Lan System: Other — Nissan Maxima A34 (2003-2008)

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in SUPPLEMENTAL RESTRAINT SYSTEM (SRS) and SEAT BELTS .

WARNING

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SUPPLEMENTAL RESTRAINT SYSTEM (SRS) . Do not use electrical test equipment on any circuit related to the SRS unless instructed to. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precautions When Using CONSULT-II

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.

CAUTION

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

CHECK POINTS FOR USING CONSULT-II

Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle? If YES, GO TO 2 . If NO, GO TO 5 .
Is there any indication other than indications relating to CAN communication system in the self-diagnosis results? If YES, GO TO 3 . If NO, GO TO 4 .
Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.
Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communication. Therefore, erase the self-diagnosis results.
Diagnose CAN communication system. Refer to «CAN COMMUNICATION UNIT»(ref-233663-S31158088962006052600000) .

Scheme 130

Scheme 130: Precautions for CAN System

Scheme 131

Do not apply voltage of 7.0 V or higher to terminal to be measured.
Maximum open terminal voltage of tester in use must be less than 7.0 V.
Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.
Area to be repaired must be soldered and wrapped with tape. Make sure that fraying of twisted wire is within 110 mm (4.33 in).
Do not make a bypass connection to repaired area. (If the circuit is bypassed, characteristics of twisted wire will be lost.)

CAN Communication Unit

Go to CAN system, when selecting your CAN system type from the following table.

Scheme 132

Scheme 132: CAN Communication Unit

Note. Confirming the presence of the following items helps to identify CAN system type.

Scheme 133

Scheme 134

Scheme 134: TYPE 1/TYPE 2/TYPE 3

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Type 1
Type 2
Type 3

Scheme 139

Scheme 139: TYPE 4/TYPE 5/TYPE 6

Scheme 140

Scheme 141

Scheme 142

Scheme 143

Type 4
Type 5
Type 6

Scheme 144

Scheme 144: TYPE 7/TYPE 8/TYPE 9/TYPE 10

Scheme 145

Scheme 146

Scheme 147

Scheme 148

Scheme 149

Scheme 150

Type 7
Type 8
Type 9
Type 10

Scheme 151

Scheme 151: TYPE 11/TYPE 12/TYPE 13

Scheme 152

Scheme 153

Scheme 154

Scheme 155

Scheme 156

Type 11
Type 12
Type 13

Scheme 157

Scheme 157: TYPE 14/TYPE 15

Type 14
Type 15

Scheme 158

Scheme 159

Scheme 160

CHECK SHEET RESULTS (EXAMPLE)

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Case 1

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 161

Scheme 161: Case 1

Scheme 162

Case 2

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 163

Scheme 163: Case 2

Scheme 164

Case 3

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 165

Scheme 165: Case 3

Scheme 166

Case 4

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 167

Scheme 167: Case 4

Scheme 168

Case 5

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 169

Scheme 169: Case 5

Scheme 170

Case 6

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 171

Scheme 171: Case 6

Scheme 172

Case 7

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 173

Scheme 173: Case 7

Scheme 174

Case 8

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 175

Scheme 175: Case 8

Scheme 176

Case 9

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 177

Scheme 177: Case 9

Case 10

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 178

Scheme 178: Case 10

Case 11

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 179

Scheme 179: Case 11

Scheme 180

Scheme 180: Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 6 (L) - 20 (L): Continuity should exist. 14 (P) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S19455205822006052600000) . NG: Repair harness.

Scheme 181

Scheme 181: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 182

Scheme 182: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 183

Scheme 183: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S19455205822006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 184

Scheme 184: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 185

Scheme 185: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 186

Scheme 186: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 187

Scheme 187: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 188

Scheme 188: CAN Communication Circuit Check

Scheme 189

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display unit Unified meter and A/C amp. BCM (Body control module) ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S31080379502006052600000) . NG: Repair the harness.

IPDM E/R Ignition Relay Circuit Check

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/ OR START»(ref-233661-S21885615982006052600000) .

Scheme 190

Scheme 190: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 191

Scheme 191: Case 1

Scheme 192

Check harness between driver seat control unit and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DRIVER SEAT CONTROL UNIT AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 193

Scheme 193: Case 2

Scheme 194

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 195

Scheme 195: Case 3

Scheme 196

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 197

Scheme 197: Case 4

Scheme 198

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 199

Scheme 199: Case 5

Scheme 200

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 201

Scheme 201: Case 6

Scheme 202

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 203

Scheme 203: Case 7

Scheme 204

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 205

Scheme 205: Case 8

Scheme 206

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 207

Scheme 207: Case 9

Scheme 208

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 209

Scheme 209: Case 10

Scheme 210

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 211

Scheme 211: Case 11

Case 12

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 212

Scheme 212: Case 12

Case 13

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 213

Scheme 213: Case 13

Scheme 214

Scheme 214: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: REPAIR OR REPLACE AS NECESSARY.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) - 19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S24626155042006052600000) . NG: Repair harness.

Scheme 215

Scheme 215: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S24626155042006052600000) . NG: Repair harness.

Scheme 216

Scheme 216: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 217

Scheme 217: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 218

Scheme 218: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S24626155042006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 219

Scheme 219: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 220

Scheme 220: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 221

Scheme 221: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 222

Scheme 222: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 223

Scheme 223: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 224

Scheme 224: CAN Communication Circuit Check

Scheme 225

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S26254611692006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY - IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 226

Scheme 226: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 227

Scheme 227: Case 1

Scheme 228

Scheme 229

Scheme 229: Case 2

Scheme 230

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 231

Scheme 231: Case 3

Scheme 232

Check display control unit circuit. Refer to DISPLAY CONTROL UNIT CIRCUIT CHECK .

Scheme 233

Scheme 233: Case 4

Scheme 234

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 235

Scheme 235: Case 5

Scheme 236

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 237

Scheme 237: Case 6

Scheme 238

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 239

Scheme 239: Case 7

Scheme 240

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 241

Scheme 241: Case 8

Scheme 242

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 243

Scheme 243: Case 9

Scheme 244

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 245

Scheme 245: Case 10

Scheme 246

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 247

Scheme 247: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 248

Scheme 248: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK

Scheme 249

Scheme 249: Case 13

Scheme 250

Scheme 250: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) - 19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22383124112006052600000) . NG: Repair harness.

Scheme 251

Scheme 251: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

Connector Inspection Turn Ignition Switch Off. Disconnect The Negative Battery Terminal. Disconnect Driver Seat Control Unit Connector P2, ABS Actuator And Electric Unit (Control Unit) Connector E125 And ECM Connector M82. Check The Terminals For Deformation, Disconnection, Looseness Or Damage. OK Or NG OK: Go To 2 . NG: Repair Or Replace As Necessary.
Check Harness For Open Circuit Check Continuity Between Driver Seat Control Unit Connector P2 Terminals 3 (Br), 19 (Y/G) And ABS Actuator And Electric Unit (Control Unit) Connector E125 Terminals 20 (L), 23 (P). 3 (Br) - 20 (L): Continuity Should Exist. 19 (Y/G) - 23 (P): Continuity Should Exist. OK Or NG OK: Connect All Connectors And Diagnose Again. Refer To «WORK FLOW»(ref-233663-S22383124112006052600000) . NG: Repair Harness.

Scheme 252

Scheme 252: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 253

Scheme 253: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 254

Scheme 254: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S22383124112006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 255

Scheme 255: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 256

Scheme 256: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 257

Scheme 257: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 258

Scheme 258: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 259

Scheme 259: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 260

Scheme 260: CAN Communication Circuit Check

Scheme 261

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display control unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S27995011512006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 262

Scheme 262: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 263

Scheme 263: Case 1

Scheme 264

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 265

Scheme 265: Case 2

Scheme 266

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 267

Scheme 267: Case 3

Scheme 268

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 269

Scheme 269: Case 4

Scheme 270

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 271

Scheme 271: Case 5

Scheme 272

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 273

Scheme 273: Case 6

Scheme 274

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 275

Scheme 275: Case 7

Scheme 276

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 277

Scheme 277: Case 8

Scheme 278

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 279

Scheme 279: Case 9

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 280

Scheme 280: Case 10

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 281

Scheme 281: Case 11

Scheme 282

Scheme 282: Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 6 (L) - 20 (L): Continuity should exist. 14 (P) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22168208292006052600000) . NG: Repair harness.

Scheme 283

Scheme 283: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 284

Scheme 284: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 285

Scheme 285: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S22168208292006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 286

Scheme 286: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 287

Scheme 287: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 288

Scheme 288: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 289

Scheme 289: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 290

Scheme 290: CAN Communication Circuit Check

Scheme 291

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display unit Unified meter and A/C amp. BCM (Body control module) ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S23810800722006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY - IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 292

Scheme 292: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 293

Scheme 293: Case 1

Scheme 294

Scheme 295

Scheme 295: Case 2

Scheme 296

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 297

Scheme 297: Case 3

Scheme 298

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 299

Scheme 299: Case 4

Scheme 300

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 301

Scheme 301: Case 5

Scheme 302

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 303

Scheme 303: Case 6

Scheme 304

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 305

Scheme 305: Case 7

Scheme 306

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 307

Scheme 307: Case 8

Scheme 308

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 309

Scheme 309: Case 9

Scheme 310

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 311

Scheme 311: Case 10

Scheme 312

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 313

Scheme 313: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 314

Scheme 314: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 315

Scheme 315: Case 13

Scheme 316

Scheme 316: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR) : Continuity should exist. 14 (P) -19 (Y/G) : Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S38678877892006052600000) . NG: Repair harness.

Scheme 317

Scheme 317: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S38678877892006052600000) . NG: Repair harness.

Scheme 318

Scheme 318: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 319

Scheme 319: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 320

Scheme 320: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S38678877892006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 321

Scheme 321: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 322

Scheme 322: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 323

Scheme 323: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 324

Scheme 324: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 325

Scheme 325: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 326

Scheme 326: CAN Communication Circuit Check

Scheme 327

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S06519814652006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) ".
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY - IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 328

Scheme 328: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 329

Scheme 329: Case 1

Scheme 330

Scheme 331

Scheme 331: Case 2

Scheme 332

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 333

Scheme 333: Case 3

Scheme 334

Check display control unit circuit. Refer to DISPLAY CONTROL UNIT CIRCUIT CHECK .

Scheme 335

Scheme 335: Case 4

Scheme 336

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 337

Scheme 337: Case 5

Scheme 338

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 339

Scheme 339: Case 6

Scheme 340

Check BCM circuit. Refer to BCM CIRCUIT CHECK

Scheme 341

Scheme 341: Case 7

Scheme 342

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 343

Scheme 343: Case 8

Scheme 344

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 345

Scheme 345: Case 9

Scheme 346

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 347

Scheme 347: Case 10

Scheme 348

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 349

Scheme 349: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 350

Scheme 350: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 351

Scheme 351: Case 13

Scheme 352

Scheme 352: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) -19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S24499029062006052600000) . NG: Repair harness.

Scheme 353

Scheme 353: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S24499029062006052600000) . NG: Repair harness.

Scheme 354

Scheme 354: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and data link connector M22.

Scheme 355

Scheme 355: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 356

Scheme 356: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S24499029062006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 357

Scheme 357: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 358

Scheme 358: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 359

Scheme 359: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 360

Scheme 360: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 361

Scheme 361: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 362

Scheme 362: CAN Communication Circuit Check

Scheme 363

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM Display control unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S00644372142006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 364

Scheme 364: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94-86: Approx. 108-132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48-49: Approx. 108 - 132

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 365

Scheme 365: Case 1

Scheme 366

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 367

Scheme 367: Case 2

Scheme 368

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 369

Scheme 369: Case 3

Scheme 370

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 371

Scheme 371: Case 4

Scheme 372

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 373

Scheme 373: Case 5

Scheme 374

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 375

Scheme 375: Case 6

Scheme 376

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 377

Scheme 377: Case 7

Scheme 378

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 379

Scheme 379: Case 8

Scheme 380

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 381

Scheme 381: Case 9

Scheme 382

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 383

Scheme 383: Case 10

Scheme 384

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 385

Scheme 385: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 386

Scheme 386: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 387

Scheme 387: Case 13

Scheme 388

Scheme 388: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S39219661902006052600000) . NG: Repair harness.

Scheme 389

Scheme 389: Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 6 (L) - 20 (L): Continuity should exist. 14 (P) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S39219661902006052600000) . NG: Repair harness.

Scheme 390

Scheme 390: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 391

Scheme 391: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 392

Scheme 392: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 393

Scheme 393: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S39219661902006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 394

Scheme 394: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 395

Scheme 395: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 396

Scheme 396: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 397

Scheme 397: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 398

Scheme 398: CAN Communication Circuit Check

Scheme 399

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display unit Unified meter and A/C amp. BCM (Body control module) ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S22086636582006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 400

Scheme 400: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 401

Scheme 401: Case 1

Scheme 402

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 403

Scheme 403: Case 2

Scheme 404

Scheme 405

Scheme 405: Case 3

Scheme 406

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 407

Scheme 407: Case 4

Scheme 408

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 409

Scheme 409: Case 5

Scheme 410

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 411

Scheme 411: Case 6

Scheme 412

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 413

Scheme 413: Case 7

Scheme 414

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 415

Scheme 415: Case 8

Scheme 416

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 417

Scheme 417: Case 9

Scheme 418

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 419

Scheme 419: Case 10

Scheme 420

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 421

Scheme 421: Case 11

Scheme 422

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 423

Scheme 423: Case 12

Scheme 424

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 425

Scheme 425: Case 13

Case 14

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 426

Scheme 426: Case 14

Case 15

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 427

Scheme 427: Case 15

Scheme 428

Scheme 428: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S15350041912006052600000) . NG: Repair harness.

Scheme 429

Scheme 429: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) - 19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S15350041912006052600000) . NG: Repair harness.

Scheme 430

Scheme 430: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S15350041912006052600000) . NG: Repair harness.

Scheme 431

Scheme 431: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 432

Scheme 432: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 433

Scheme 433: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 434

Scheme 434: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S15350041912006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 435

Scheme 435: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 436

Scheme 436: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 437

Scheme 437: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 438

Scheme 438: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 439

Scheme 439: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 440

Scheme 440: CAN Communication Circuit Check

Scheme 441

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S38768098582006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 442

Scheme 442: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94-86: Approx. 108-132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48-49: Approx. 108 -132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 443

Scheme 443: Case 1

Scheme 444

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 445

Scheme 445: Case 2

Scheme 446

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 447

Scheme 447: Case 3

Scheme 448

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 449

Scheme 449: Case 4

Scheme 450

Check display control unit circuit. Refer to DISPLAY CONTROL UNIT CIRCUIT CHECK .

Scheme 451

Scheme 451: Case 5

Scheme 452

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 453

Scheme 453: Case 6

Scheme 454

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 455

Scheme 455: Case 7

Scheme 456

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 457

Scheme 457: Case 8

Scheme 458

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 459

Scheme 459: Case 9

Scheme 460

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 461

Scheme 461: Case 10

Scheme 462

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 463

Scheme 463: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 464

Scheme 464: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 465

Scheme 465: Case 13

Scheme 466

Scheme 466: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S05016104772006052600000) . NG: Repair harness.

Scheme 467

Scheme 467: Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 6 (L) - 20 (L): Continuity should exist. 14 (P) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S05016104772006052600000) . NG: Repair harness.

Scheme 468

Scheme 468: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 469

Scheme 469: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 470

Scheme 470: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 471

Scheme 471: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S05016104772006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 472

Scheme 472: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 473

Scheme 473: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 474

Scheme 474: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 475

Scheme 475: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 476

Scheme 476: CAN Communication Circuit Check

Scheme 477

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display control unit Unified meter and A/C amp. BCM (Body control module) ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S34821717932006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 478

Scheme 478: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 479

Scheme 479: Case 1

Scheme 480

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 481

Scheme 481: Case 2

Scheme 482

Scheme 483

Scheme 483: Case 3

Scheme 484

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 485

Scheme 485: Case 4

Scheme 486

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 487

Scheme 487: Case 5

Scheme 488

Check display control unit circuit. Refer to DISPLAY CONTROL UNIT CIRCUIT CHECK .

Scheme 489

Scheme 489: Case 6

Scheme 490

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 491

Scheme 491: Case 7

Scheme 492

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 493

Scheme 493: Case 8

Scheme 494

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 495

Scheme 495: Case 9

Scheme 496

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 497

Scheme 497: Case 10

Scheme 498

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 499

Scheme 499: Case 11

Scheme 500

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 501

Scheme 501: Case 12

Scheme 502

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 503

Scheme 503: Case 13

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 504

Scheme 504: Case 14

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 505

Scheme 505: Case 15

Scheme 506

Scheme 506: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) -14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S01951479192006052600000) . NG: Repair harness.

Scheme 507

Scheme 507: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) -19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S01951479192006052600000) . NG: Repair harness.

Scheme 508

Scheme 508: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S01951479192006052600000) . NG: Repair harness.

Scheme 509

Scheme 509: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 510

Scheme 510: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 511

Scheme 511: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 512

Scheme 512: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S01951479192006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 513

Scheme 513: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 514

Scheme 514: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 515

Scheme 515: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 516

Scheme 516: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 517

Scheme 517: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 518

Scheme 518: CAN Communication Circuit Check

Scheme 519

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display control unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S04092272162006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 520

Scheme 520: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 521

Scheme 521: Case 1

Scheme 522

Check harness between data link connector and ABS actuator and electric unit (control unit). Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) .

Scheme 523

Scheme 523: Case 2

Scheme 524

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 525

Scheme 525: Case 3

Scheme 526

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 527

Scheme 527: Case 4

Scheme 528

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 529

Scheme 529: Case 5

Scheme 530

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 531

Scheme 531: Case 6

Scheme 532

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 533

Scheme 533: Case 7

Scheme 534

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 535

Scheme 535: Case 8

Scheme 536

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 537

Scheme 537: Case 9

Scheme 538

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 539

Scheme 539: Case 10

Scheme 540

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 541

Scheme 541: Case 11

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 542

Scheme 542: Case 12

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 543

Scheme 543: Case 13

Scheme 544

Scheme 544: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S18592142962006052600000) . NG: Repair harness.

Scheme 545

Scheme 545: Circuit Check Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 6 (L) - 20 (L): Continuity should exist. 14 (P) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S18592142962006052600000) . NG: Repair harness.

Scheme 546

Scheme 546: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 547

Scheme 547: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 548

Scheme 548: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 549

Scheme 549: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S18592142962006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 550

Scheme 550: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 551

Scheme 551: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 552

Scheme 552: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 553

Scheme 553: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 554

Scheme 554: CAN Communication Circuit Check

Scheme 555

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display unit Unified meter and A/C amp. BCM (Body control module) ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S19535057012006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 556

Scheme 556: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 557

Scheme 557: Case 1

Scheme 558

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 559

Scheme 559: Case 2

Scheme 560

Scheme 561

Scheme 561: Case 3

Scheme 562

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 563

Scheme 563: Case 4

Scheme 564

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 565

Scheme 565: Case 5

Scheme 566

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 567

Scheme 567: Case 6

Scheme 568

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 569

Scheme 569: Case 7

Scheme 570

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 571

Scheme 571: Case 8

Scheme 572

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 573

Scheme 573: Case 9

Scheme 574

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 575

Scheme 575: Case 10

Scheme 576

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 577

Scheme 577: Case 11

Scheme 578

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 579

Scheme 579: Case 12

Scheme 580

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 581

Scheme 581: Case 13

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 582

Scheme 582: Case 14

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 583

Scheme 583: Case 15

Scheme 584

Scheme 584: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L) : Continuity should exist. 4 (P) -14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S31965200962006052600000) . NG: Repair harness.

Scheme 585

Scheme 585: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6(L)-3(BR): Continuity should exist. 14 (P) -19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S31965200962006052600000) . NG: Repair harness.

Scheme 586

Scheme 586: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L): Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S31965200962006052600000) . NG: Repair harness.

Scheme 587

Scheme 587: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 588

Scheme 588: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 589

Scheme 589: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 590

Scheme 590: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S31965200962006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 591

Scheme 591: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 592

Scheme 592: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 593

Scheme 593: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 594

Scheme 594: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 595

Scheme 595: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 596

Scheme 596: CAN Communication Circuit Check

Scheme 597

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S33102079902006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 598

Scheme 598: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 599

Scheme 599: Case 1

Scheme 600

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 601

Scheme 601: Case 2

Scheme 602

Scheme 603

Scheme 603: Case 3

Scheme 604

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 605

Scheme 605: Case 4

Scheme 606

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 607

Scheme 607: Case 5

Scheme 608

Check display control unit circuit. Refer to DISPLAY CONTROL UNIT CIRCUIT CHECK .

Scheme 609

Scheme 609: Case 6

Scheme 610

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 611

Scheme 611: Case 7

Scheme 612

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 613

Scheme 613: Case 8

Scheme 614

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 615

Scheme 615: Case 9

Scheme 616

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 617

Scheme 617: Case 10

Scheme 618

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 619

Scheme 619: Case 11

Scheme 620

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 621

Scheme 621: Case 12

Scheme 622

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 623

Scheme 623: Case 13

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 624

Scheme 624: Case 14

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 625

Scheme 625: Case 15

Scheme 626

Scheme 626: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L) : Continuity should exist. 4 (P) -14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22663580572006052600000) . NG: Repair harness.

Scheme 627

Scheme 627: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR),19 (Y/G). 6 (L) - 3 (BR) : Continuity should exist. 14 (P) -19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22663580572006052600000) . NG: Repair harness.

Scheme 628

Scheme 628: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 20 (L), 23 (P). 3 (BR) - 20 (L) : Continuity should exist. 19 (Y/G) - 23 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22663580572006052600000) . NG: Repair harness.

Scheme 629

Scheme 629: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 630

Scheme 630: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 631

Scheme 631: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 632

Scheme 632: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S22663580572006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 633

Scheme 633: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 634

Scheme 634: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 635

Scheme 635: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 636

Scheme 636: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 20 (L) and terminal 23 (P). 20 (L) - 23 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 637

Scheme 637: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 638

Scheme 638: CAN Communication Circuit Check

Scheme 639

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display control unit Unified meter and A/C amp. BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S06663052602006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 640

Scheme 640: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 641

Scheme 641: Case 1

Scheme 642

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 643

Scheme 643: Case 2

Scheme 644

Scheme 645

Scheme 645: Case 3

Scheme 646

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 647

Scheme 647: Case 4

Scheme 648

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 649

Scheme 649: Case 5

Scheme 650

Check display unit circuit. Refer to DISPLAY UNIT CIRCUIT CHECK .

Scheme 651

Scheme 651: Case 6

Scheme 652

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 653

Scheme 653: Case 7

Scheme 654

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 655

Scheme 655: Case 8

Scheme 656

Check steering angle sensor circuit. Refer to STEERING ANGLE SENSOR CIRCUIT CHECK .

Scheme 657

Scheme 657: Case 9

Scheme 658

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 659

Scheme 659: Case 10

Scheme 660

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 661

Scheme 661: Case 11

Scheme 662

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 663

Scheme 663: Case 12

Scheme 664

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 665

Scheme 665: Case 13

Scheme 666

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 667

Scheme 667: Case 14

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 668

Scheme 668: Case 15

Case 16

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 669

Scheme 669: Case 16

Scheme 670

Scheme 670: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22935491532006052600000) . NG: Repair harness.

Scheme 671

Scheme 671: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) - 19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22935491532006052600000) . NG: Repair harness.

Scheme 672

Scheme 672: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 7 (L), 9 (P). 3 (BR) - 7 (L): Continuity should exist. 19 (Y/G) - 9 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S22935491532006052600000) ". NG: Repair harness.

Scheme 673

Scheme 673: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 674

Scheme 674: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 675

Scheme 675: Display Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display unit connector M93. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display unit connector M93 terminal 14 (L) and terminal 16 (P). 14 (L) - 16 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display unit. NG: Repair harness between display unit connector M93 and data link connector M22.

Scheme 676

Scheme 676: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S22935491532006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 677

Scheme 677: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp connector M49 and data link connector M22.

Scheme 678

Scheme 678: Steering Angle Sensor Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect steering angle sensor connector M47. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between steering angle sensor connector M47 terminal 4 (L) and terminal 5 (P). 4 (L) - 5 (P): Approx. 54 - 66 ohm OK or NG OK: Replace steering angle sensor. NG: Repair harness between steering angle sensor connector M47 and data link connector M22.

Scheme 679

Scheme 679: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 680

Scheme 680: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 681

Scheme 681: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 7 (L) and terminal 9 (P). 7 (L) - 9 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 682

Scheme 682: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 683

Scheme 683: CAN Communication Circuit Check

Scheme 684

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display unit Unified meter and A/C amp. Steering angle sensor BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S38046787592006052600000) NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 685

Scheme 685: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Note. If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" or "CAN COMM" for the diagnosed control unit, replace the control unit.

Check harness between TCM and data link connector. Refer to CIRCUIT CHECK BETWEEN TCM AND DATA LINK CONNECTOR .

Scheme 686

Scheme 686: Case 1

Scheme 687

Check harness between data link connector and driver seat control unit. Refer to CIRCUIT CHECK BETWEEN DATA LINK CONNECTOR AND DRIVER SEAT CONTROL UNIT .

Scheme 688

Scheme 688: Case 2

Scheme 689

Scheme 690

Scheme 690: Case 3

Scheme 691

Check ECM circuit. Refer to ECM CIRCUIT CHECK .

Scheme 692

Scheme 692: Case 4

Scheme 693

Check TCM circuit. Refer to TCM CIRCUIT CHECK .

Scheme 694

Scheme 694: Case 5

Scheme 695

Check display control unit circuit. Refer to , " DISPLAY CONTROL UNIT CIRCUIT CHECK ".

Scheme 696

Scheme 696: Case 6

Scheme 697

Check data link connector circuit. Refer to DATA LINK CONNECTOR CIRCUIT CHECK .

Scheme 698

Scheme 698: Case 7

Scheme 699

Check unified meter and A/C amp. circuit. Refer to UNIFIED METER AND A/C AMP. CIRCUIT CHECK .

Scheme 700

Scheme 700: Case 8

Scheme 701

Check steering angle sensor circuit. Refer to STEERING ANGLE SENSOR CIRCUIT CHECK .

Scheme 702

Scheme 702: Case 9

Scheme 703

Check BCM circuit. Refer to BCM CIRCUIT CHECK .

Scheme 704

Scheme 704: Case 10

Scheme 705

Check driver seat control unit circuit. Refer to DRIVER SEAT CONTROL UNIT CIRCUIT CHECK .

Scheme 706

Scheme 706: Case 11

Scheme 707

Check ABS actuator and electric unit (control unit) circuit. Refer to ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) CIRCUIT CHECK .

Scheme 708

Scheme 708: Case 12

Scheme 709

Check IPDM E/R circuit. Refer to IPDM E/R CIRCUIT CHECK .

Scheme 710

Scheme 710: Case 13

Scheme 711

Check CAN communication circuit. Refer to CAN COMMUNICATION CIRCUIT CHECK .

Scheme 712

Scheme 712: Case 14

Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 713

Scheme 713: Case 15

Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to IPDM E/R IGNITION RELAY CIRCUIT CHECK .

Scheme 714

Scheme 714: Case 16

Scheme 715

Scheme 715: Circuit Check Between TCM and Data Link Connector

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between TCM connector F56 terminals 3 (L), 4 (P) and data link connector M22 terminals 6 (L), 14 (P). 3 (L) - 6 (L): Continuity should exist. 4 (P) - 14 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S00354499102006052600000) . NG: Repair harness.

Scheme 716

Scheme 716: Circuit Check Between Data Link Connector and Driver Seat Control Unit

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between data link connector M22 terminals 6 (L), 14 (P) and driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G). 6 (L) - 3 (BR): Continuity should exist. 14 (P) - 19 (Y/G): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S00354499102006052600000) . NG: Repair harness.

Scheme 717

Scheme 717: Circuit Check Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit)

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2, ABS actuator and electric unit (control unit) connector E125 and ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check continuity between driver seat control unit connector P2 terminals 3 (BR), 19 (Y/G) and ABS actuator and electric unit (control unit) connector E125 terminals 7 (L), 9 (P). 3 (BR) - 7 (L): Continuity should exist. 19 (Y/G) - 9 (P): Continuity should exist. OK or NG OK: Connect all connectors and diagnose again. Refer to «WORK FLOW»(ref-233663-S00354499102006052600000) . NG: Repair harness.

Scheme 718

Scheme 718: ECM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ECM connector M82. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ECM connector M82 terminal 94 (L) and terminal 86 (P). 94 (L) - 86 (P): Approx. 108 - 132 ohm OK or NG OK: Replace ECM. NG: Repair harness between ECM connector M82 and TCM connector F56.

Scheme 719

Scheme 719: TCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect TCM connector F56. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between TCM connector F56 terminal 3 (L) and terminal 4 (P). 3 (L) - 4 (P): Approx. 54 - 66 ohm OK or NG OK: Replace TCM. NG: Repair harness between TCM connector F56 and ECM connector M82.

Scheme 720

Scheme 720: Display Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect display control unit connector M95. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between display control unit connector M95 terminal 25 (L) and terminal 26 (P). 25 (L) - 26 (P): Approx. 54 - 66 ohm OK or NG OK: Replace display control unit. NG: Repair harness between display control unit connector M95 and data link connector M22.

Scheme 721

Scheme 721: Data Link Connector Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Check data link connector M22 terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between data link connector M22 terminal 6 (L) and terminal 14 (P). 6 (L) - 14 (P): Approx. 54 - 66 ohm OK or NG OK: Diagnose again. Refer to «WORK FLOW»(ref-233663-S00354499102006052600000) . NG: Repair harness between data link connector M22 and BCM connector M18.

Scheme 722

Scheme 722: Unified Meter and A/C Amp. Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect unified meter and A/C amp. connector M49. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between unified meter and A/C amp. connector M49 terminal 1 (L) and terminal 11 (P). 1 (L) - 11 (P): Approx. 54 - 66 ohm OK or NG OK: Replace unified meter and A/C amp. NG: Repair harness between unified meter and A/C amp. connector M49 and data link connector M22.

Scheme 723

Scheme 723: Steering Angle Sensor Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect steering angle sensor connector M47. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between steering angle sensor connector M47 terminal 4 (L) and terminal 5 (P). 4 (L) - 5 (P): Approx. 54 - 66 ohm OK or NG OK: Replace steering angle sensor. NG: Repair harness between steering angle sensor connector M47 and data link connector M22.

Scheme 724

Scheme 724: BCM Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect BCM connector M18. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between BCM connector M18 terminal 39 (L) and terminal 40 (P). 39 (L) - 40 (P): Approx. 54 - 66 ohm OK or NG OK: Replace BCM. NG: Repair harness between BCM connector M18 and data link connector M22.

Scheme 725

Scheme 725: Driver Seat Control Unit Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect driver seat control unit connector P2. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between driver seat control unit connector P2 terminal 3 (BR) and terminal 19 (Y/G). 3 (BR) - 19 (Y/G): Approx. 54 - 66 ohm OK or NG OK: Replace driver seat control unit. NG: Repair harness between driver seat control unit connector P2 and data link connector M22.

Scheme 726

Scheme 726: ABS Actuator and Electric Unit (Control Unit) Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect ABS actuator and electric unit (control unit) connector E125. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between ABS actuator and electric unit (control unit) connector E125 terminal 7 (L) and terminal 9 (P). 7 (L) - 9 (P): Approx. 54 - 66 ohm OK or NG OK: Replace ABS actuator and electric unit (control unit). NG: Repair harness between ABS actuator and electric unit (control unit) connector E125 and IPDM E/R connector E121.

Scheme 727

Scheme 727: IPDM E/R Circuit Check

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect IPDM E/R connector E121. Check the terminals for deformation, disconnection, looseness or damage. OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR OPEN CIRCUIT Check resistance between IPDM E/R connector E121 terminal 48 (L) and terminal 49 (P). 48 (L) - 49 (P): Approx. 108 - 132 ohm OK or NG OK: Replace IPDM E/R. NG: Repair harness between IPDM E/R connector E121 and ABS actuator and electric unit (control unit) connector E125.

Scheme 728

Scheme 728: CAN Communication Circuit Check

Scheme 729

CONNECTOR INSPECTION Turn ignition switch OFF. Disconnect the negative battery terminal. Disconnect the following module and control unit connectors and check terminals for deformation, disconnection, looseness or damage. ECM TCM (Transmission control module) Display control unit Unified meter and A/C amp. Steering angle sensor BCM (Body control module) Driver seat control unit ABS actuator and electric unit (control unit) IPDM E/R (Intelligent power distribution module engine room) OK or NG OK: GO TO 2 . NG: Repair or replace as necessary.
CHECK HARNESS FOR SHORTED CIRCUITS With all module and control unit connectors disconnected, check continuity between data link connector M22 terminals 6 (L) and 14 (P). 6 (L) - 14 (P): Continuity should not exist. OK or NG OK: GO TO 3 . NG: Repair the harness.
CHECK HARNESS FOR SHORT TO GROUND Check continuity between data link connector M22 terminals 6 (L), 14 (P) and ground. 6 (L) - Ground: Continuity should not exist. 14 (P) - Ground: Continuity should not exist. OK or NG OK: Check ECM and IPDM E/R. Refer to «COMPONENT INSPECTION»(ref-233663-S00305586902006052600000) . NG: Repair the harness.

Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to «IPDM E/R POWER/GROUND CIRCUIT INSPECTION»(ref-233661-S20403786482006052600000) .
Ignition power supply circuit. Refer to «IGNITION POWER SUPPLY-IGNITION SW. IN ON AND/OR START»(ref-233661-S21885615982006052600000) .

Scheme 730

Scheme 730: ECM AND IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86. 94 - 86: Approx. 108 - 132 ohm
Check resistance between IPDM E/R terminals 48 and 49. 48 - 49: Approx. 108 - 132 ohm

Lan System: Other Nissan Maxima A34

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

Precautions When Using CONSULT-II

CHECK POINTS FOR USING CONSULT-II

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CAN Communication Unit

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CHECK SHEET RESULTS (EXAMPLE)

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Case 3

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Case 6

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Case 11

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IPDM E/R Ignition Relay Circuit Check

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