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Charging System (Diagnostic Codes): Other Scion FR-S I

Charging System 1 illustration ~731 words

PROCEDURE

  1. INSPECT BATTERY CURRENT SENSOR ASSEMBLY Disconnect the cable from the negative (-) battery terminal. Disconnect the A11 battery current sensor assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 2 (THB) - 3 (GND) 20 to 30°C (68 to 86°F) 1.5 to 2.6 kohms TEXT IN ILLUSTRATION *a Component without harness connected (Battery Current Sensor Assembly) Reconnect the cable to the negative (-) battery terminal. NG --> See step 3 OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (BATTERY CURRENT SENSOR ASSEMBLY - ECM) Disconnect the A33 and A35 ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A33-24 (THB) - A11-2 (THB) Always Below 1 ohms A35-30 (EPA2) - A11-3 (GND) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A33-24 (THB) or A11-2 (THB) - Body ground Always 10 kohms or higher A35-30 (EPA2) or A11-3 (GND) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 4
  3. REPLACE BATTERY CURRENT SENSOR ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612382-S21198480672014042900000)
  4. REPLACE ECM. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612354-S32372465292014042900000)

Scheme 12

Scheme 12: DESCRIPTION
Scheme 12: DESCRIPTION

The battery current sensor assembly installed on the negative (-) battery terminal detects the amount of current supplied from the generator.

The battery current sensor assembly changes current to voltage (at the negative (-) battery terminal) and sends it to the ECM. The ECM controls the voltage of the generator based on the signals from the battery current sensor assembly.

DTC No.DTC Detection ConditionTrouble Area
P1530Engine speed is 500 r/min or more, battery voltage is 10.9 V or more, and 1 second or more have elapsed after starting. Battery current sensor output is less than 0.347 V, and duration of the malfunction is 0.5 seconds or more (1-trip detection logic).Battery current sensor assembly Open or short to GND in battery current sensor circuit ECM
P1531Engine speed is 500 r/min or more, battery voltage is 10.9 V or more, and 1 second or more have elapsed after starting. Battery current sensor output is more than 4.653 V, and duration of the malfunction is 0.5 seconds or more (1-trip detection logic).Battery current sensor assembly Short to +B or VC in battery current sensor circuit ECM
P1532Ignition switch ON Current sensor fixing diagnosis: The difference between the maximum and minimum current value when changing charging states is less than 0.07 V, and the charging state changes 10 times or more in succession when malfunctioning (1-trip detection logic). Charging side properties diagnosis: After the alternator target DUTY has changed from 60% or more to less than 40%, with the alternator target DUTY is less than 40%, the battery voltage is less than 13.2 V and the battery current sensor voltage is 2.6 V or more and less than 5 V, and the duration of the malfunction is 30 seconds or more (1-trip detection logic). Discharge side properties diagnosis: After the alternator target DUTY has changed from less than 40% to 60% or more, with the alternator target DUTY at 60% or more, the battery voltage is more than 13.7 V and the battery current sensor voltage is 0 V or more and less than 2.4 V and the duration of malfunction is 30 seconds or more (1-trip detection logic).Battery current sensor assembly Short in battery current sensor circuit ECM
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P1530, P1531, P1532) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / DTC. Read the DTC. RESULT Result Proceed to DTC P1530, P1531 and P1532 are output A DTC P1530, P1531, P1532 and other DTCs are output B HINT: If any DTCs other than P1530, P1531 and P1532 are output, troubleshoot those DTCs first. B --> See step 7 A: Go to next step
  2. READ VALUE USING TECHSTREAM (BATTERY CURRENT) Turn all of the electrical systems (headlights, blower motor, rear defogger, etc.) off. Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Data List / Battery Current. RESULT Result Proceed to Battery current is fixed at 0 A, or fluctuates by +/- 1 A or less between -100 and 100 A A Battery current fluctuates between -20 and 0 A B B --> See step 8 A: Go to next step
  3. INSPECT BATTERY CURRENT SENSOR ASSEMBLY Disconnect the cable from the negative (-) battery terminal. Disconnect the A11 battery current sensor assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition 1 (VIN) - 3 (GND) Always 3 to 10 kohms 1 (VIN) - 4 (IB) Always Below 0.5 kohms 3 (GND) - 4 (IB) Always 3 to 10 kohms TEXT IN ILLUSTRATION *a Component without harness connected (Battery Current Sensor Assembly) Reconnect the cable to the negative (-) battery terminal. NG --> See step 5 OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (BATTERY CURRENT SENSOR ASSEMBLY - ECM) Disconnect the A33 and A35 ECM connectors. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A33-11 (IB) - A11-4 (IB) Always Below 1 ohms A35-22 (VCP2) - A11-1 (VIN) Always Below 1 ohms A35-30 (EPA2) - A11-3 (GND) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A33-11 (IB) or A11-4 (IB) - Body ground Always 10 kohms or higher A35-22 (VCP2) or A11-1 (VIN) - Body ground Always 10 kohms or higher A35-30 (EPA2) or A11-3 (GND) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 6
  5. REPLACE BATTERY CURRENT SENSOR ASSEMBLY. Refer to «REMOVAL [07/2013 - ]»(ref-612382-S21198480672014042900000)
  6. REPLACE ECM. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612354-S32372465292014042900000)
  7. GO TO DTC CHART. Refer to «DIAGNOSTIC TROUBLE CODE CHART [07/2013 - ]»(ref-612376-S01524865652014042900000)
  8. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013]»(ref-612229-S16181698712014042900000)

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