire), then between terminals No. 25 (Black/Yellow wire) and No. 26 (Brown/Black wire). If battery voltage is not present, go to next step. If battery voltage is present, check and repair open or short in appropriate wire between TCM and fuse/relay box on left side of dash, near steering column. See «WIRING DIAGRAMS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) .
  4. Turn ignition off. Reconnect TCM 26-pin harness connector "A". Using a DVOM, check voltage (backprobe) between TCM 26-pin harness connector "A" terminal No. 17 (Green/Black wire) and terminals No. 13 or No. 26 (Brown/Black wires). Turn ignition on. Voltage should be present for 2 seconds. If DVOM indicates voltage as specified, go to next step. If no voltage was indicated, go to step 6 .
  5. Check for an open or short in Green/Black wire between TCM and gauge assembly. Repair as necessary. If wire is okay, repair faulty "D4" indicator bulb or gauge assembly printed circuit board.
  6. Turn ignition off. Disconnect TCM 26-pin harness connector "A". Check for continuity between TCM 26-pin harness connector "A" terminal No. 17 (Green/Black wire) and gauge assembly harness connector "C" terminal No. 10 (Green/Black wire). If continuity is present, go to next step. If continuity is not present, check and repair Green/Black wire between TCM 26-pin harness connector "A" and gauge assembly.
  7. Check for loose TCM connectors or faulty A/T gear position switch. Repair as necessary. If no problem is found, replace with a known-good TCM and recheck system.

"D4" Indicator Light Remains On Constantly (Not Flashing)

  1. Turn ignition off. Disconnect TCM 26-pin harness connector "A". Turn ignition on. Using a DVOM, check voltage between ground and TCM 26-pin harness connector "A" terminal No. 17 (Green/Black wire). If no voltage is present, go to next step. If voltage is present, check and repair Green/Black wire for a short to power between TCM and gauge assembly.
  2. Turn ignition off. Reconnect TCM 26-pin harness connector "A". Turn ignition on. Shift to any position except "D4". Check voltage (backprobe) between ground and TCM 26-pin harness connector "A" terminal No. 9 (Pink/Green wire) If voltage is present, replace TCM. If no voltage is present, check and repair Pink/Green wire for a short to ground. Repair as necessary. If wire is okay, replace A/T gear position indicator.

Note. If necessary, refer to wiring schematic when checking component wiring. (Scheme 11)

  1. Remove instrument panel gauge assembly from instrument panel. Disconnect harness connectors "B", "C" and "D" from rear of instrument panel gauge assembly. (Scheme 8)
  2. Check for voltage and continuity at harness connectors as specified. (Scheme 9) If necessary, check ground connections G201 or G401. Ground connection G201 is located at right front corner of engine compartment, on inner fender panel. Ground connection G401 is located behind left side of dash, above kick panel. (Scheme 10)
  3. If necessary, check No. 15 fuse (10-amp). Fuse is located in passenger compartment fuse/relay box. If necessary, access TCM. TCM is located behind left kick panel. (Scheme 3) If necessary to access ECM, the ECM is located behind right kick panel, below instrument panel.

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9

Scheme 10

Scheme 10
Scheme 10

Scheme 11

Scheme 11
Scheme 11

A/T GEAR POSITION SWITCH

Note. The A/T gear position switch contains back-up light switch and neutral position switch. Back-up light switch and neutral position switch can be checked when checking A/T gear position switch.

  1. Remove center console. Disconnect A/T gear position switch harness connector. Note connector terminal identification. (Scheme 12)
  2. Using ohmmeter, check continuity between specified terminal(s) with shift lever in indicated positions. See «A/T GEAR POSITION SWITCH CONTINUITY»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) table. NOTE: Check continuity while moving shift lever back and forth in free play area of each gear position. DO NOT touch push button on shift lever when checking continuity.
  3. If continuity is not as specified, A/T gear position switch may require adjustment. See «A/T GEAR POSITION SWITCH»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. If correct continuity cannot be obtained by adjusting A/T gear position switch, replace switch assembly.
ApplicationShift Lever PositionContinuity Between Terminals
With Cruise Control
A/T Gear Position Switch"P"A & L
—"R"A & M
—"N"A & N
—D4I, A & G
—DI, A & F
—"2"I, A & E
—"1"A & B
Back-Up Light Switch"R"C & D
Neutral Position Switch"P"J & K
—"N"J & K
Without Cruise Control
A/T Gear Position Switch"P"A & L
—"R"A & M
—"N"A & N
—D4A & G
—DA & F
—"2"A & E
—"1"A & B
Back-Up Light Switch"R"C & D
Neutral Position Switch"P"J & K
—"N"J & K

A/T GEAR POSITION SWITCH CONTINUITY

Scheme 12

Scheme 12
Scheme 12

BRAKELIGHT SWITCH

  1. Disconnect harness connector from brakelight switch, located on brake pedal support. (Scheme 3) Note brakelight switch terminal identification. (Scheme 13)
  2. On models with cruise control, check continuity between terminals "A" and "D" with brake pedal released. On all models, check continuity between terminals "B" and "C" with brake pedal depressed. Continuity should exist.
  3. If continuity is not as specified, ensure brake pedal is properly adjusted so brakelight switch has proper travel for switch operation. If brakelight switch travel is okay, replace brakelight switch.

Scheme 13

Scheme 13
Scheme 13

COUNTERSHAFT SPEED SENSOR

Disconnect harness connector from countershaft speed sensor located on top of transaxle. (Scheme 4) Using ohmmeter, check resistance between sensor terminals. Replace countershaft speed sensor if resistance is not 400-600 ohms.

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

  1. ECT sensor is located on cylinder head, below distributor. (Scheme 4)
  2. Disconnect ECT sensor harness connector. Using ohmmeter, check sensor resistance in accordance with coolant temperature. (Scheme 14) Replace ECT sensor if resistance is not as specified.

Scheme 14

Scheme 14
Scheme 14
  1. Lock-up control solenoid valves are located on transaxle. (Scheme 4) Disconnect lock-up control solenoid valves harness connector.
  2. Using ohmmeter, check resistance between terminal No. 1 (solenoid valve "B") or terminal No. 2 (solenoid valve "A") and body ground. (Scheme 15) Resistance should be 12-25 ohms. If resistance is not as specified, replace lock-up control solenoid valve assembly. If resistance is as specified, go to next step.
  3. Check lock-up control solenoid valve operation. Ensure solenoid valve body is grounded. Apply battery voltage to terminal No. 1 (solenoid valve "B") or terminal No. 2 (solenoid valve "A"). Clicking sound should be heard, indicating solenoid valve operation. Replace lock-up control solenoid valve assembly if either solenoid valve fails to operate.

Scheme 15

Scheme 15
Scheme 15

MAINSHAFT SPEED SENSOR

Disconnect mainshaft speed sensor harness connector. Sensor is located on top of transaxle. (Scheme 4) Using ohmmeter, check resistance between sensor terminals. Replace mainshaft speed sensor if resistance is not 400-600 ohms.

PARKING PIN SWITCH

  1. Remove center console. Disconnect parking pin switch harness connector. Parking pin switch is located on left side of shifter assembly.
  2. Using an ohmmeter, check continuity between parking pin switch terminals. Continuity should exist when shift lever button is depressed. Continuity should not exist with shift lever button released. If continuity is not as specified, replace parking pin switch.
  1. Disconnect shift control solenoid valves harness connector. Shift control solenoid valves are located on transaxle. (Scheme 4)
  2. Using ohmmeter, check resistance between ground and solenoid terminals No. 1 (solenoid valve "A") or No. 3 (solenoid valve "B"). (Scheme 16) Resistance should be 12-25 ohms. Replace shift control solenoid valve assembly if resistance of either solenoid valve is not as specified. If resistance is as specified, go to next step.
  3. Check shift control solenoid valve operation. Ensure solenoid valve body is grounded. Apply battery voltage to solenoid terminal No. 1 (solenoid valve "A") or terminal No. 3 (solenoid valve "B"). Clicking sound should be heard, indicating solenoid valve operation. Replace shift control solenoid valve assembly if solenoid valve fails to operate.

Scheme 16

Scheme 16
Scheme 16

THROTTLE POSITION (TP) SENSOR

TP sensor should input a .5-volt signal to TCM at closed throttle. At full throttle, signal should be about 4.5 volts. Voltage should change smoothly as throttle valve is opened and closed. If voltage is not as specified, check throttle position sensor wiring circuit. See WIRING DIAGRAMS .

Note. If problem in TP sensor exists, sensor may set DTC P1790/FLASH CODE 3 in TCM. See RETRIEVING FAULT CODES under SELF-DIAGNOSTIC SYSTEM.

VEHICLE SPEED SENSOR (VSS)

  1. Ensure fuse No. 15 (7.5-amp) in passenger compartment fuse/relay box is okay. Replace fuse if necessary.
  2. Disconnect Vehicle Speed Sensor (VSS) harness connector. The VSS is located on top of transaxle. (Scheme 4)
  3. Turn ignition on. Check voltage between Black wire and the Black/Yellow wire on harness connector. If battery voltage is present, go to step 5. If battery voltage is not present, go to next step.
  4. Check continuity between Black wire and ground. If continuity exists, check and repair open circuit in Black/Yellow wire between harness connector and fuse. If continuity does not exist, check for open circuit in Black wire (ground circuit). Ground is located on coolant hose housing, just below distributor.
  5. Check voltage between Blue/White wire and Black wire in harness connector. Voltage should be about 5 volts. If voltage is as specified, go to next step. If voltage is not as specified, check for open or short circuit in Blue/White wire.
  6. Reinstall VSS harness connector. Raise and support vehicle so front wheels can rotate. Connect voltmeter to Blue/White wire on VSS harness connector and ground. Turn ignition on. Place shift lever in Neutral position. Slowly rotate one front wheel while holding remaining front wheel from rotating and note voltage reading.
  7. Ensure voltage pulses from zero volts to about 5 volts. If voltage pulses correctly, vehicle speed sensor is okay. If voltage does not pulse correctly, replace vehicle speed sensor. See «VEHICLE SPEED SENSOR (VSS)»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa) under REMOVAL & INSTALLATION. Turn ignition off. Remove voltmeter.

Removal

Remove center console. Disconnect 14-pin harness connector from A/T gear position switch. Remove nuts and A/T gear position switch.

Installation

  1. Ensure parking brake is applied. Place switch slider on A/T gear position switch in Neutral position. (Scheme 17) Place shift lever in Neutral.
  2. Install A/T gear position switch and nuts. DO NOT tighten nuts at this time. The A/T gear position switch must be adjusted.
  3. To adjust A/T gear position switch, place shift lever in Park. Ensure retaining nuts are loose. Note 14-pin harness connector terminal identification. (Scheme 12)
  4. Connect ohmmeter between terminals "A" and "L". Move A/T gear position switch toward rear of console until continuity exists between terminals "A" and "L". Free play at lock pin should be.079" (2.0 mm). (Scheme 17)
  5. Tighten nuts. Check A/T gear position switch for correct continuity in all gears. See «A/T GEAR POSITION SWITCH»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__at-gear-position-switch) under COMPONENT TESTING. If proper adjustment cannot be obtained, check for damaged shift lever detent or bracket. Install harness connector and center console.

Scheme 17

Scheme 17
Scheme 17

Removal & Installation

  1. Disconnect brakelight switch harness connector. Remove lock nut from brakelight switch. Unscrew brakelight switch and remove. To install, screw brakelight switch inward until brakelight plunger is fully depressed.
  2. Back off brakelight switch 1/4 turn. Ensure .010" (.30 mm) clearance exists between threaded end of brakelight switch and pad area on brake pedal. Install and tighten lock nut. Install harness connector. Ensure brakelights and cruise control operate properly.
  1. Disconnect harness connector at countershaft speed sensor. Countershaft speed sensor is located on top of transaxle. (Scheme 4)
  2. Remove clamp for the electrical wiring. Remove bolt, countershaft speed sensor and "O" ring. To install, reverse removal procedure using NEW "O" ring. Install and tighten bolt to specification. See «TORQUE SPECIFICATIONS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__torque-specifications).

ECT sensor is located on cylinder head, below distributor. (Scheme 4) Drain cooling system. Remove ECT sensor.

Install and tighten engine coolant temperature sensor. Fill cooling system to top of radiator neck. Warm engine until cooling fan turns on and off twice. Finish filling cooling system.

  1. Lock-up control solenoid valve assembly is located on transaxle. (Scheme 4) Disconnect harness connector at lock-up control solenoid valves.
  2. Remove bolts, lock-up control solenoid valve assembly and gasket. To install, reverse removal procedure using NEW gasket. Tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__torque-specifications).
  1. Disconnect harness connector at mainshaft speed sensor. Mainshaft speed sensor is located on top of transaxle. (Scheme 4)
  2. Remove clamp for the electrical wiring. Remove bolt, mainshaft speed sensor and "O" ring. To install, reverse removal procedure using NEW "O" ring. Install and tighten bolt to specification. See «TORQUE SPECIFICATIONS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__torque-specifications).
  1. Shift control solenoid valve assembly is located on transaxle. (Scheme 4) Disconnect harness connector at shift control solenoid valves.
  2. Remove bolts, shift control solenoid valve assembly and gasket. To install, reverse removal procedure using NEW gasket. Tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__torque-specifications).

TP sensor is mounted on side of throttle body and is replaced as an assembly with throttle body.

  1. Disconnect harness connector from VSS, located on top of transaxle. (Scheme 4)
  2. Remove bolts and vehicle speed sensor. DO NOT lose small drive link, located between vehicle speed sensor and adapter body on transaxle. To install, reverse removal procedure. Install and tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/acura/integra/iii-1993-2001/remont/automatic-trans/#diagnosis-s4xa__torque-specifications).

TORQUE SPECIFICATIONS

ApplicationINCH Lbs. (N.m)
Air Bleeder Bolt87 (9.8)
Countershaft Speed Sensor Bolt106 (12.0)
Lock-Up Control Solenoid Valve Assembly Bolt106 (12.0)
Mainshaft Speed Sensor Bolt106 (12.0)
Shift Control Solenoid Valve Assembly Bolt106 (12.0)
Shift Lock Solenoid Nut87 (9.8)
Vehicle Speed Sensor Bolt87 (9.8)

TORQUE SPECIFICATIONS

PIN VOLTAGE CHARTS

Note. For TCM terminal identification and locations (Scheme 18)and (Scheme 19).

Scheme 18

Scheme 18: PIN VOLTAGE CHARTS
Scheme 18: PIN VOLTAGE CHARTS

Scheme 19

Scheme 19
Scheme 19

Transaxle Wiring Diagram (1997 Integra). Scheme 20

Scheme 20: Transaxle Wiring Diagram (1997 Integra)
Scheme 20: Transaxle Wiring Diagram (1997 Integra)

Transaxle Wiring Diagram (1998-99 Integra). Scheme 21

Scheme 21: Transaxle Wiring Diagram (1998-99 Integra)
Scheme 21: Transaxle Wiring Diagram (1998-99 Integra)

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