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− − − − − − − − − − *03 *04 *05 YES NO YES NO YES NO YES NO YES NO 21-36 Heating/Air Conditioning A/C Pressure Switch Circuit Troubleshooting (cont’d) HEATER CONTROL PANEL 22P CONNECTOR YEL/GRN BRN HEATER CONTROL PANEL 22P CONNECTOR HEATER FAN SWITCH 7P CONNECTOR GRN GRN HEATER FAN SWITCH 7P CONNECTOR BLK 11. Measure the resistance between the No. 17 and No.20 terminals of the heater control panel 22P connector. Go to step 12. Repair cause of high resistance in the evaporator temperature circuit. 12. Disconnect the heater fan switch 7P connector. 13. Check for continuity between the No. 21 terminal of the heater control panel 22P connector and the Go to step 14. Repair open in the wire between the heater control panel and the heater fan switch. 14. Test the heater fan switch (see page 21-40). Go to step 15. Replace the heater fan switch. 15. Check for continuity between the No. 1 terminal of the heater fan switch 7P connector and body Check for loose wire or poor connections at the heater control panel 22P connector, the heater Check for an open in the wire between the heater fan switch and body ground. If the wire is 16. Check for proper A/C system pressure. Replace the A/C pressure switch. Repair the A/C pressure problem. Wire side of female terminals Wire side of female terminals Wire side of female terminals Wire side of female terminals Is the r esistance less than 24 k ohms? Is ther e continuity? Is the heater f an switch OK ? Is ther e continuity? Is the pr essur e within specif ications? 03/07/29 10:10:33 61S0X050_210_0037 |