DTC P1336 / P1337 / P1338
Precautions: Precautions for Diagnosing Trouble · Precautions for Servicing ENG A-STOP System · Precautions for Replacing ENG A-STOP Control Module · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
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P1336: ENG A-STOP DC-DC Converter “B” Enable Circuit / Open Monitored status of DC/DC converter output signal circuit is higher than specified value for specified time. |
•DC/DC converter circuit / connector
•DC/DC converter •ENG A-STOP control module |
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P1337: ENG A-STOP DC-DC Converter “B” Enable Circuit Low Monitored status of DC/DC converter output signal circuit is less than specified value for specified time. |
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P1338: ENG A-STOP DC-DC Converter “B” Enable Circuit High Monitored status of DC/DC converter output signal circuit is higher than specified value for specified time. |
Circuit Diagram
| [A]: | ENG A-STOP control module connector (View: [a]) | 2. | DC/DC converter | 6. | To TCM |
| A1: | DC/DC converter ON signal circuit | 3. | “DCDC2” fuse | 7. | To ignition switch (ignition switch model) or IG1 relay (keyless push start model) |
| B1: | DC/DC converter diagnosis signal circuit | 4. | “T/M5” fuse | ||
| 1. | ENG A-STOP control module | 5. | “IG1 SIG” fuse |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DC/DC converter ON signal circuit check
1)Set ignition “OFF”.
2)Disconnect DC/DC converter and “E24” connectors.
3)Check for proper terminal connection to DC/DC converter and “E24” connectors.
4)If connections are OK, check the following points.
•Resistance “A1” circuit: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and other terminal at DC/DC converter connector: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
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Go to Step 2.
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Repair or replace defective wire harness.
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| 2 |
DC/DC converter check
1)Check DC/DC converter.
Is check result OK?
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Replace ENG A-STOP control module and recheck DTC.
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Replace DC/DC converter.
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