6.
Measure resistance between terminal 1, 2, 3 of PTC heater and ground line.
Resistance : 0.3 ~ 1.5Ω
1. - 2. STEP 3 | 3. STEP 2 4. STEP 1 |
This test should be performed in the PTC ON conditions.
Run the engine.
Check the current on wiring with a clamp multi tester.
Pattern | Current (A) |
STEP 1 ON | 0.1 ~33 |
STEP 2 ON | 0.1 ~ 33 |
STEP 3 ON | 0.1 ~ 33 |
Total | 0.1 ~ 100 |
If the current is not in specification, inspect related wiring.
Turn the ignition switch OFF.
Disconnect the PTC heater connector.
Measure resistance between terminal 1, 2, 3 of PTC heater and ground line.
Resistance : 0.3 ~ 1.5Ω
1. - 2. STEP 3 | 3. STEP 2 4. STEP 1 |
If the measured resistance is not in specification, replace the PTC heater with new one.
