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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Engine Controls - Self-Diagnostics - 1.6L) >> Diagnostic Tests >> DTC P1530: Ignition Timing Adjustment Switch Circuit Malfunction >> Diagnosis & Repair Procedure

Diagnosis & Repair Procedure

WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
  1. If engine system check has been performed, go to next step. If engine system check has not been performed, go to A4: ENGINE SYSTEM CHECK  under SYSTEM TESTS.
  2. Ensure test switch terminal of DIAG.-1 test connector (located in engine compartment fuse/relay block located in left side of engine compartment) is not grounded. See Fig 1 . If test switch terminal is grounded, remove jumper wire and repeat DTC CONFIRMATION TEST  . If test switch terminal is not grounded, go to next step.
  3. Turn ignition on. Measure voltage between ground and DIAG.-1 test connector terminal No. 5 (test switch terminal). If voltage is 10-14 volts, problem is probably intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES article. If reading is not 10-14 volts, go to next step.
  4. Check for short to ground in Purple/White wire between DIAG.-1 ignition timing adjustment test switch and ECM harness connector E92 terminal No. 7. See Figure , and see WIRING DIAGRAMS article. If problem is found, repair as necessary. After repair, repeat DTC CONFIRMATION TEST  . If no problem is found, go to next step.
  5. Substitute a known good ECM, and repeat DTC CONFIRMATION TEST  . If DTC does not reset, testing is complete.
Fig 1: Identifying DIAG.-1 Test Connector Terminals
G98B12337Courtesy of SUZUKI OF AMERICA CORP.
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