CAN Communication System - Diagnostics: Other Toyota Matrix E130

SYSTEM DIAGRAM

HINT

The skid control ECU stores DTCs and performs DTC communication by receiving information from the steering sensor and yaw rate sensor. These sensors cannot store DTCs or perform DTC communication.

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CUSTOMER PROBLEM ANALYSIS CHECK

CAN Communication System Check Sheet

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1. DLC3 Check DLC3. Measure the resistance according to the value(s) in the table below. DLC3 CHART Terminals Terminal Description Condition Specified value D1-6 (CANH) - D1-14 (CANL) HIGH-level CAN bus line - LOW-level CAN bus line IG switch OFF 54 to 69 a D1-6 (CANH) - D1-16 (BAT) HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher D1-14 (CANL) - D1-16 (BAT) LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher D1-6(CANH)-D1-4(CG) HIGH-level CAN bus line-Ground IG switch OFF 3 kohm or higher D1-14(CANL)-D1-4(CG) LOW-level CAN bus line -Ground IG switch OFF 3 kohm or higher
2. SKID CONTROL ECU Check skid control ECU. Disconnect the connector (S1) from the skid control ECU. Measure the resistance according to the value(s) in the table below. SKID CONTROL ECU CHART (1 OF 2) Terminals Terminal Description Condition Specified value 11 (CANH) - 25 (CANL) HIGH-level CAN bus line - LOW-level CAN bus line IG switch OFF 108 to 132 ohm 11 (CANH)-32(GND1) HIGH-level CAN bus line -Ground IG switch OFF 3 kohm or higher 25(CANL)-32(GND1) LOW-level CAN bus line - Ground IG switch OFF 3 kohm or higher 11 (CANH) -31 (+BS) HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher 25 (CANL) -31 (+BS) LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher Check the skid control ECU harness side connector (S1). Disconnect the connector (S1) from the skid control ECU. Measure the resistance according to the value(s) in the table below. SKID CONTROL ECU CHART (2 OF 2) Terminals Wiring Color Terminal Description Condition Specified value S1-11 (CANH)-S1-25(CANL) B-W HIGH-level CAN bus line-LOW-level CAN bus line IG switch OFF 108 to 132 ohm S1-11 (CANH)-S1-32(GND1) B-W-B HIGH-level CAN bus line - Ground IG switch OFF 3 kohm or higher S1-25 (CANL) -S1-32 (GND1) W-W-B LOW-level CAN bus line - Ground IG switch OFF 3 kohm or higher S1-11 (CANH)-S1-31 (+BS) B-B HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher S1-25(CANL)-S1-31 (+BS) W-B LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher
3. STEERING SENSOR Check steering sensor. Disconnect the connector (S12) from the steering sensor. Measure the resistance according to the value(s) in the table below. STEERING SENSOR CHART (1 OF 2) Terminals Terminal Description Condition Specified value 10 (CANH) -9 (CANL) HIGH-level CAN bus line - LOW-level CAN bus line IG switch OFF 108 to 132 ohm 10 (CANH) -2 (ESS) HIGH-level CAN bus line - Ground IG switch OFF 3 kohm or higher 9 (CANL) -2 (ESS) LOW-level CAN bus line - Ground IG switch OFF 3 kohm or higher 10 (CANH) -3 (BAT) HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher 9 (CANL) - 3 (BAT) LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher Check the harness side connector (S12) of the steering sensor. Disconnect the connector (S12) from the steering sensor. Measure the resistance according to the value(s) in the table below. STEERING SENSOR CHART (2 OF 2) Terminals Wiring Color Terminal Description Condition Specified value S12-10 (CANH) - S12-9 (CANL) B-W HIGH-level CAN bus line - LOW-level CAN bus line IG switch OFF 108 to 132ohm S12-1 0 (CANH) - S1 2-2 (ESS) B-W-B HIGH-level CAN bus line - Ground IG switch OFF 3 kohm or higher S12-9 (CANL) - S12-2 (ESS) W-W-B LOW-level CAN bus line - Ground IG switch OFF 3 kohm or higher S1 2-1 0 (CANH) - S1 2-3 (BAT) B-R-B HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher S12-9 (CANL) - S12-3 (BAT) W-R-B LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher
4. YAW RATE SENSOR Check the yaw rate sensor harness side connector (Y1). Disconnect the connector (Y1) from the yaw rate sensor. Measure the resistance according to the value(s) in the table below. YAW RATE SENSOR Terminals Wiring Color Terminal Description Condition Specified value Y1-3 (CANH)-Y1-2 (CANL) B-W HIGH-level CAN bus line - LOW-level CAN bus line IG switch OFF 54 to 69 ohm Y1-3(CANH)-Y1-1 (GND) B-W-B HIGH-level CAN bus line - Ground IG switch OFF 3 kohm or higher Y1-2(CANL)-Y1-1(GND) W-W-B LOW-level CAN bus line - Ground IG switch OFF 3 kohm or higher Y1-3 (CANH) - D1-16 (BAT) B-R-B HIGH-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher Y1-2 (CANL) - D1-16 (BAT) W-R-B LOW-level CAN bus line - Battery positive IG switch OFF 1 Mohm or higher
5. JUNCTION CONNECTOR (J13) Terminal arrangement and connection JUNCTION CONNECTOR (J13) Terminals Connects to J1 3-4 (CANH) Skid Control ECU (CANH) J13-15 (CANL) Skid Control ECU (CANL) J13-5 (CANH) Yaw Rate Sensor (CAN-H) J13-16 (CANL) Yaw Rate Sensor (CAN-L) J13-6 (CANH) Steering Sensor (CANH) J13-17 (CANL) Steering Sensor (CANL) J13-7 (CANH) DLC3 (CANH) J13-18 (CANL) DLC3 (CANL)

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1. DTC COMBINATION TABLE NOTE: Complete "CHECK CAN BUS LINE" (see «CHECK CAN BUS LINE»(ref-225894-S24583713032006032300000) ) to confirm that there is no malfunction in the CAN bus line, and then perform troubleshooting according to the following DTC combination table. Confirm the trouble mode according to the combination of output DTCs. HINT: DTC U1223 is also output when U0073 or U0124 is output. U0073/94, U0123/62, U0124/95 and U0126/63 are the DTCs in the CAN communication system. The above table shows combinations of these DTCs. O.....DTCs that are being output. -......DTCs that are not being output. Confirm the trouble mode by referring to the above. Then check the parts to be replaced, by referring to the below. DTC detection condition