Home ReviewsRefund Car not listed?
Home/Oldsmobile/Aurora/Oldsmobile Aurora II (1999-2003)/Repair manual/Automatic HVAC System/DTC P1531: DASH INTEGRATION MODULE (DIM)
Contents Wiring diagrams Section: Automatic HVAC System All sections

DTC P1531: DASH INTEGRATION MODULE (DIM) Oldsmobile Aurora II

Automatic HVAC System ~466 words
  1. Perform diagnostic system check. See «DIAGNOSTIC SYSTEM CHECK»(ref-91547-S34777884642001040900000) under TROUBLE SHOOTING. After performing system check, go to next step.
  2. Connect scan tool. Turn ignition on. Using scan tool, observe EVAPORATOR TEMP. parameter in DASH INTEGRATION MODULE A/C INFORMATION data list. If scan tool indicates EVAPORATOR TEMP. parameter is within -34°F to 261°F (-37°C to 127°C), inspect wiring and connectors for intermittent loose wires and/or poor connections. If scan tool indicates EVAPORATOR TEMP. parameter is not within -34°F to 261°F (-37°C to 127°C), go to next step.
  3. Turn ignition off. Disconnect A/C low temperature sensor. Turn ignition on. Using scan tool, observe EVAPORATOR TEMP. parameter in DASH INTEGRATION MODULE A/C INFORMATION data list. If scan tool indicates EVAPORATOR TEMP. parameter is -34°F (-37°C) or less, go to next step. If scan tool indicates EVAPORATOR TEMP. parameter is more than -34°F (-37°C), go to step 5.
  4. Turn ignition off. Connect jumper wire between terminals "A" (Black/White wire) and "B" (Gray wire) of A/C low temperature sensor harness connector. Turn ignition on. Using scan tool, observe EVAPORATOR TEMP. parameter in DASH INTEGRATION MODULE A/C INFORMATION data list. If scan tool indicates EVAPORATOR TEMP. parameter is 261°F (127°C) or less, go to next step. If scan tool indicates EVAPORATOR TEMP. parameter is more than 261°F (127°C), check for loose wires and poor connections at A/C low temperature sensor harness connector. If wiring and connections are okay, replace A/C low temperature sensor. See «A/C LOW TEMPERATURE SENSOR»(ref-91547-S34929223572001042500000) under REMOVAL & INSTALLATION.
  5. Check for voltage between ground and terminal "B"(Gray wire) of A/C low temperature sensor harness connector. (Схема №7) If voltage exists, repair short to voltage in Gray wire between A/C low temperature sensor and terminal A7 of Dash Integration Module (DIM). If voltage does not exist, check for loose wires and/or poor connections at DIM. If wiring and connections are okay, replace DIM. See «DASH INTEGRATION MODULE (DIM)»(ref-91547-S16451250002001042600000) under REMOVAL & INSTALLATION.
  6. Check for voltage between ground and terminal "B"(Gray wire) of A/C low temperature sensor harness connector. If voltage exists, repair short to voltage in Gray wire between A/C low temperature sensor and terminal A7 of DIM. If voltage does not exist, go to next step.
  7. Check continuity in Gray wire between terminal "B"of A/C low temperature sensor and terminal A7 of DIM. If continuity exists, go to next step. If continuity does not exist, repair open or high resistance in Gray wire.
  8. Check continuity in Black/White wire between terminal "A" of A/C low temperature sensor and terminal A6 of DIM. If continuity exists, check for loose wires and poor connections at DIM. If wiring and connectors are okay, replace DIM. See «DASH INTEGRATION MODULE (DIM)»(ref-91547-S16451250002001042600000) under REMOVAL & INSTALLATION. If continuity does not exist, repair open or high resistance in Black/White wire.

More articles — HVAC System - Automatic - Aurora