Smart Access System (Keyless Start) (Diagnostic Codes & Symptom Tests): Overview Lexus IS II facelift

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1. CHECK POWER SOURCE MODE CHANGE FUNCTION Check the function of the engine switch. A/T Models: Check that power source mode changes in accordance with the conditions of the shift position and brake pedal. Brake Pedal Shift Lever Power Source Mode Pattern Depressed P or N Position When the engine switch is pushed once. off --> engine start Not depressed P position Each time the engine switch is pushed. off --> on (ACC) --> on (IG) --> off Except P Position Each time the engine switch is pushed. off --> on (ACC) --> on (IG) --> on (ACC) - P Position When the engine switch is pushed in the on (IG) condition (engine running). on (IG) --> off - Except P Position When the engine switch is pushed in the on (IG) condition (engine running). on (IG) --> on (ACC) M/T Models: Start function has different power source patterns to suit the clutch pedal condition. Clutch Pedal Power Source Mode Pattern Depressed When the engine switch is pushed once. off --> engine start Not depressed Each time the engine switch is pushed. off --> on (ACC) --> on (IG) --> off - When the engine switch is pushed in the on (IG) condition (engine running). on (IG) --> off Check if power source mode changes without pressing the engine switch. A/T Models: With power source mode on (ACC) and the shift position in P, wait for at least 1 hour. Check that power source mode changes from on (ACC) to off automatically. M/T Models: With power source mode on (ACC), wait for at least 1 hour. Check that power source mode changes from on (ACC) to off automatically.
2. CHECK INDICATOR CONDITION Check the indicator on the engine switch. Check that the engine switch indicator turns on and changes color according to the table below. Power Source Mode/Condition Indicator Light Condition Brake pedal released (A/T) Clutch pedal released (M/T) Brake pedal depressed, shift lever in P or N (A/T) Clutch pedal depressed (M/T) off OFF Turns ON (Green) Turns ON (Green) on (ACC, IG) Turns ON (Amber) Turns ON (Green) Turns ON (Green) Engine running OFF OFF OFF Steering lock not unlocked Flashes (Green) for 30 sec. Flashes (Green) for 30 sec. Flashes (Green) for 30 sec. System malfunction Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec. Flashes (Amber) for 15 sec. Clutch start switch malfunction (M/T) Flashes (Green) for 15 sec. Flashes (Green) for 15 sec. Flashes (Green) for 15 sec.

DESCRIPTION

This DTC is output when a problem such as an open in the AM2 fuse, an open or short in the wire harness between the fuse and power source control ECU, a short in the IG output circuit inside the power source control ECU, a short between the power source control ECU and relay, and a short in the relay is detected.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> See step 10 OK: Go to next step
5. INSPECT JUNCTION BLOCK RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - Body ground Always 10 kohms or higher LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher NG --> See step 10 OK: Go to next step
6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Always 10 kohms or higher J55-35 (IG2D) - Body ground Always 10 kohms or higher NG --> See step 11 OK: Go to next step
7. CHECK WIRE HARNESS (COWL SIDE J/B LH - BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - Body ground Always 10 kohms or higher NG --> See step 11 OK: Go to next step
8. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Reconnect the J55 ECU and J/B connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
9. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2271 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
10. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
11. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when there is a problem in the IG1 output circuit, which is from the inside of the power source control ECU to the RH-IG or LH-IG relay.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK JUNCTION BLOCK RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - RD-12 Always Below 1 ohms RD-6 - Body ground Always 10 kohms or higher LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) NG --> See step 8 OK: Go to next step
5. CHECK WIRE HARNESS (COWL SIDE J/B RH - POWER SOURCE CONTROL ECU AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-6 - J55-34 (IG1D) Always Below 1 ohms RA-5 or RD-7 - Body ground Always Below 1 ohms RD-6 or J55-34 (IG1D) - Body ground Always 10 kohms or higher Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms RD-12 - Body ground Always 10 kohms or higher LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Connect each J/B connector with the power source control ECU connector disconnected. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2272 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when there is a problem in the IG2 output circuit, which is from the inside of the power source control ECU to the IG2 relay.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance of the relay. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (when battery voltage is applied to terminals 1 and 2) NG --> See step 8 OK: Go to next step
5. CHECK WIRE HARNESS (ENGINE ROOM R/B NO. 2 - POWER SOURCE CONTROL ECU) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition Engine room R/B No. 2 IG2 relay terminal 2 - J55-35 (IG2D) Always Below 1 ohms Engine room R/B No. 2 IG2 relay terminal 1 - Body ground Always Below 1 ohms Engine room R/B No. 2 IG2 relay terminal 2 or J55-35 (IG2D) - Body ground Always 10 kohms or higher Install the IG2 relay. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2273 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when there is a problem in the ACC output circuit, which is from the inside of the power source control ECU to the ACC or PWR POINT relay.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK COWL SIDE JUNCTION BLOCK RH (ACC RELAY, PWR OUTLET RELAY) Disconnect the RD and RA J/B connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) NG --> See step 8 OK: Go to next step
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - RD-2 Always Below 1 ohms J55-11 (ACCD) - Body ground Always 10 kohms or higher RA-5 - Body ground Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms Connect each J/B connector with the power source control ECU connector disconnected. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch on (IG) Below 1 V NG --> See step 9 OK: Go to next step
6. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2274 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS
8. REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
9. REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

This DTC is output when there is an open, short, or any other problem in the engine start request output circuit inside the power source control ECU or in the external circuit.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). HINT: After all DTCs are cleared, turn the engine switch on (IG). After 25 seconds have elapsed, check if the trouble occurs again. Check for DTCs again. OK DTC B2285 is not output. HINT: If DTC B2285 is output, perform troubleshooting for DTC B2285 first. Refer to «DTC B2285: Steering Lock Position Signal Circuit Malfunction»(ref-387397-S38439293082011022400000). NG --> GO TO DTC CHART OK: Go to next step
2. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - A5-19 (STSW) Always Below 1 ohms J55-39 (STSW) or A5-19 (STSW) - Body ground Always 10 kohms or higher Reconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - Body ground Always Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK WIRE HARNESS (STEERING LOCK ECU - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J29-1 (GND) - Body ground Always Below 1 ohms J29-4 (SLP1) - J55-26 (SLP) Always Below 1 ohms J29-4 (SLP1) or J55-26 (SLP) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV, 100 ms/DIV Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
8. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV, 100 ms/DIV Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK: Go to next step
9. INSPECT POWER SOURCE CONTROL ECU Disconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-39 (STSW) - Body ground Brake pedal (A/T) or clutch pedal (M/T) depressed, Engine switch off Below 1 V Brake pedal (A/T) or clutch pedal (M/T) depressed, Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE ECM

This DTC is output when the ACCR output circuits inside the power source control ECU are open or short.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A5 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-31 (CTSW) - A5-11 (ACCR) Always Below 1 ohms J55-31 (CTSW) or A5-11 (ACCR) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT ECM Reconnect the A5 ECM connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-31 (CTSW) - Body ground Always 8 to 14 V NG --> REPLACE ECM OK: Go to next step
5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Terminal No. (Symbol) Condition Specified condition J55-31 (CTSW) - Body ground Brake pedal depressed (A/T) or Clutch pedal depressed (M/T), Engine switch on (ST) 0.1 to 0.8 V (*1) HINT: *1: Voltage is output only when the engine is cranking. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS

This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

This DTC is output when 1) a malfunction is detected between the power source control ECU and the engine switch; or 2) either of the switches inside the engine switch is malfunctioning.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

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1. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU -BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
3. INSPECT ENGINE SWITCH Remove the engine switch. Disconnect the switch connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Switch Condition Specified Condition 7 (SS1) - 5 (GND) Pushed Below 1 ohms 2 (SS2) - 5 (GND) Pushed Below 1 ohms 7 (SS1) - 5 (GND) Not pushed 10 kohms or higher 2 (SS2) - 5 (GND) Not pushed 10 kohms or higher HINT: This switch is a momentary type switch. NG --> REPLACE ENGINE SWITCH OK: Go to next step
4. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J31-7 (SS1) - J55-14 (SSW1) Always Below 1 ohms J31-2 (SS2) - J55-37 (SSW2) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-7 (SS1) or J55-14 (SSW1) - Body ground Always 10 kohms or higher J31-2 (SS2) or J55-37 (SSW2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. READ VALUE USING TECHSTREAM (START SWITCH 1 AND 2) Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the start switches 1 and 2. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - Start Swtich2 Start Switch 2/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - OK ON (engine switch on (IG)) and OFF (engine switch off) appear on the screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
6. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2278 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS

The power source control ECU and the shift lock control ECU are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 112

Scheme 113

Scheme 114

1. CHECK DTC OUTPUT (MULTIPLEX COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
2. CHECK DTC OUTPUT (AUTOMATIC TRANSMISSION SYSTEM) Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for the automatic transmission system DTC P0705. OK DTC P0705 is not output. HINT: If DTC P0705 is output, perform troubleshooting for DTC P0705 first (A760H: Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387388-S32362386472011022400000), A960E: Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387360-S07863076812011022400000), A760E: Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387389-S41968722862011022400000) ). NG --> GO TO AUTOMATIC TRANSMISSION SYSTEM OK: Go to next step
3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT SHIFT LOCK CONTROL ECU Disconnect the shift lock control ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J48-11 (P2) - J48-8 (E) Shift P position Below 1 ohms Shift non-P position 10 kohms or higher NG --> REPLACE SHIFT LOCK CONTROL ECU OK: Go to next step
6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - SHIFT LOCK CONTROL ECU) Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-5 (P) - J48-11 (P2) Always Below 1 ohms J55-5 (P) or J48-11 (P2) - Body ground Always 10 kohms or higher J48-8 (E) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
7. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG). BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Shift P Signal Shift P position/ ON or OFF ON: Shift P position OFF: Shift non-P position - OK ON (shift P position) and OFF (shift non-P position) appear on the screen. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE ECM

The power source control ECU and the combination meter are connected by a cable and the BEAN. DTC B2282 is output when: 1) the cable information and BEAN information are inconsistent; and 2) a malfunction is detected between the vehicle speed sensor and combination meter.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 115

Scheme 116

HINT

1. A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
2. If a short occurs in an ECU, all systems in the diagram below will not operate normally.

Scheme 117

Scheme 118

Scheme 119

1. CHECK OPERATION OF SPEEDOMETER Drive the vehicle and check if the function of the speedometer in the combination meter is normal. OK Actual vehicle speed and the speed indicated on the speedometer are the same. HINT: The vehicle speed sensor is functioning normally when the indication on the speedometer is normal. NG --> REPLACE COMBINATION METER OK: Go to next step
2. CHECK DTC OUTPUT (MULTIPLEX NETWORK COMMUNICATION SYSTEM (BEAN)) Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387396-S37963320282011022400000). OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
3. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - COMBINATION METER) Disconnect the J34 meter connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-19 (SPD) - J34-5 (+S) Always Below 1 ohms J55-19 (SPD) or J34-5 (+S) - Body ground Always 10 kohms or higher HINT: If the result of the inspection for a short circuit is not as specified, there may be a short in the ECU. NG --> REPAIR OR REPLACE HARNESS, CONNECTOR OR EACH ECU OK: Go to next step
6. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the vehicle speed signal. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Vehicle Speed Signal Vehicle speed signal/ STOP or RUN STOP: Vehicle is stopped RUN: Vehicle is running - OK STOP (vehicle is stopped) and RUN (vehicle is running) appear on the screen. NG --> REPLACE COMBINATION METER OK: Go to next step
7. INSPECT POWER SOURCE CONTROL ECU (SPEED SIGNAL) Check the input signal waveform. Reconnect the connectors. Remove the combination meter assembly with connector(s) still connected. Connect the oscilloscope to the terminals J55-19 (SPD) and body ground. Turn the engine switch on (IG). Turn the wheel slowly. Check the signal waveform according to the condition(s) in the table below. Item Condition Tool setting 5 V/DIV., 10 ms./DIV. Vehicle condition Driving at approx. 20 km/h (12 mph) OK The waveform is displayed as shown in the illustration. HINT: As the vehicle speed increases, the cycle of the signal waveform narrows. NG --> REPLACE COMBINATION METER OK --> REPLACE POWER SOURCE CONTROL ECU

The skid control ECU converts these signals into 4-pulse signals and sends them to the combination meter. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the power source control ECU. The power source control ECU determines the vehicle speed based on the frequency of these pulse signals.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

This DTC is output when: 1) the brake signal circuit between the power source control ECU and the stop light switch is malfunctioning; and 2) the BEAN information is inconsistent.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 120

This DTC is output when serial communication signals and LIN communication signals in the circuit between the power source control ECU and steering lock actuator (steering lock ECU) are inconsistent.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 121

Scheme 122

1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTC B2785 and DTC B2287. OK DTC B2785 and DTC B2287 are not output. HINT: If DTC B2785 is output. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-387392-S10459714102011022400000). If DTC B2287 is output. Refer to «DTC B2287: LIN Communication Master Malfunction»(ref-387397-S21289441922011022400000). NG --> GO TO DTC CHART OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-26 (SLP) - J29-4 (SLP1) Always Below 1 ohms J55-30 (LIN1) - J29-5 (LIN) Always Below 1 ohms J55-26 (SLP) or J29-4 (SLP1) - Body ground Always 10 kohms or higher J55-30 (LIN1) or J29-5 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
6. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK --> REPLACE POWER SOURCE CONTROL ECU

This DTC is output when serial communication signals and multiplex communication signals in the circuit between the power source control ECU and ECM are inconsistent.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 123

Scheme 124

1. CHECK OPERATION OF TACHOMETER Run the engine and check if the function of the tachometer in the combination meter is normal. OK Actual engine revolution speed and the revolution indicated on the tachometer are the same. NG --> GO TO COMBINATION METER SYSTEM OK: Go to next step
2. CHECK DTC OUTPUT (MULTIPLEX NETWORK COMMUNICATION SYSTEM (BEAN)) Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for the multiplex network communication system DTCs B1210, B1214 and B1215. HINT: If the DTCs for the multiplex network communication system malfunction are output, inspect those DTCs first. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-387386-S38489328662011022400000). OK No DTC is output. NG --> GO TO MULTIPLEX COMMUNICATION SYSTEM OK: Go to next step
3. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM) Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for the CAN communication system DTC U0146. HINT: If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-387391-S01390035312011022400000). OK No DTC is output. NG --> GO TO CAN COMMUNICATION SYSTEM OK: Go to next step
4. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
6. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) Disconnect the A6 ECM connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-2 (TACH) - A6-16 (TACH) Always Below 1 ohms J55-2 (TACH) or A6-16 (TACH) - Body ground Always 10 kohms or higher HINT: If the result of the inspection for a short circuit is not as specified, there may be a short in the ECU. NG --> REPAIR OR REPLACE HARNESS, CONNECTOR OR EACH ECU OK: Go to next step
7. READ VALUE USING TECHSTREAM Reconnect the connectors. Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the engine running. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Engine Condition Engine condition/ STOP or RUN STOP: Engine is stopped RUN: Engine is running - OK STOP (engine is stopped) and RUN (engine is running) appear on the screen. NG --> REPLACE ECM OK: Go to next step
8. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2286 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> CHECK INTERMITTENT PROBLEMS

This DTC is output when there is a LIN communication problem between the power source control ECU and smart key ECU (certification ECU).

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 125

Scheme 126

Scheme 127

1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTC B2285 and B2785. Result Display (DTC output) Proceed to "DTC B2287" only A "DTC B2287" and "DTC B2785" are output B No DTC is outpu. C HINT: If DTC B2785 is output, perform troubleshooting for DTC B2785 first. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-387392-S10459714102011022400000). C --> CHECK INTERMITTENT PROBLEMS B --> GO TO DTC CHART A: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU) Disconnect the J55 ECU connector. Disconnect the P33 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-30 (LIN1) - P33-10 (LIN) Always Below 1 ohms J55-30 (LIN1) or P33-10 (LIN) - Body ground Always 10 kohms or higher OK --> REPLACE POWER SOURCE CONTROL ECU NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR

This DTC is output when the power source control ECU cannot detect the unlock condition of the steering lock within a specified time.

HINT

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

Scheme 128

Scheme 129

1. CHECK FOR DTCS Delete the DTC. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2785, DTC B2287 and DTC B2781 are not output. HINT: If DTC B2785 is output. Refer to «DTC B2785: Communication Malfunction between ECUs Connected by LIN; DTC B2786: No Response from Steering Lock ECU; DTC B2789: No Response from ID BOX»(ref-387392-S10459714102011022400000). If DTC B2287 is output. Refer to «DTC B2287: LIN Communication Master Malfunction»(ref-387397-S21289441922011022400000). If DTC B2278 is output. Refer to «DTC B2278: Engine Switch Circuit Malfunction»(ref-387397-S11236477462011022400000). NG --> GO TO DTC CHART OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - STEERING LOCK ECU) Disconnect the J29 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition J55-26 (SLP) - J29-4 (SLP1) Always Below 1 ohms J55-32 (SLR+) - J29-3 (IGE) Always Below 1 ohms J55-30 (LIN1) - J29-5 (LIN) Always Below 1 ohms J29-2 (SGND) - Body ground Always Below 1 ohms J29-1 (GND) - Body ground Always Below 1 ohms J55-26 (SLP) or J29-4 (SLP1) - Body ground Always 10 kohms or higher J55-32 (SLR+) or J29-3 (IGE) - Body ground Always 10 kohms or higher J55-30 (LIN1) or J29-5 (LIN) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
5. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Engine switch on (IG) OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE POWER SOURCE CONTROL ECU OK: Go to next step
6. INSPECT STEERING LOCK ECU Reconnect the J29 ECU connector. Connect the oscilloscope to the power source control ECU terminals specified in the table below and check the waveform. Item Contents Terminal (Symbols) J55-26 (SLP) - Body ground Equipment Setting 2 V/DIV., 100 ms./DIV. Condition Steering is LOCK / UNLOCK OK The waveform appears as shown in the illustration. HINT: The waveform varies depending on the contents of communication. NG --> REPLACE STEERING LOCK ECU OK: Go to next step
7. RECHECK FOR DTC Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). Check for DTCs again. OK DTC B2288 is not output. NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPLACE STEERING LOCK ECU

This DTC is output when there is a LIN communication problem between the power source control ECU and certification ECU or when there is a problem in the engine immobiliser system.

Scheme 130

Engine start conditions or system malfunctions can be checked by the status of the engine switch indicator light.

ENGINE SWITCH INDICATOR LIGHT CONDITION

Scheme 131

Scheme 132

Scheme 133

1. INSPECT ENGINE SWITCH Remove the engine switch. Apply battery voltage between the terminals of the switch, and check the illumination condition of the switch. NOTE: If the positive (+) lead and the negative (-) lead are incorrectly connected, the engine switch indicator does not illuminate. If the voltage is too low, the indicator will not illuminate. OK Measurement Condition Specified Condition Battery positive (+) --> Terminal 11 (SWIL) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates Battery positive (+) --> Terminal 12 (INDS) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates Battery positive (+) --> Terminal 13 (INDW) Battery negative (-) --> Terminal 4 (COM) or 5 (GND) Illuminates NG --> REPLACE ENGINE SWITCH OK: Go to next step
2. CHECK WIRE HARNESS (ENGINE SWITCH - POWER SOURCE CONTROL ECU AND BODY GROUND) Disconnect the J31 switch connector. Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition J31-11 (SWIL) - J55-36 (SWIL) Always Below 1 ohms J31-12 (INDS) - J55-4 (INDS) Always Below 1 ohms J31-13 (INDW) - J55-13 (INDW) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-4 (COM) - Body ground Always Below 1 ohms J31-11 (SWIL) or J55-36 (SWIL) - Body ground Always 10 kohms or higher J31-12 (INDS) or J55-4 (INDS) - Body ground Always 10 kohms or higher J31-13 (INDW) or J55-13 (INDW) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU

When the engine switch is pushed with the electrical key in the cabin, the power source control ECU receives signals to switch the power source mode.

HINT

To allow use of Techstream to inspect the smart access system with push-button start when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between Techstream and the power source control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

Scheme 140

Scheme 141

Scheme 142

1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. CHECK FOR DTCS Delete the DTCs. Refer to «DTC CHECK / CLEAR»(ref-387396-S31508654092011022400000). HINT: After all the DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG). Check for DTCs again. OK No DTC is output. NG --> GO TO DTC CHART OK: Go to next step
5. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the engine switch on (IG). Check the DATA LIST for proper functioning of the start switches 1 and 2. BODY: Tester Display Measurement Item/Range Normal Condition Diagnostic Note Start Switch1 Start Switch 1/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - Start Switch2 Start Switch 2/ ON or OFF ON: Engine switch on (IG) OFF: Engine switch OFF - OK ON (engine switch on (IG)) and OFF (engine switch off) appear on the screen. NG --> See step 10 OK: Go to next step
6. INSPECT RELAY (IG2) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> REPLACE RELAY (IG2) OK: Go to next step
7. INSPECT JUNCTION BLOCK (RH-IG RELAY, LH-IG RELAY, ACC RELAY, PWR POINT RELAY) RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - Body ground Always 10 kohms or higher RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) RD-2 - Body ground Always 10 kohms or higher RD-6 - RD-12 Always Below 1 ohms RM-1 - RD-14 When battery voltage is applied to terminals RD-6 and RA-5 or RD-7 Below 1 ohms RM-1 - RD-27 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms RM-1 - RJ-16 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher LM-1 - LK-6 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9 Below 1 ohms LM-1 - LD-29 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9 Below 1 ohms NG --> REPLACE JUNCTION BLOCK OK: Go to next step
8. CHECK WIRE HARNESS Inspect the resistance and voltage (Power source control ECU or battery - IG2 relay). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - IG2 relay terminal 2 Always Below 1 ohms IG2 relay terminal 1 - Body ground Always Below 1 ohms J55-35 (IG2D) or IG2 relay terminal 2 - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition IG2 relay terminal 5 - Body ground Always 10 to 14 V Inspect the resistance and voltage (Power source control ECU or battery - Cowl side J/B RH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - RD-6 Always Below 1 ohms J55-11 (ACCD) - RD-2 Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms RA-5 - Body ground Always Below 1 ohms J55-34 (IG1D) or RD-6 - Body ground Always 10 kohms or higher J55-11 (ACCD) or RD-2 - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition RM-1 - Body ground Always 10 to 14 V Inspect the resistance (Cowl side J/B RH - Cowl side J/B LH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Inspect the voltage (Battery - Cowl side J/B LH). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition LM-1 - Body ground Always 10 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
9. INSPECT POWER SOURCE CONTROL ECU Reconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
10. INSPECT ENGINE SWITCH Remove the engine switch. Measure the resistance of the switch. Standard resistance Tester Connection Switch Condition Specified Condition 7 (SS1) - 5 (GND) Pushed Below 1 ohms 2 (SS2) - 5 (GND) Pushed Below 1 ohms 7 (SS1) - 5 (GND) Not pushed 10 kohms or higher 2 (SS2) - 5 (GND) Not pushed 10 kohms or higher NG --> REPLACE ENGINE SWITCH OK: Go to next step
11. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU AND BODY GROUND - ENGINE SWITCH) Disconnect the J55 ECU connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J31-7 (SS1) - J55-14 (SSW1) Always Below 1 ohms J31-2 (SS2) - J55-37 (SSW2) Always Below 1 ohms J31-5 (GND) - Body ground Always Below 1 ohms J31-7 (SS1) or J55-14 (SSW1) - Body ground Always 10 kohms or higher J31-2 (SS2) or J55-37 (SSW2) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> REPLACE POWER SOURCE CONTROL ECU

When the engine switch is pushed with the electrical key in the cabin, the power source control ECU receives signals to switch the power source mode.

HINT

To allow use of Techstream to inspect the smart access system with push-button start when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between Techstream and the power source control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

Scheme 143

Scheme 144

Scheme 145

Scheme 146

Scheme 147

1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the J55 ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT RELAY (IG2 RELAY) Remove the IG2 relay from the engine room R/B No. 2. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Specified Condition 3 - 5 10 kohms or higher 3 - 5 Below 1 ohms (When battery voltage is applied to terminals 1 and 2) NG --> See step 8 OK: Go to next step
5. INSPECT JUNCTION BLOCK (RH-IG RELAY, LH-IG RELAY) RH-IG relay: Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-6 - RA-5 or RD-7 Always 136 to 250 ohms at 20°C (68°F) RD-6 - RD-12 Always Below 1 ohms RD-6 - Body ground Always 10 kohms or higher RM-1 - RD-14 When battery voltage is applied to terminals RD-6 and RD-12 or RA-5 or RD-7) Below 1 ohms LH-IG relay: Disconnect the cowl side J/B LH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition LD-13 - LD-8 or LD-9 Always 68 to 250 ohms at 20°C (68°F) LD-13 - Body ground Always 10 kohms or higher LM-1 - LK-6 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9) Below 1 ohms LM-1 - LD-29 When battery voltage is applied to terminals LD-13 and LD-8 or LD-9) Below 1 ohms NG --> See step 8 OK: Go to next step
6. CHECK WIRE HARNESS Inspect the resistance and voltage (Power source control ECU or battery - IG2 relay). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-35 (IG2D) - IG2 relay terminal 2 Always Below 1 ohms IG2 relay terminal 1 - Body ground Always Below 1 ohms J55-35 (IG2D) or IG2 relay terminal 2 - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection Condition Specified Condition IG2 relay terminal 5 - Body ground Always 10 to 14 V Inspect the resistance and voltage (Power source control ECU or battery - Cowl side J/B RH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - RD-6 Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms RA-5 - Body ground Always Below 1 ohms J55-34 (IG1D) or RD-6 - Body ground Always 10 kohms or higher Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition RM-1 - Body ground Always 10 to 14 V Inspect the resistance (Cowl side J/B RH - Cowl side J/B LH). Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition RD-12 - LD-13 Always Below 1 ohms RD-12 - Body ground Always 10 kohms or higher LD-8 - Body ground Always Below 1 ohms LD-9 - Body ground Always Below 1 ohms Inspect the voltage (Battery - Cowl side J/B LH). Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition LM-1 - Body ground Always 10 to 14V NG --> See step 9 OK: Go to next step
7. INSPECT POWER SOURCE CONTROL ECU Reconnect the connectors. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
8. REPLACE FAULTY RELAY OR J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
9. REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-34 (IG1D) - Body ground Engine switch off Below 1 V Engine switch on (IG) 8 to 14 V J55-35 (IG2D) - Body ground Engine switch off Below 1 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

When the engine switch is pushed with the electrical key in the cabin, the power source control ECU receives signals to switch the power source mode.

HINT

To allow use of Techstream to inspect the smart access system with push-button start when the engine switch is off, repeat opening and closing any of the doors. Opening and closing a door establishes communication between Techstream and the power source control ECU. (Opening and closing a door can also be simulated by operating a door courtesy light switch.)

Scheme 148

1. INSPECT FUSE (AM2) Remove the AM2 fuse from the cowl side J/B RH. Measure the resistance of the fuse. Standard resistance Below 1 ohms NG --> REPLACE FUSE OK: Go to next step
2. CHECK CONNECTORS Check that the connectors are securely connected and the terminals are not deformed or loose. OK The connectors are securely connected and the terminals are not deformed or loose. NG --> REPAIR OR REPLACE CONNECTORS OK: Go to next step
3. INSPECT WIRE HARNESS (POWER SOURCE CONTROL ECU - BATTERY AND BODY GROUND) Disconnect the ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-33 (AM1) - Body ground Always 10 to 14 V J55-12 (AM2) - Body ground Always 10 to 14 V Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-6 (GND2) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
4. INSPECT COWL SIDE JUNCTION BLOCK RH (ACC RELAY, PWR POINT RELAY) Disconnect the cowl side J/B RH connectors. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition RD-2 - RA-5 or RD-7 Always 68 to 250 ohms at 20°C (68°F) RM-1 - RD-27 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms RM-1 - RJ-16 When battery voltage is applied to terminals RD-2 and RA-5 or RD-7 Below 1 ohms NG --> See step 7 OK: Go to next step
5. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU OR BATTERY - COWL SIDE J/B RH) Measure the resistance of the wire harness side connector. Standard resistance Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - RD-2 Always Below 1 ohms J55-11 (ACCD) - Body ground Always 10 kohms or higher RA-5 - Body ground Always Below 1 ohms RD-7 - Body ground Always Below 1 ohms Measure the voltage of the wire harness side connector. Standard voltage Tester Connection Condition Specified Condition RM-1 - Body ground Always 10 to 14 V NG --> See step 8 OK: Go to next step
6. INSPECT POWER SOURCE CONTROL ECU Reconnect the connector. Measure the voltage of the wire harness side connector. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COWL SIDE J/B - EACH SYSTEM)
7. REPLACE FAULTY J/B AND CHECK POWER SOURCE CONTROL ECU Replace a faulty relay or J/B and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END
8. REPLACE FAULTY WIRE HARNESS OR CONNECTOR AND CHECK POWER SOURCE CONTROL ECU Repair or replace a faulty wire harness or connector and then connect the power source control ECU connector. Measure the voltage according to the value(s) in the table below. Standard voltage Tester Connection (Symbols) Condition Specified Condition J55-11 (ACCD) - Body ground Engine switch off Below 1 V Engine switch on (ACC) 8 to 14 V NG --> REPLACE POWER SOURCE CONTROL ECU OK --> END

See also:
• INSPECTION