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This error is signalled if the control unit does not detect the additional heater. |
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Test results |
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1 |
CAN CONTROL UNITS FAULT DIAGNOSIS |
All OK |
Problems encountered |
Operation |
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Use the diagnostic tool to test the CAN line control units; specifically check for errors on the additional heater node. |
Move on to Step 2 |
1. Presence of errors at CAN control units 2. Presence of additional heater errors. |
1. Continue following the instructions given by the diagnostic equipment. 2. Continue following the instructions given by the diagnostic equipment. |
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2 |
CAN IMPEDANCE CHECK |
All OK |
Problems encountered |
Operation |
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Detach the body computer connector and check, using the tester, that the control unit side circuit resistance is 120 Ohms like on the connector side Check the additional heater supply voltage |
Move on to Step 3 |
1. CAN faulty 2. No additional heater power |
1. Move on to Step 3 2. Restore the correct power supply. |
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3 |
ELECTRICAL CHECKS |
All OK |
Problems encountered |
Operation |
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Check the additional heater wiring harness |
Move on to Step 4 |
Wiring faulty |
Restore the correct connection |
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4 |
CORRECT OPERATION CHECK |
All OK |
Problems encountered |
Operation |
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Use the diagnostic instrument to delete the error and check that the fault is no longer present |
End of diagnosis |
The fault persists. |
Move on to Step 1. |
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