Vitara (2.0L)
WARNING: This page is about a different car, the 2002 Suzuki XL-7, 2002 Suzuki Vitara, 2002 Suzuki Grand Vitara, 2002 Suzuki Esteem, and 2002 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition on. Backprobing at ECM, measure voltage between ground and ECM connector E61 terminal No. 17 (Yellow/Black wire). See Fig 1 . With A/C and blower switch Off, voltage should be 10-14 volts. With A/C and blower switch On, voltage should be 0-1.5 volts. If voltage readings are as specified, go to next step. If voltage readings are not as specified, check for open or short in Yellow/Black wire between ECM and A/C control module. See WIRING DIAGRAMS article. If no problem with wiring is found, check for A/C malfunction. See appropriate MANUAL or AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
- Turn ignition on. Backprobing at ECM, measure voltage between ground and ECM connector E61 terminal No. 8 (Grey/White wire). With A/C and blower switch Off, voltage should be 0-1 volts. With A/C and blower switch On, voltage should be 10-14 volts. If voltage readings are as specified, A/C circuit s are okay. If voltage readings are not as specified, go to next step.
- Check for open or short in Grey/White or Grey/Yellow wire between A/C amplifier and ECM. See Fig 1 . Also, check for poor performance of ECT sensor, TP sensor, engine start signal input to ECM. For testing procedures, see appropriate DTC testing procedure in SELF-DIAGNOSTICS - VITARA 2.0L . If problem is found, repair as necessary. After repair, retest system. If no problem with wiring or sensors is found, substitute ECM with known good unit and retest system.