|
|
Content .. 1488 1489 1490 1491 ..
DIAGNOSIS AND TESTING - HEATED SEAT MODULE If a heated seat fails to heat and one or both of the 1. Remove the heated seat module from its mounting location (Refer to 8 - ELECTRICAL/ELECTRONIC NOTE: Any resistance values (ohms V ) given in the following text are supplied using the automatic T automotive meter. If another type of measuring device is used the val- RIGHT SEAT HEATER INOPERATIVE 1. If a heated seat heats but one or both indicator lamps (LED’s) on the heated seat switch fail to illuminate, check the driver circuit with the inoperative LED for a short to ground. If OK, replace the heated seat switch. If NOT OK NOTE: If the right seat cushion is already warm the following step will not prove conclusive. 2. Back-probe the heated seat module wire harness connector, do not disconnect. Check cavity #3 for battery volt- age when the right heated seat switch is turned “ON”, voltage should be present, If OK go to Step 3 If NOT OK, NOTE: Be certain the battery is fully charged before testing. Failure to do so can result in incorrect read- 3. Back-probe the heated seat module wire harness connector, do not disconnect. Check cavity #10 for battery voltage, while observing the voltmeter depress the right heated seat switch low setting twice, voltage should 4. Back-probe the heated seat module wire harness connector, do not disconnect. Check cavity #11 for battery voltage, while observing the voltmeter depress the right heated seat switch high setting twice, voltage should 5. Back-probe the heated seat module wire harness connector, do not disconnect. Check cavity #2 for approx. 5v, voltage should be present, If OK go to Step 6. If NOT OK replace the heated seat control module. 6. Back-probe the heated seat module wire harness connector, do not disconnect. Check cavity #7 for a range in voltage from 1.72v (warm seat) – 3.0v (cold seat). It should be within this range, If OK replace the heated seat 8E - 172 ELECTRONIC CONTROL MODULES KJ |