Starting System: Other Chevrolet Camaro IV facelift

SYSTEM TESTS

Note. The following tests assume that engine and battery are operating normally and are at operating temperature, battery is charged, there are no engine problems that would cause a no-start condition, and no diagnostic trouble codes are present.

SLOW OR NO CRANK ONLY AFTER EXTENDED PERIODS OF VEHICLE NON-USE

There may be a parasitic load on electrical system. See PARASITIC LOAD EXPLANATION & TEST PROCEDURES article in GENERAL INFORMATION.

ENGINE DOES NOT CRANK, STARTER SOLENOID DOES NOT CLICK

1. Remove starter relay from underhood junction block. See «COMPONENT LOCATIONS»(ref-8268-S09955308622000081600000) . Using test light connected to battery voltage, probe underhood junction block terminal C6 (Yellow/Black wire). Turn ignition switch to START position while observing test light. If test light illuminates, go to next step. If test light does not illuminate, malfunction is in ANTI-THEFT system. See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
2. Using test light connected to ground, probe underhood junction block terminal C4 (Red wire). If test light illuminates, go to next step. If test light does not illuminate, go to step 4 .
3. Using test light connected to ground, probe underhood junction block terminal B4 (Dark Green wire). On vehicles equipped with automatic transmission, ensure shift lever is in Park or Neutral. On vehicles equipped with manual transmission, ensure clutch pedal is depressed. On all vehicles, turn ignition switch to START position while observing test light. If test light illuminates, go to step 5 . If test light does not illuminate, go to step 6 .
4. Repair open in Red wire between underhood junction block terminal C4 and splice S183, located in forward lamp harness, several inches away underhood junction block breakout. See «WIRING DIAGRAMS»(ref-8268-S00983095882000081600000) . Retest operation.
5. Install starter relay into underhood junction block. Disconnect Purple wire from starter solenoid "S" terminal. Connect test light between terminal end of Purple wire and ground. On vehicles equipped with automatic transmission, ensure shift lever is in Park or Neutral. On vehicles equipped with manual transmission, ensure clutch pedal is depressed. On all vehicles, turn ignition switch to START position while observing test light. If test light illuminates, go to step 12 . If test light does not illuminate, go to step 9 .
6. Check for open or poor connection in Dark Green wire between underhood junction block terminal B4 and Park/Neutral Position (PNP) switch connector terminal "F" (automatic transmission) or Clutch Pedal Position (CPP) switch connector terminal "B" (manual transmission). See «WIRING DIAGRAMS»(ref-8268-S00983095882000081600000) . Repair as necessary and retest operation. If Dark Green wire checks okay, go to next step.
7. Check for open or poor connection in Purple/White wire between 48-pin connector C200D, located between left kick panel and steering column and Park/Neutral Position (PNP) switch connector terminal "E" (automatic transmission) or Clutch Pedal Position (CPP) switch connector terminal "A" (manual transmission). Repair as necessary and retest operation. If Purple/White wire checks okay, go to next step.
8. On vehicles equipped with automatic transmission, check operation and adjustment of PNP switch. See appropriate AUTOMATIC TRANSMISSION SERVICING article in AUTOMATIC TRANSMISSIONS. Repair as necessary and retest operation. If PNP switch adjustment and operation are okay, replace PNP switch and retest operation. On vehicles equipped with manual transmission, replace CPP switch and retest operation.
9. Check for poor connection to starter relay in underhood junction block. Repair as necessary and retest operation. If starter relay connections are okay, go to next step.
10. Check for open or poor connection in Purple wire between underhood junction block terminal B6 and starter solenoid "S" terminal. See «WIRING DIAGRAMS»(ref-8268-S00983095882000081600000) . Repair as necessary and retest operation. If Purple wire checks okay, go to next step.
11. Replace starter relay and retest operation.
12. Check for open or high resistance in positive battery cable between battery and starter solenoid. Repair as necessary and retest operation. If positive battery cable checks okay, go to next step.
13. Replace starter assembly and retest operation. See «STARTER»(ref-8268-S15803113362000081600000) under REMOVAL & INSTALLATION.

ENGINE DOES NOT CRANK, SOLENOID CLICKS

1. Inspect engine and drive belt system for mechanical binding. Repair as necessary. If engine moves freely, go to next step.
2. Check for high resistance in positive battery cable between battery and starter solenoid (Black wire on 3.8L; Red wire on 5.7L). Repair as necessary and retest operation. If positive battery cable checks okay, go to next step.
3. Check for high resistance in ground circuit between battery and starter. Repair as necessary and retest operation. If ground circuit checks okay, go to next step.
4. Check for poor connections at starter solenoid. Repair as necessary and retest operation. If connections to starter solenoid check okay, go to next step.
5. Replace starter. See «STARTER»(ref-8268-S15803113362000081600000) under REMOVAL & INSTALLATION. Retest operation.

PINION CLEARANCE CHECK

Note. Pinion clearance is not adjustable. If clearance is not within specification, replace starter assembly.

1. Secure starter motor in vise with opening in housing accessible for measurement. Disconnect starter field connector from solenoid terminal "M". Insulate starter field connector. Connect battery negative terminal lead to starter frame. Connect 12 volts to starter solenoid terminal "S". Momentarily touch jumper lead from starter solenoid terminal "M" to starter frame, shifting pinion into cranking position. (Scheme 2)
2. Push pinion as far as possible away from retainer. Using a feeler gauge, ensure there is.01-.16" (.25-4.06 mm) clearance between pinion and retainer. (Scheme 3)

Scheme 2

Scheme 3