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PROBLEM SYMPTOMS TABLE Toyota RAV4 III

Automatic Transmission - U151E: Diagnosis 15 illustrations ~4033 words

PROBLEM SYMPTOMS TABLE

HINT

  1. Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
  2. The Matrix Chart is divided into 2 chapters. When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to 2, proceed as instructed.
  3. If the instruction "Proceed to next circuit inspection shown in problem symptoms table" is given in the flowchart for each circuit, proceed to the next suspected area in the table.
  4. If the problem still occurs even though there are no malfunctions in any of the circuits, check the ECM and replace it if necessary.
  1. Chapter 1: Electronic Circuit Matrix Chart ELECTRONIC CIRCUIT MATRIX CHART Symptom Suspected area See page No down-shift (a particular gear, from 1st to 4th gear, is not down-shifted) ECM No down-shift (5th -> 4th) 1. Transmission control switch (4 <--> D position) circuit «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 2. Shift solenoid valve S4 circuit* «DTC P0766 Shift Solenoid "D" Performance (Shift Solenoid Valve S4)»(ref-265069-S18891471902007092000000) 3. ECM No up-shift (a particular gear, from 1st to 4th gear, is not up-shifted) ECM No up-shift (4th -> 5th) 1. Transmission control switch (4 <--> D position) circuit «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 2. Shift solenoid valve S4 circuit* «DTC P0766 Shift Solenoid "D" Performance (Shift Solenoid Valve S4)»(ref-265069-S18891471902007092000000) 3. ECM No lock-up 1. Stop light switch circuit* «MONITOR DESCRIPTION»(ref-265069-S05223416422007092000000) 2. Engine coolant temperature sensor circuit* 3. ECM No lock-up off ECM Shift point too high or too low 1. Throttle position sensor circuit* 2. ECM Up-shift to 5th from 4th while shift lever on 4 1. Transmission control switch (4 <--> D position) circuit «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 2. ECM Up-shift to 5th from 4th while engine is cold 1. Engine coolant temperature sensor circuit* 2. ECM Up-shift to 2nd from 1st while shift lever is on L 1. Transmission control switch (2 <--> L position) circuit* «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 2. ECM Harsh engagement (N -> D) 1. Shift solenoid valve SL1 circuit* «DTC P0746 Pressure Control Solenoid "A" Performance (Shift Solenoid Valve SL1)»(ref-265069-S34528846602007092000000) 2. ECM Harsh engagement (lock-up) ECM Harsh engagement (any driving position) ECM Poor acceleration ECM No kick-down ECM Engine stalls when starting off or stopping ECM Malfunction in shifting 1. Park/Neutral position switch circuit* «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 2. Transmission control switch (4 <--> D position) circuit «TRANSMISSION CONTROL CABLE ASSEMBLY»(ref-265069-S17090592262007092000000) 3. ECM HINT: *: When the circuit is defective, a DTC may be output.
  2. Chapter 2: On-Vehicle Repair and Off-Vehicle Repair ON-VEHICLE REPAIR AND OFF-VEHICLE REPAIR Symptom Suspected area See page Vehicle does not move in any forward position and with the shift lever on R 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B3 U/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Vehicle does not move with shift lever on R 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. C2 reverse clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. B2 1st and reverse brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No up-shift (1st -> 2nd) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No up-shift (2nd -> 3rd) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. C0 direct and O/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No up-shift (3rd -> 4th) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No up-shift (4th -> 5th) 1. Shift solenoid valve S4 «DTC P0766 Shift Solenoid "D" Performance (Shift Solenoid Valve S4)»(ref-265069-S18891471902007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 3. C3 U/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No down-shift (5th -> 4th) 1. Shift solenoid valve S4 «DTC P0766 Shift Solenoid "D" Performance (Shift Solenoid Valve S4)»(ref-265069-S18891471902007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) No down-shift (4th -> 3rd) Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) No down-shift (3rd -> 2nd) Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) No down-shift (2nd -> 1st) Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) No lock-up or no lock-up off 1. Shift solenoid valve DSL «DTC P0741 Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve DSL)»(ref-265069-S17942030862007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 3. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Harsh engagement (N -> D) 1. Shift solenoid valve SL1 «DTC P0746 Pressure Control Solenoid "A" Performance (Shift Solenoid Valve SL1)»(ref-265069-S34528846602007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 3. C1 accumulator «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 4. C1 forward clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 5. F1 No. 1 one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 6. F2 U/D one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (lock-up) 1. Shift solenoid valve SL2 «DTC P0776 Pressure Control Solenoid "B" Performance (Shift Solenoid Valve SL2)»(ref-265069-S26494214952007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 3. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Harsh engagement (N -> R) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. C2 accumulator «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. C2 reverse clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 4. B2 1st and reverse brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (1st -> 2nd -> 3rd -> 4th -> 5th) 1. Shift solenoid valve SLT «DTC P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)»(ref-265069-S39759352422007092000000) 2. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) Harsh engagement (1st -> 2nd) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (2nd -> 3rd) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. C0 accumulator «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. C0 direct and O/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (3rd -> 4th) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (4th -> 5th) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. C3 accumulator «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. B3 U/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Harsh engagement (5th -> 4th) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B3 accumulator «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (forward and reverse: after warm-up) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. Oil strainer «VALVE BODY»(ref-265069-S13241704772007092000000) 3. C0 direct and O/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 4. C1 forward clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 5. C3 U/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 6. B1 2nd and brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 7. B3 U/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 8. F1 No. 1 one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 9. F2 U/D one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 10. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Slip or shudder (particular position: just after engine starts) Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Slip or shudder (shift lever on R) 1. C2 reverse clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 2. B2 1st and reverse brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (1st) 1. C1 forward clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 2. F1 No. 1 one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 3. F2 U/D one-way clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (2nd) B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (3rd) C0 direct and O/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (4th) B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Slip or shudder (5th) C3 U/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Shift position too high or too low Shift solenoid valve SLT «DTC P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)»(ref-265069-S39759352422007092000000) No engine braking (1st to 4th/shift lever on D) B3 U/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No engine braking (1st/shift lever on L) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B2 1st and reverse brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No engine braking (2nd/shift lever on 2) 1. Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) 2. B1 2nd and O/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No engine braking (3rd/shift lever on 3) B3 U/D brake «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) No kick-down Valve body assembly «VALVE BODY»(ref-265069-S13241704772007092000000) Poor acceleration (all positions) 1. Shift solenoid valve SLT «DTC P2716 Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)»(ref-265069-S39759352422007092000000) 2. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000) Poor acceleration (5th) 1. C3 U/D clutch «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) 2. U/D planetary gear unit «AUTOMATIC TRANSAXLE UNIT»(ref-265069-S33206202242007092000000) Engine stalls when starting off or stopping 1. Shift solenoid valve DSL «DTC P0741 Torque Converter Clutch Solenoid Performance (Shift Solenoid Valve DSL)»(ref-265069-S17942030862007092000000) 2. Torque converter clutch «TORQUE CONVERTER AND DRIVE PLATE»(ref-265069-S14448421402007092000000)

Scheme 1197

Scheme 1197: TERMINALS OF ECM
Scheme 1197: TERMINALS OF ECM

Scheme 1198

Scheme 1198
Scheme 1198

Scheme 1199

Scheme 1199
Scheme 1199

Scheme 1200

Scheme 1200
Scheme 1200

Scheme 1201

Scheme 1201
Scheme 1201

Scheme 1202

Scheme 1202
Scheme 1202

Scheme 1203

Scheme 1203
Scheme 1203

Scheme 1204

Scheme 1204
Scheme 1204
  1. CHECK ECM Measure the voltage of the ECM connector. HINT: Each ECM terminal's standard voltage is shown in the table below. In the table, first follow the information under "Condition". Look under "Symbols (Terminal No.)" for the terminals to be inspected. The standard voltage between the terminals is shown under "Specified Condition". Use the illustration above as a reference for the ECM terminals. ECM TERMINALS AND SPECIFIED CONDITION Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition P (B30-24) - E1 (B30-81) R - BR P shift position switch signal Ignition switch ON and transfer shift lever on P 10 to 14 V P (B30-24) - E1 (B30-81) R - BR P shift position switch signal Ignition switch ON and transfer shift lever not on P Below 1 V R (B30-25) - E1 (B30-81) B - BR R shift position switch signal Ignition switch ON and transfer shift lever on R 10 to 14 V R (B30-25) - E1 (B30-81) B - BR R shift position switch signal Ignition switch ON and transfer shift lever not on R Below 1 V N (B30-27) - E1 (B30-81) L-B - BR N shift position switch signal Ignition switch ON and transfer shift lever on N 10 to 14 V N (B30-27) - E1 (B30-81) L-B - BR N shift position switch signal Ignition switch ON and transfer shift lever not on N Below 1 V D (B30-26) - E1 (B30-81) L - BR D shift position switch signal Ignition switch ON and transfer shift lever on D or 3 10 to 14 V D (B30-26) - E1 (B30-81) L - BR D shift position switch signal Ignition switch ON and transfer shift lever not on D or 3 Below 1 V 4 (A9-25) - E1 (B30-81) P - BR 4 shift position switch signal Ignition switch ON and transfer shift lever on 4 10 to 14 V 4 (A9-25) - E1 (B30-81) P - BR 4 shift position switch signal Ignition switch ON and transfer shift lever not on 4 Below 1 V 3 (B30-29) - E1 (B30-81) LG - BR 3 shift position switch signal Ignition switch ON and transfer shift lever on 3 10 to 14 V 3 (B30-29) - E1 (B30-81) LG - BR 3 shift position switch signal Ignition switch ON and transfer shift lever not on 3 Below 1 V 2 (B30-28) - E1 (B30-81) V - BR 2 shift position switch signal Ignition switch ON and transfer shift lever on 2 and L 10 to 14 V 2 (B30-28) - E1 (B30-81) V - BR 2 shift position switch signal Ignition switch ON and transfer shift lever not on 2 and L Below 1 V L (A9-26) - E1 (B30-81) V - BR L shift position switch signal Ignition switch ON and transfer shift lever on L 10 to 14 V L (A9-26) - E1 (B30-81) V - BR L shift position switch signal Ignition switch ON and transfer shift lever not on L Below 1 V STP (A9-36) - E1 (B30-81) L - BR Stop light switch signal Brake pedal is depressed Between 10 V and 14 V STP (A9-36) - E1 (B30-81) L - BR Stop light switch signal Brake pedal is released Below 1 V SL1+ (B30-16) - SL1- (B30-17) P - LG SL1 solenoid signal Engine idle speed Pulse generation (see ) SL1+ (B30-16) - SL1- (B30-17) P - LG SL1 solenoid signal Ignition switch ON Pulse generation (see ) SL1+ (B30-16) - SL1- (B30-17) P - LG SL1 solenoid signal 1st gear Pulse generation (see ) SL1+ (B30-16) - SL1- (B30-17) P - LG SL1 solenoid signal Not on 1st gear Below 1 V SL2+ (B30-12) - SL2- (B30-13) BR - R SL2 solenoid signal Engine idle speed Pulse generation (see ) SL2+ (B30-12) - SL2- (B30-13) BR - R SL2 solenoid signal Ignition switch ON Pulse generation (see ) SL2+ (B30-12) - SL2- (B30-13) BR - R SL2 solenoid signal 1st or 2nd gear Pulse generation (see ) SL2+ (B30-12) - SL2- (B30-13) BR - R SL2 solenoid signal 3rd, 4th or 5th gear Below 1 V SL3+ (B30-14) - SL3- (B30-15) GR - G-R SL3 solenoid signal Engine idle speed Pulse generation (see ) SL3+ (B30-14) - SL3- (B30-15) GR - G-R SL3 solenoid signal Ignition switch ON Pulse generation (see ) SL3+ (B30-14) - SL3- (B30-15) GR - G-R SL3 solenoid signal 1st or 2nd gear Pulse generation (see ) SL3+ (B30-14) - SL3- (B30-15) GR - G-R SL3 solenoid signal 3rd, 4th or 5th gear Below 1 V DSL (B30-9) - E01 (B30-22) V - BR DSL solenoid signal Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Below 1 V DSL (B30-9) - E01 (B30-22) V - BR DSL solenoid signal Vehicle driving under lockup position Pulse generation (see ) SLT+ (B30-11) - SLT- (B30-10) L - W SLT solenoid signal Engine idle speed Pulse generation (see ) SR (B30-8) - E01 (B30-22) G - BR SR solenoid signal Ignition switch ON Below 1 V SR (B30-8) - E01 (B30-22) G - BR SR solenoid signal 3th, 4th or 5th gear 10 to 14 V SR (B30-8) - E01 (B30-22) G - BR SR solenoid signal 1st or 2nd gear Below 1 V S4 (B30-7) - E01 (B30-22) L-B - BR S4 solenoid signal Ignition switch ON Below 1 V S4 (B30-7) - E01 (B30-22) L-B - BR S4 solenoid signal 5th gear 10 to 14 V S4 (B30-7) - E01 (B30-22) L-B - BR S4 solenoid signal Not on 5th gear Below 1 V THO1 (B30-126) - ETHO (B30-124) Y - B ATF temperature sensor signal ATF temperature 115°C (239°F) or more Below 1.5 V NT+ (B30-6) - NT- (B30-5) B - G Speed sensor (NT) signal Vehicle speed 20 km/h (12 mph) Pulse generation (see ) NC+ (B30-4) - NC- (B30-3) W - Y Speed sensor (NC) signal Vehicle speed 30 km/h (19 mph) (3rd gear) Engine speed 1,400 rpm Pulse generation (see ) Using an oscilloscope, check the waveform 1. Waveform 1 (Reference) WAVEFORM 1 (REFERENCE) Item Content Symbols (Terminal No.) SL1+ (B30-16) - SL1- (B30-17) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 2. Waveform 2 (Reference) WAVEFORM 2 (REFERENCE) Item Content Symbols (Terminal No.) SL2+ (B30-12) - SL2- (B30-13) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 3. Waveform 3 (Reference) WAVEFORM 3 (REFERENCE) Item Content Symbols (Terminal No.) SL3+ (B30-14) - SL3- (B30-15) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 4. Waveform 4 (Reference) WAVEFORM 4 (REFERENCE) Item Content Symbols (Terminal No.) DSL (B30-9) - E01 (B30-22) Tool Setting 10 V/DIV., 100 msec./DIV. Condition Vehicle speed 65 km/h (40 mph), lock-up (ON to OFF) Using an oscilloscope, check the waveform 5. Waveform 5 (Reference) WAVEFORM 5 (REFERENCE) Item Content Symbols (Terminal No.) SLT+ (B30-11) - SLT- (B30-10) Tool Setting 5 V/DIV., 1 msec./DIV. Condition Engine idle speed Using an oscilloscope, check the waveform 6. Waveform 6 (Reference) WAVEFORM 6 (REFERENCE) Item Content Symbols (Terminal No.) NT+ (B30-6) - NT- (B30-5) Tool Setting 5 V/DIV., 0.5 msec./DIV. Condition Vehicle speed 20 km/h (12 mph) Using an oscilloscope, check the waveform 7. Waveform 7 (Reference) WAVEFORM 7 (REFERENCE) Item Content Symbols (Terminal No.) NC+ (B30-4) - NC- (B30-3) Tool Setting 1 V/DIV., 1 msec./DIV. Condition Vehicle speed 30 km/h (19 mph) (3rd gear) Engine speed 1,400 rpm

Scheme 1205

Scheme 1205: DIAGNOSIS SYSTEM
Scheme 1205: DIAGNOSIS SYSTEM

Scheme 1206

Scheme 1206
Scheme 1206

Scheme 1207

Scheme 1207
Scheme 1207

Scheme 1208

Scheme 1208
Scheme 1208
  1. DESCRIPTION When troubleshooting On-Board Diagnostic (OBD II) vehicles, the vehicle must be connected to the OBD II scan tool (complying with SAE J1987). Various data output from the vehicle's ECM can then be read. OBD II regulations require that the vehicle's onboard computer illuminates the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in: The emission control system/components The powertrain control components (which affect vehicle emissions) The computer In addition, the applicable Diagnostic Trouble Codes (DTCs) prescribed by SAE J2012 are recorded in the ECM memory. When the malfunction does not reoccur, the MIL stays illuminated until the ignition switch is turned OFF, and the MIL turns OFF when the engine is started. However, the DTCs remain recorded in the ECM memory. To check DTCs, connect the intelligent tester to the Data Link Connector 3 (DLC3) of the vehicle. The tester displays DTCs, the freeze frame data and a variety of the engine data. The DTCs and freeze frame data can be erased with the tester (see «DATA LIST / ACTIVE TEST»(ref-265069-S37135958312007092000000) ).
  2. NORMAL MODE AND CHECK MODE The diagnosis system operates in "normal mode" during normal vehicle use. In normal mode, "2 trip detection logic" is used to ensure accurate detection of malfunctions. "Check mode" is also available to technicians as an option. In check mode, "1 trip detection logic" is used for simulating malfunction symptoms and increasing the system's ability to detect malfunctions, including intermittent malfunctions.
  3. TRIP DETECTION LOGIC When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the same malfunction is detected during the next drive cycle, the MIL is illuminated (2nd trip).
  4. FREEZE FRAME DATA Freeze frame data records the engine conditions (fuel system, calculated load, engine coolant temperature, fuel trim, engine speed, vehicle speed, etc.) when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred. The intelligent tester records freeze frame data in 5 different instances: 1) 3 times before the DTC is set, 2) once when the DTC is set, and 3) once after the DTC is set. These data can be used to simulate the vehicle's condition around the time when the malfunction occurred. The data may help find the cause of the malfunction, or judge if the DTC is being caused by a temporary malfunction or not.
  5. DATA LINK CONNECTOR 3 (DLC3) The vehicle's ECM uses the ISO 15765-4 for communication protocol. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format. Terminal of DLC3 DLC3 TERMINAL AND SPECIFIED CONDITION Symbols (Terminal No.) Terminal Description Condition Specified Condition SIL (7) - SG (5) Bus "+" line During transmission Pulse generation CG (4) - Body ground Chassis ground Always Below 1 ohms SG (5) - Body ground Signal ground Always Below 1 ohms BAT (16) - Body ground Battery positive Always 9 to 14 V CANH (6) - CANL (14) CAN bus line Ignition switch OFF (1) 54 to 69 ohms CANH (6) - Battery positive HIGH-level CAN bus line Ignition switch OFF (1) 6 kohms or higher CANH (6) - CG (4) HIGH-level CAN bus line Ignition switch OFF (1) 200 ohms or higher CANL (14) - Battery positive LOW-level CAN bus line Ignition switch OFF (1) 6 kohms or higher CANL (14) - CG (4) LOW-level CAN bus line Ignition switch OFF (1) 200 ohms or higher (1) Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness and connector. HINT: Connect the cable of the intelligent tester to the DLC3, turn the ignition switch ON and attempt to use the tester. If the screen displays UNABLE TO CONNECT TO VEHICLE, a problem exists in the vehicle side or the tester side. If communication is normal when the tester is connected to another vehicle, inspect the DLC3 on the original vehicle. If communication is still not possible when the tester is connected to another vehicle, the problem is probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.
  6. CHECK MIL Check that the MIL illuminates when turning the ignition switch ON. If the MIL does not illuminate, there is a problem in the MIL circuit (see «INSPECTION PROCEDURE»(ref-281541-S30040915522008031700000) ). When the engine is started, the MIL should turn off.
  7. ALL READINESS For this vehicle, using the intelligent tester allows readiness codes corresponding to all DTCs to be read. When the diagnosis (normal or malfunctioning) has been completed, readiness codes are set. Enter the following menus: ENHANCED OBD II / MONITOR STATUS.

Scheme 1209

Scheme 1209
Scheme 1209
  1. CHECK DTC DTCs which are stored in the ECM can be displayed with the intelligent tester. The intelligent tester can display pending DTCs and current DTCs. Some DTCs are not stored unless a malfunction is detected in consecutive driving cycles. When a malfunction is detected in only one driving cycle, it is stored as a pending DTC. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. Turn the ignition switch ON and turn the tester ON. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES (or PENDING CODE). Confirm the DTCs and freeze frame data, and then write them down. Confirm the details of the DTCs (see «DATA LIST / ACTIVE TEST»(ref-265069-S37135958312007092000000) ). NOTE: When simulating a symptom with the scan tool to check for DTCs, use normal mode. For codes on the DIAGNOSTIC TROUBLE CODE CHART subject to "2 trip detection logic", perform the following actions. Turn the ignition switch OFF after the symptom is simulated once. Then repeat the simulation process. When the symptom has been simulated twice, the MIL illuminates and the DTCs are recorded in the ECM.
  2. CLEAR DTC When using the intelligent tester: Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. Turn the ignition switch ON and turn the tester ON. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CLEAR CODES. Then press YES. HINT: When operating the tester to erase the codes, the DTCs and freeze frame data will be erased. When not using the intelligent tester: Disconnect the cable from the negative (-) battery terminal or remove the EFI MAIN and ETCS fuses from the engine room No. 1 relay block and engine room No. 1 junction block for 60 seconds or more. However, if you disconnect the cable from the negative (-) battery terminal, perform the "INITIALIZATION" procedure (see «INITIALIZATION»(ref-265069-S13912127652007092000000) ).

Scheme 1210

Scheme 1210: CHECK MODE PROCEDURE
Scheme 1210: CHECK MODE PROCEDURE

Scheme 1211

Scheme 1211
Scheme 1211
  1. DESCRIPTION Check mode has a higher sensitivity to malfunctions and can detect malfunctions that normal mode cannot detect. Check mode can also detect all the malfunctions that normal mode can detect. In check mode, DTCs are detected with 1 trip detection logic.
  2. CHECK MODE PROCEDURE Make sure that the following conditions below are met: Battery positive voltage 11 V or more Throttle valve fully closed Transaxle in the P or N position A/C OFF Turn the ignition switch OFF. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3. Turn the ignition switch ON and turn the tester ON. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / CHECK MODE. Change the ECM to check mode. Make sure the MIL flashes as shown in the illustration. NOTE: All DTCs and freeze frame data will be erased if: 1) the intelligent tester is used to change the ECM from normal mode to check mode or vice versa; or 2) during check mode, the ignition switch is turned from ON to ACC or OFF. Before check mode, make notes of the DTCs and freeze frame data. Start the engine. The MIL should turn off after the engine starts. Perform "MONITOR DRIVE PATTERN" for the ECT test (see «MONITOR DRIVE PATTERN»(ref-265069-S19085572322007092000000) ). (Or, simulate the conditions of the malfunction described by the customer.) After simulating the malfunction conditions, use the tester to check the DTC and freeze frame data.